[go: up one dir, main page]

CN114389696B - Optical module, optical fiber interface connector, optical signal transmission method and system - Google Patents

Optical module, optical fiber interface connector, optical signal transmission method and system Download PDF

Info

Publication number
CN114389696B
CN114389696B CN202011141792.6A CN202011141792A CN114389696B CN 114389696 B CN114389696 B CN 114389696B CN 202011141792 A CN202011141792 A CN 202011141792A CN 114389696 B CN114389696 B CN 114389696B
Authority
CN
China
Prior art keywords
optical
optical signal
mode
optical fiber
module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202011141792.6A
Other languages
Chinese (zh)
Other versions
CN114389696A (en
Inventor
文玥
严晖
张文斗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN202011141792.6A priority Critical patent/CN114389696B/en
Publication of CN114389696A publication Critical patent/CN114389696A/en
Application granted granted Critical
Publication of CN114389696B publication Critical patent/CN114389696B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/40—Transceivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/04—Mode multiplex systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

The application provides an optical module, an optical fiber interface connector, an optical signal transmission method and an optical signal transmission system, and relates to the technical field of communication. The optical fiber can transmit an N-order mode optical signal and an M-order mode optical signal on the first optical fiber, wherein N and M are integers which are larger than or equal to 0, N is different from M, the wavelengths of the N-order mode optical signal and the M-order mode optical signal are the same, and the transmission directions are opposite. Therefore, two optical signals with the same wavelength are transmitted in different order modes in different directions on the same optical fiber, so that single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.

Description

Optical module, optical fiber interface connector, optical signal transmission method and system
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to an optical module, an optical fiber interface connector, and an optical signal transmission method and system.
Background
With the wide application of the internet, the demand of people for data volume is increasing, and the traditional communication technology has hardly met the demand of today's high-speed data volume increase, and the development of optical communication technology just meets the demand. However, due to the influence of noise such as Rayleigh scattering and the like and the reasons of hysteresis and the like of research of erbium-doped fiber amplifiers (Erbium Doped Fiber Application Amplifier, EDFA), the current optical fiber communication system mainly adopts single-fiber unidirectional transmission, so that at least two optical fibers are required to be used for communication between two places, and the transmission cost is increased; furthermore, this also reduces the utilization of fiber resources, since each fiber can only be transported unidirectionally. Therefore, the new transmission technology of single-fiber bidirectional transmission becomes the research focus and difficulty of the current optical transmission system.
Disclosure of Invention
The embodiment of the application provides an optical module, an optical fiber interface connector, an optical signal transmission method and an optical signal transmission system, which can transmit optical signals with the same wavelength in different directions of the same optical fiber, realize single-fiber bidirectional transmission, save engineering cost and improve the utilization rate of optical fiber resources.
In a first aspect, an embodiment of the present application provides an optical module, including:
an emission optical component for providing a first fundamental mode optical signal to the mode division multiplexing component;
the optical fiber module comprises a module division multiplexing component, a first base module and a second base module, wherein the module division multiplexing component is used for transmitting an N-order module optical signal to a first optical fiber, N is an integer larger than or equal to 0, and when N is larger than 0, the module division multiplexing component is also used for converting the first base module optical signal into an N-order module optical signal, and when N is equal to 0, the N-order optical signal is the first base module optical signal;
the module is further configured to receive an M-order mode optical signal from the first optical fiber, M being an integer greater than or equal to 0, wherein when M is greater than 0, the module division multiplexing component is further configured to convert the M-order optical signal into a second fundamental mode optical signal, where when m=0, the M-order optical signal is the second fundamental mode optical signal;
a receiving optical assembly for receiving the second fundamental mode optical signal from the mode division multiplexing assembly;
wherein N is different from M, and the wavelengths of the N-order mode optical signal and the M-order mode optical signal are the same
Therefore, two optical signals which are transmitted in different directions on the same optical fiber and have the same wavelength are subjected to mode conversion through the mode division multiplexing component, so that the two optical signals can be transmitted on the same optical fiber in different order modes, single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
In one possible implementation manner, the number of the mode division multiplexing assemblies is multiple, and each mode division multiplexing assembly is connected with one transmitting optical assembly and one receiving optical assembly, and each mode division multiplexing assembly corresponds to one optical fiber. Therefore, a plurality of optical fibers can be spliced on one optical module, and single-fiber bidirectional transmission can be realized on each optical fiber.
In a second aspect, embodiments of the present application provide a fiber optic interface connector, comprising:
the first end of the first optical fiber lock pin is connected with the mode division multiplexing component, the second end of the first optical fiber lock pin is used for being connected with the emitting optical component, and the emitting optical component is used for providing a first fundamental mode optical signal for the mode division multiplexing component through the first optical fiber lock pin;
the optical fiber module comprises a module division multiplexing component, a first base module and a second base module, wherein the module division multiplexing component is used for transmitting an N-order module optical signal to a first optical fiber, N is an integer larger than or equal to 0, and when N is larger than 0, the module division multiplexing component is also used for converting the first base module optical signal into an N-order module optical signal, and when N is equal to 0, the N-order optical signal is the first base module optical signal;
The module multiplexing component is further used for receiving an M-order mode optical signal from the first optical fiber, M is an integer greater than or equal to 0, and when M is greater than 0, the module multiplexing component is further used for converting the M-order mode optical signal into a second fundamental mode optical signal, wherein when M=0, the M-order optical signal is the second fundamental mode optical signal;
the first end of the second optical fiber lock pin is connected with the mode division multiplexing assembly, the second end of the second optical fiber lock pin is used for being connected with the receiving optical assembly, and the receiving optical assembly is used for receiving a second fundamental mode optical signal from the mode division multiplexing assembly through the second optical fiber lock pin.
Therefore, two optical signals which are transmitted in different directions on the same optical fiber and have the same wavelength are subjected to mode conversion through the mode division multiplexing component, so that the two optical signals can be transmitted on the same optical fiber in different order modes, single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
In one possible implementation, the first fiber stub and the second fiber stub are each connected to the mode division multiplexing assembly by a waveguide chip or patch cord. Thereby, the connection of the optical fiber ferrule and the mode division multiplexing component is realized.
In a third aspect, embodiments of the present application provide an electronic device comprising the optical module provided in the first aspect, or comprising the optical fiber interface connector provided in the second aspect.
In a fourth aspect, an embodiment of the present application provides an optical signal transmission method, including:
and transmitting the N-order mode optical signal and the M-order mode optical signal on the first optical fiber, wherein N and M are integers which are larger than or equal to 0, N is different from M, the wavelengths of the N-order mode optical signal and the M-order mode optical signal are the same, and the transmission directions are opposite. Therefore, two optical signals with the same wavelength are transmitted in different order modes in different directions on the same optical fiber, so that single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
In one possible implementation of the present invention,
transmitting an N-mode optical signal and an M-mode optical signal on a first optical fiber, comprising:
transmitting an N-order mode optical signal in a first direction of a first optical fiber;
an M-mode optical signal is transmitted in a second direction of the first optical fiber. Thereby, an N-order mode optical signal is transmitted in the first direction and an M-order mode optical signal is transmitted in the second direction.
In one possible implementation, the first direction is a downstream direction and the second direction is an upstream direction.
In one possible implementation, the first direction is an uplink direction and the second direction is a downlink direction.
In a fifth aspect, embodiments of the present application provide an optical signal transmission system, including: at least one optical fiber and at least two optical modules provided in the first aspect, the at least one optical fiber comprising a first optical fiber, the at least two optical modules provided in the first aspect comprising a first optical module and a second optical module;
The first end of the first optical fiber is connected with one mode division multiplexing component in the first optical module, and the second end of the first optical fiber is connected with one mode division multiplexing component in the second optical module. Therefore, the optical signal transmission system can transmit two optical signals with the same wavelength in different order modes in different directions on the same optical fiber, so that single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
In a sixth aspect, embodiments of the present application provide an optical signal transmission system, including: at least one optical fiber and at least two optical fiber interface connectors provided in the second aspect, the at least one optical fiber comprising a first optical fiber, the at least two optical fiber interface connectors provided in the second aspect comprising a first optical fiber interface connector and a second optical fiber interface connector;
the first end of the first optical fiber is connected with the mode division multiplexing component in the first optical fiber interface connector, and the second end of the first optical fiber is connected with the mode division multiplexing component in the second optical fiber interface connector. Therefore, the optical signal transmission system can transmit two optical signals with the same wavelength in different order modes in different directions on the same optical fiber, so that single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
In a seventh aspect, embodiments of the present application provide an optical signal transmission system, including: at least one optical fiber, at least one optical module provided in the first aspect, and at least one optical fiber interface connector provided in the second aspect, the at least one optical fiber comprising a first optical fiber, the at least one optical module provided in the first aspect comprising a first optical module, the at least one optical fiber interface connector provided in the second aspect comprising a first optical fiber interface connector;
the first end of the first optical fiber is connected with one mode division multiplexing component in the first optical module, and the second end of the first optical fiber is connected with the mode division multiplexing component of the first optical fiber interface connector. Therefore, the optical signal transmission system can transmit two optical signals with the same wavelength in different order modes in different directions on the same optical fiber, so that single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
In an eighth aspect, an embodiment of the present application provides an optical module, including:
a mode division multiplexing assembly for transmitting a first optical signal on a first optical fiber and receiving a second optical signal;
an optical transmitting assembly for providing a first optical signal to the mode division multiplexing assembly;
The receiving optical assembly is used for receiving the second optical signal sent by the mode division multiplexing assembly;
the first optical signal and the second optical signal have the same wavelength and are transmitted in different order modes on the first optical fiber;
the module division multiplexing component is further configured to convert a transmission mode of the first optical signal before sending the first optical signal, and/or convert a transmission mode of the second optical signal after receiving the second optical signal.
Therefore, the mode conversion is carried out on two optical signals with the same transmission wavelength in different directions on the same optical fiber through the mode division multiplexing component, so that the two optical signals can be transmitted on the same optical fiber in different order modes, single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
In one possible implementation, the module division multiplexing component is further configured to:
converting a first optical signal received from the transmitting optical component from a zero-order mode to a first higher-order mode and transmitting;
and receiving a second optical signal transmitted in a second higher order mode, and converting the second optical signal from the second higher order mode to a zero order mode and transmitting the second optical signal to the receiving optical component, wherein the first higher order mode is different from the second higher order mode. Thereby, transmission of the first optical signal and the second optical signal in different higher order modes is achieved.
In one possible implementation, the module division multiplexing component is further configured to:
transmitting a first optical signal received from the transmitting optical component in a zero order mode;
and receiving the second optical signal transmitted in the third higher-order mode, converting the second optical signal from the third higher-order mode to the zero-order mode, and transmitting the second optical signal to the receiving optical component. Thus, it is realized to transmit the fundamental mode optical signal in the signal upstream direction and transmit the higher-order mode optical signal in the signal downstream direction.
In one possible implementation, the module division multiplexing component is further configured to:
converting a first optical signal received from the transmitting optical component from a zero-order mode to a fourth higher-order mode and transmitting;
the second optical signal transmitted in the zero-order mode is received and transmitted to the receiving optical component. Thereby, it is realized to transmit the high-order mode optical signal in the signal upstream direction and to transmit the fundamental mode optical signal in the signal downstream direction.
In one possible implementation manner, the number of the mode division multiplexing assemblies is multiple, and each mode division multiplexing assembly is connected with one transmitting optical assembly and one receiving optical assembly, and each mode division multiplexing assembly corresponds to one optical fiber. Therefore, a plurality of optical fibers can be spliced on one optical module, and single-fiber bidirectional transmission can be realized on each optical fiber.
In a ninth aspect, embodiments of the present application provide a fiber optic interface connector, including:
a mode division multiplexing assembly for transmitting a first optical signal on a first optical fiber and receiving a second optical signal;
the first optical fiber core insert comprises a first optical fiber core insert, wherein a first end of the first optical fiber core insert is connected with the mode division multiplexing component, a second end of the first optical fiber core insert is used for being connected with the emitting optical component, and the emitting optical component is used for providing a first optical signal for the mode division multiplexing component through the first optical fiber core insert;
the first end of the second optical fiber insert core is connected with the mode division multiplexing component, the second end of the second optical fiber insert core is used for being connected with the receiving optical component, and the receiving optical component is used for receiving a second optical signal sent by the mode division multiplexing component through the second optical fiber insert core;
the first optical signal and the second optical signal have the same wavelength and are transmitted in different order modes on the first optical fiber;
the module division multiplexing component is further configured to convert a transmission mode of the first optical signal before sending the first optical signal, and/or convert a transmission mode of the second optical signal after receiving the second optical signal.
Therefore, the mode conversion is carried out on two optical signals with the same transmission wavelength in different directions on the same optical fiber through the mode division multiplexing component, so that the two optical signals can be transmitted on the same optical fiber in different order modes, single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
In one possible implementation, the module division multiplexing component is further configured to:
converting the first optical signal from a zero-order mode to a first higher-order mode and transmitting the first optical signal;
and receiving a second optical signal transmitted in a second higher order mode, converting the second optical signal from the second higher order mode to a zero order mode, and transmitting the second optical signal to the receiving optical assembly through the second optical fiber ferrule, wherein the first higher order mode is different from the second higher order mode. Thereby, transmission of the first optical signal and the second optical signal in different higher order modes is achieved.
In one possible implementation, the module division multiplexing component is further configured to:
transmitting the first optical signal in a zero-order mode;
and receiving the second optical signal transmitted in the third higher-order mode, converting the second optical signal from the third higher-order mode to the zero-order mode, and transmitting the second optical signal to the receiving optical assembly through the second optical fiber ferrule. Thus, it is realized to transmit the fundamental mode optical signal in the signal upstream direction and transmit the higher-order mode optical signal in the signal downstream direction.
In one possible implementation, the module division multiplexing component is further configured to:
converting the first optical signal from a zero-order mode to a fourth higher-order mode and transmitting the first optical signal;
and receiving a second optical signal sent in the zero-order mode and transmitting the second optical signal to the receiving optical assembly through the second optical fiber ferrule. Thereby, it is realized to transmit the high-order mode optical signal in the signal upstream direction and to transmit the fundamental mode optical signal in the signal downstream direction.
In one possible implementation, the first fiber stub and the second fiber stub are each connected to the mode division multiplexing assembly by a waveguide chip or patch cord. Thereby, the connection of the optical fiber ferrule and the mode division multiplexing component is realized.
In a tenth aspect, embodiments of the present application provide an electronic device comprising the optical module provided in the eighth aspect, or comprising the optical fiber interface connector provided in the ninth aspect.
In an eleventh aspect, an embodiment of the present application provides an optical signal transmission method, including:
the first optical signal and the second optical signal are transmitted on the first optical fiber in different order modes, wherein the wavelength of the first optical signal is the same as that of the second optical signal, and the transmission directions are different. Therefore, two optical signals with the same wavelength are transmitted in different directions on the same optical fiber, so that single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
In one possible implementation, transmitting the first optical signal and the second optical signal in different order modes on the first optical fiber includes:
transmitting a first optical signal in a first higher order mode in a first direction of a first optical fiber;
transmitting a second optical signal in a second higher order mode in a second direction of the first optical fiber;
Wherein the first higher order mode is different from the second higher order mode. Thereby, transmission of the first optical signal and the second optical signal in different higher order modes is achieved.
In one possible implementation, transmitting the first optical signal and the second optical signal in different order modes on the first optical fiber includes:
transmitting a first optical signal in a zero-order mode in a first direction of a first optical fiber;
the second optical signal is transmitted in a third higher order mode in a second direction of the first optical fiber. Thereby, it is achieved that the fundamental mode optical signal is transmitted in a first direction and the higher order mode optical signal is transmitted in a second direction.
In one possible implementation, transmitting the first optical signal and the second optical signal in different order modes on the first optical fiber includes:
transmitting a first optical signal in a fourth higher order mode in a first direction of a first optical fiber;
the second optical signal is transmitted in a zero-order mode in a second direction of the first optical fiber. Thereby, it is achieved that the high order mode optical signal is transmitted in the first direction and the fundamental mode optical signal is transmitted in the second direction.
In one possible implementation, the first direction is a downstream direction and the second direction is an upstream direction.
In one possible implementation, the first direction is an uplink direction and the second direction is a downlink direction.
In a twelfth aspect, embodiments of the present application provide an optical signal transmission system, including: at least one optical fiber and at least two optical modules provided in the eighth aspect, the at least one optical fiber comprising a first optical fiber, the at least two optical modules provided in the ninth aspect comprising a first optical module and a second optical module;
the first end of the first optical fiber is connected with one mode division multiplexing component in the first optical module, and the second end of the first optical fiber is connected with one mode division multiplexing component in the second optical module. Therefore, the optical signal transmission system can transmit two optical signals with the same wavelength in different order modes in different directions on the same optical fiber, so that single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
In a thirteenth aspect, embodiments of the present application provide an optical signal transmission system, including: at least one optical fiber and at least two optical fiber interface connectors provided in the ninth aspect, the at least one optical fiber comprising a first optical fiber, the at least two optical fiber interface connectors provided in the second aspect comprising a first optical fiber interface connector and a second optical fiber interface connector;
The first end of the first optical fiber is connected with the mode division multiplexing component in the first optical fiber interface connector, and the second end of the first optical fiber is connected with the mode division multiplexing component in the second optical fiber interface connector. Therefore, the optical signal transmission system can transmit two optical signals with the same wavelength in different order modes in different directions on the same optical fiber, so that single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
In a fourteenth aspect, an embodiment of the present application provides an optical signal transmission system, including: at least one optical fiber, at least one optical module provided in the eighth aspect, and at least one optical fiber interface connector provided in the ninth aspect, the at least one optical fiber comprising a first optical fiber, the at least one optical module provided in the first aspect comprising a first optical module, the at least one optical fiber interface connector provided in the second aspect comprising a first optical fiber interface connector;
the first end of the first optical fiber is connected with one mode division multiplexing component in the first optical module, and the second end of the first optical fiber is connected with the mode division multiplexing component of the first optical fiber interface connector. Therefore, the optical signal transmission system can transmit two optical signals with the same wavelength in different order modes in different directions on the same optical fiber, so that single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
Drawings
Fig. 1 is a schematic structural diagram of an optical module provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of another optical module according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of another optical module according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of an optical fiber interface connector according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an optical signal transmission system according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an optical signal transmission system according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an optical signal transmission system according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an optical signal transmission system according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an optical signal transmission system according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of an optical signal transmission system according to an embodiment of the present application;
fig. 11 is a schematic structural diagram of another optical signal transmission system according to an embodiment of the present application;
fig. 12 is a schematic structural diagram of another optical signal transmission system according to an embodiment of the present application;
fig. 13 is a schematic structural diagram of yet another optical signal transmission system according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be described below with reference to the accompanying drawings.
In the description of embodiments of the present application, words such as "exemplary," "such as" or "for example," are used to indicate by way of example, illustration, or description. Any embodiment or design described herein as "exemplary," "such as" or "for example" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "such as" or "for example," etc., is intended to present related concepts in a concrete fashion.
In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a alone, B alone, and both A and B. In addition, unless otherwise indicated, the term "plurality" means two or more. For example, a plurality of systems means two or more systems, and a plurality of terminals means two or more terminals.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating an indicated technical feature. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
In general, when implementing single-fiber bidirectional transmission, two optical signals with different wavelengths are transmitted in different directions of the same optical fiber, for example, the wavelength λ is transmitted in the upstream direction 1 The optical signal of (2) has a transmission wavelength lambda in the downstream direction 2 Is provided. However, in this way, two optical signals with different wavelengths need to be simultaneously carried by the single-fiber bidirectional transmission, so that a multiplexer/demultiplexer is required at both transmitting and receiving ends of the optical signals to separate the two optical signals with different wavelengths, so that the wave of the optical signal to be transmitted is input to the multiplexer/demultiplexer to be transmitted into the optical fiber, and the wave of the optical signal output from the optical fiber is received. This necessitates a strict screening of both wavelengths; in addition, lasers of the corresponding wavelength need to be arranged, e.g. 8-way transmission requires 4-way placement of one wavelength In addition, 4 paths are placed to obtain one wavelength, 8 paths are received to obtain one group of wavelengths, and 4 paths are another wavelength, so that the mounting of lasers with different wavelengths is needed twice. Therefore, although the single-fiber bidirectional transmission mode can realize single-fiber bidirectional transmission, the production process and the structural complexity of the corresponding optical module are greatly increased.
In addition, when single-fiber bidirectional transmission is realized, two optical signals with the same wavelength are transmitted in different directions of the same optical fiber, and the two optical signals are converted into a transverse magnetic mode (transverse magnetic mode, TM mode) optical signal and a transverse electric mode (transverse electric mode, TE mode) optical signal by a polarizing beam splitter (Polarization Beam Splitter, PBS); then, the transverse magnetic mode optical signal is transmitted in one direction of the same optical fiber, and the transverse electric mode optical signal is transmitted in the other direction. However, this approach often causes damage to the optical signal, and typically requires damage compensation and decision for the optical signal, such as polarization mode dispersion compensation, frequency offset estimation, and the like.
In order to solve the problems, the optical module, the optical fiber interface connector, the optical signal transmission method and the optical signal transmission system are specially provided in the scheme, so that two optical signals with the same wavelength can be transmitted in different order modes in different directions of the same optical fiber, single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved. These will be described in more detail below.
Fig. 1 is a schematic structural diagram of an optical module according to an embodiment of the present application. As shown in fig. 1, the optical module 100 includes an analog division multiplexing component 11, a transmitting optical component 12, and a receiving optical component 13. Wherein both the transmitting optical component 12 and the receiving optical component 13 are connected to the mode division multiplexing component 11, for example, mounted or integrally coupled. In this solution, the mode division multiplexing component 11 may be a mode multiplexer/demultiplexer, whose function may be mainly mode multiplexing or demultiplexing, and transmitting optical signals to the outside and/or receiving optical signals transmitted from the outside, etc., which may specifically be a directional coupler, for example, a multi-path directional coupler based on-chip waveguides; the transmitting optical component 12 may be a laser, and its function may be primarily to provide a fundamental mode optical signal to the mode division multiplexing component 11, so that the mode division multiplexing component 11 transmits the optical signal on an optical fiber; the optical receiving module 13 may be an optical receiver, and its function may be mainly to receive an optical signal transmitted from the outside and transmitted by the optical module 11, that is, after the optical module 11 receives the optical signal transmitted from the outside, the optical module 11 may transmit the optical signal to the optical receiving module 13.
In this embodiment, the optical signals transmitted to the outside and the optical signals received from the outside by the mode division multiplexing module 11 are transmitted on the same optical fiber, and the two optical signals have the same wavelength and are transmitted in different order modes on the same optical fiber. For convenience of description and convenience of distinction, an optical signal transmitted to the outside by the module 11 will be referred to as a first optical signal, and an optical signal received from the outside by the module 11 will be referred to as a second optical signal. It will be appreciated that in this embodiment, the mode division multiplexing module 11 may convert the transmission mode of the first optical signal before sending the first optical signal, for example, convert the fundamental mode optical signal provided by the transmitting optical module 12 into the higher-order mode optical signal, and/or may convert the transmission mode of the second optical signal after receiving the second optical signal, for example, convert the second optical signal transmitted in the higher-order mode into the fundamental mode optical signal, so that the first optical signal and the second optical signal can be transmitted in the same wavelength and different modes on the same optical fiber.
In this solution, as a possible implementation manner, the mode division multiplexing module 11 may convert the first fundamental mode optical signal received from the emission optical module 12 into a first higher-order mode optical signal and send the first higher-order mode optical signal to the optical fiber; and receiving the second high-order mode optical signal from the optical fiber, converting the second high-order mode optical signal into a fundamental mode optical signal, and transmitting the fundamental mode optical signal to the receiving optical component 13. The mode order of the first higher-order mode optical signal is different from the mode order of the second higher-order mode optical signal, for example, the mode order of the first higher-order mode optical signal may be 1 order, and the mode order of the second higher-order mode optical signal may be 2 order.
As another possible implementation, the mode division multiplexing component 11 may send the first fundamental mode optical signal received from the transmitting optical component 12 directly onto an optical fiber; and receiving the second high-order mode optical signal from the optical fiber, converting the second high-order mode optical signal into a fundamental mode optical signal, and transmitting the fundamental mode optical signal to the receiving optical component 13.
As yet another possible implementation, the mode division multiplexing component 11 may convert the first fundamental mode optical signal received from the emission optical component 12 into a first higher order mode and send it to the optical fiber; and receiving the second fundamental mode optical signal from the optical fiber and transmitting to the receiving optical assembly 13.
That is, in this scheme, the emission optical component 12 may provide the first fundamental mode optical signal to the mode division multiplexing component 11. The module 11 may send an N-order mode optical signal to an optical fiber, where N is an integer greater than or equal to 0, and when N is greater than 0, the module may also convert the first fundamental mode optical signal into an N-order mode optical signal, where N is equal to 0, the N-order optical signal is the first fundamental mode optical signal; and the mode division multiplexing component can receive the M-order mode optical signals from the same optical fiber, M is an integer greater than or equal to 0, and when M is greater than 0, the mode division multiplexing component can also convert the M-order mode optical signals into second fundamental mode optical signals, wherein when M=0, the M-order mode optical signals are the second fundamental mode optical signals, N is different from M, and the wavelengths of the N-order mode optical signals and the M-order mode optical signals are the same. The receiving optical component 13 may receive the second fundamental mode optical signal from the mode division multiplexing component 11.
It will be appreciated that in this embodiment, the mode division multiplexing module 11 may excite the fundamental mode optical signal to obtain an optical signal in a higher order mode. Furthermore, an optical fiber interface may be provided on the optical module 100, and the optical fiber interface may be connected to the mode division multiplexing module 11, so that when an optical fiber is inserted into the optical fiber interface, the mode division multiplexing module 11 may establish a connection with the optical fiber, thereby implementing transmitting an optical signal and/or receiving an optical signal on the optical fiber.
In one example, the mode division multiplexing module 11 may be a Long-period+fiber+grating (LPFG) structure based on parallel placement. The mode division multiplexing module 11 can convert the fundamental mode (LP 01 ) The optical signal is coupled to the cladding mode through the grating; then is coupled to via an inclined gratingThe required higher order modes (LP 11 ) Optical signals, thereby enabling conversion from a fundamental mode optical signal to a higher order mode optical signal. The module division multiplexing unit 11 may also convert the higher order modes (LP 11 ) The optical signal is coupled to the cladding mode via the tilted grating; then coupled to the desired fundamental mode (LP via a grating 01 ) Optical signals, thereby enabling conversion from high-order mode optical signals to fundamental mode optical signals.
In one example, the module may be external to the optical module, in which case the interior of the optical module may include both transmit and receive optical components. In this way, the optical module on the transmitting side and the optical module on the receiving side can be set to have the same structure, and the module multiplexing component on the transmitting side and the module multiplexing component on the receiving side can be distinguished; for example, the mode division multiplexing module on the transmitting side may transmit the first fundamental mode optical signal provided by the transmitting optical module in the optical module on the transmitting side to the mode division multiplexing module on the receiving side, and may receive the second higher-order mode optical signal transmitted by the mode division multiplexing module on the receiving side, where the second higher-order mode optical signal is obtained by converting the second fundamental mode optical signal provided by the transmitting optical module in the optical module on the receiving side by the mode division multiplexing module on the receiving side. It will be appreciated that the module is now external to the optical module and functions in accordance with those described above. When the module division multiplexing assembly is arranged outside the optical module, only the structure of the module division multiplexing assembly is needed to be distinguished in the installation process, the structure of the optical module is not needed to be distinguished, the assembly efficiency of the optical module is improved, and the foolproof device can be effectively prevented.
Next, another optical module provided in an embodiment of the present application is described.
Fig. 2 is a schematic structural diagram of another optical module according to an embodiment of the present application. As shown in fig. 2, the optical module 200 includes a plurality of module division multiplexing components 11, a plurality of transmitting optical components 12, and a plurality of receiving optical components 13. Wherein each of the module division multiplexing modules 11 is connected with a transmitting optical module 12 and a receiving optical module 13. It should be noted that each of the mode division multiplexing assemblies 11 may be connected to an optical fiber, so that the mode division multiplexing assemblies 11 may transmit optical signals and/or receive optical signals on the optical fiber.
It can be appreciated that the working principle and process of the optical module 200 are the same as or similar to those of the optical module 100, and specific reference may be made to the description of the optical module 100, which is not repeated herein.
Next, another optical module provided in an embodiment of the present application is described.
Fig. 3 is a schematic structural diagram of another optical module according to an embodiment of the present application. As shown in fig. 3, the optical module 300 includes one mode division multiplexing component 31, a plurality of transmitting optical components 12, and a plurality of receiving optical components 13. The module 31 has a plurality of communication channels, and each communication channel may correspond to one transmitting optical module 12 and one receiving optical module 13. In one example, the plurality of light emitting modules 12 are arranged in an array on one side of the module 31, and the plurality of light receiving modules 13 are arranged in an array on the other side of the module 31.
It can be appreciated that the working principle and process of the optical module 300 are the same as or similar to those of the optical module 100, and specific reference may be made to the description of the optical module 100, which is not repeated herein.
An optical fiber interface connector provided in an embodiment of the present application is described next.
Fig. 4 is a schematic structural diagram of an optical fiber interface connector according to an embodiment of the present application. As shown in fig. 4, the fiber optic interface connector 400 includes a mode division multiplexing assembly 11, a first fiber ferrule 41, and a second fiber ferrule 42. Wherein the mode division multiplexing module 11 may transmit optical signals and/or receive optical signals on optical fibers connected to the optical fiber connector 400; a first end of the first optical fiber ferrule 41 is connected to the mode division multiplexing assembly 11, and a second end of the first optical fiber ferrule 41 may be used to connect to an optical transmitter assembly in an optical module or other module, which may provide a first fundamental mode optical signal to the mode division multiplexing assembly 11 via the first optical fiber ferrule 41; the first end of the second fiber stub 42 is connected to the module 11, and the second end of the second fiber stub 42 may be used to connect to a receiving optical component in an optical module or other module, which may receive an optical signal sent by the module 11 via the second fiber stub 42. In this scheme, the optical signals transmitted by the mode division multiplexing module 11 and the received optical signals have the same wavelength and are transmitted in different order modes on the same optical fiber. Furthermore, in this solution, the mode division multiplexing component 11 may convert the transmission mode of the optical signal before sending the optical signal, for example, converting the optical signal to be sent from a zero order mode to a higher order mode, and/or may convert the transmission mode of the optical signal after receiving the optical signal, for example, converting the second optical signal received for transmission in the higher order mode to a zero order mode, so that the sent optical signal and the received optical signal can be transmitted in the same wavelength and different order modes on the same optical fiber. In one example, an optical signal transmitted in a zero order mode may be understood as a fundamental mode optical signal.
In this solution, as a possible implementation manner, the mode division multiplexing module 11 may convert the first fundamental mode optical signal provided by the emission optical module into a first higher-order mode optical signal and send the first higher-order mode optical signal to the optical fiber; and receiving the second higher-order mode optical signal from the optical fiber, converting the second higher-order mode optical signal into a fundamental-mode optical signal, and transmitting the fundamental-mode optical signal to the receiving optical component via the second optical fiber ferrule 42. The mode order of the first higher-order mode optical signal is different from the mode order of the second higher-order mode optical signal, for example, the mode order of the first higher-order mode optical signal may be 1 order, and the mode order of the second higher-order mode optical signal may be 2 order.
As another possible implementation, the mode division multiplexing component 11 may send the first fundamental mode optical signal directly onto an optical fiber; and receiving a second higher-order mode optical signal from the optical fiber and converting the second higher-order mode optical signal to a fundamental-mode optical signal, which is then transmitted to a receiving optical component via a second fiber stub 42.
As yet another possible implementation, the mode division multiplexing component 11 may convert the first fundamental mode optical signal into a first higher order mode optical signal and send the first higher order mode optical signal to the optical fiber; and receives a second fundamental mode optical signal from the optical fiber and transmits it to the receiving optical component via a second fiber stub 42. It will be appreciated that in this embodiment, the mode division multiplexing module 11 may excite the fundamental mode optical signal to obtain a higher order mode optical signal. Furthermore, the mode division multiplexing component in this solution is the same as or similar to the mode division multiplexing component introduced in the optical module above, and reference may be made in particular to the above description.
In one example, the first fiber stub 41 and the second fiber stub 42 may each be connected to the mode division multiplexing assembly 11 by a waveguide chip or patch cord.
Based on the optical module or the optical fiber interface connector in the foregoing embodiment, the embodiment of the present application further provides an electronic device, where the electronic device includes any one of the optical modules provided in the foregoing embodiment, or includes the optical fiber interface connector provided in the foregoing embodiment.
Next, an optical signal transmission method provided in the embodiments of the present application will be described.
In the scheme, the optical signal transmission method mainly comprises the following steps: the first optical signal and the second optical signal are transmitted on the first optical fiber in different order modes, wherein the wavelength of the first optical signal is the same as that of the second optical signal, and the transmission directions are different. In other words, the method is to transmit two optical signals with the same wavelength but different transmission directions in different order modes on the same optical fiber. The transmission direction may include an uplink direction and a downlink direction. When transmitting optical signals, the first optical signals can be transmitted in the uplink direction, and the second optical signals can be transmitted in the downlink direction; alternatively, the second optical signal may be transmitted in the upstream direction and the first optical signal may be transmitted in the downstream direction. In one example, the first optical signal may include a first fundamental mode optical signal or a first higher order mode optical signal, and the second optical signal may include a second fundamental mode optical signal or a second higher order mode optical signal.
In this solution, as a possible implementation manner, a first higher-order mode optical signal may be transmitted in a first direction of the first optical fiber; and transmitting a second higher-order mode optical signal in a second direction of the first optical fiber. The first higher-order mode optical signal has an analog order different from that of the second higher-order mode optical signal, for example, the first higher-order mode optical signal may have an analog order of 1, and the second higher-order mode optical signal may have an analog order of 2.
As another possible implementation, the first fundamental mode optical signal may be transmitted in a first direction of the first optical fiber; and transmitting a second higher-order mode optical signal in a second direction of the first optical fiber.
As yet another possible implementation, the first higher-order mode optical signal may be transmitted in a first direction of the first optical fiber; and transmitting a second fundamental mode optical signal in a second direction of the first optical fiber.
That is, the optical signal transmission method in this scheme mainly includes: and transmitting the N-order mode optical signal and the M-order mode optical signal on the first optical fiber, wherein N and M are integers which are larger than or equal to 0, N is different from M, the wavelengths of the N-order mode optical signal and the M-order mode optical signal are the same, and the transmission directions are opposite. In one example, an N-mode optical signal may be transmitted in one direction of the first optical fiber (e.g., an upstream or downstream direction) and an M-mode optical signal may be transmitted in the other direction of the first optical fiber (e.g., a downstream or upstream direction).
An optical signal transmission system provided in an embodiment of the present application is described next.
Fig. 5 is a schematic structural diagram of an optical signal transmission system according to an embodiment of the present application. As shown in fig. 5, the optical signal transmission system may include: at least one optical fiber and at least two optical modules as described above. Wherein at least one optical fiber may comprise an optical fiber 51 and at least two of the above described optical modules may comprise an optical module 52 and an optical module 53. One end of the optical fiber 51 may be connected to one of the mode division multiplexing assemblies 521 in the optical module 52, and the other end of the optical fiber 51 may be connected to one of the mode division multiplexing assemblies 531 in the optical module 53.
In one example, as shown in fig. 6, the optical signal transmission system includes two optical modules, that is, a transmission side optical module and a reception side optical module in the drawing, where Tx and Tx 'denote transmission optical components, and Rx' denote reception optical components. Each optical module comprises 8 mode division multiplexing assemblies, and each mode division multiplexing assembly is connected with a transmitting optical assembly, a receiving optical assembly and an optical fiber. Illustratively, the areas where Tx1 and Rx2, tx3 and Rx4, tx5 and Rx6, tx7 and Rx8 are located in the transmission-side light module, and the area opposite to the area in the reception-side light module constitute a first transmission area; the areas where Tx2 and Rx1, tx4 and Rx3, tx6 and Rx5, tx8 and Rx7 are located in the transmission-side light module, and the area opposite to the areas in the reception-side light module constitute a second transmission area. In the first transmission area, each uplink channel can transmit a fundamental mode optical signal, and each downlink channel can transmit a high-order mode optical signal; in the second transmission region, each uplink channel may transmit a high-order mode optical signal, and each downlink channel may transmit a fundamental mode optical signal.
In one example, as shown in fig. 7, the optical signal transmission system includes two optical modules of external mode division multiplexing components, namely, a transmission side optical module and a reception side optical module in the figure. Wherein, each pair of the light receiving and transmitting components in the light module corresponds to one external mode division multiplexing component, tx and Tx 'in the figure represent the light transmitting components, and Rx' represent the light receiving components. Each external mode division multiplexing component is connected with an optical fiber, wherein, a pair of light receiving and transmitting components comprises a light emitting component and a light receiving component.
In one example, as shown in fig. 8, the optical signal transmission system includes an optical module with an external mode division multiplexing component (i.e., a transmission side optical module) and an optical module with an internal mode division multiplexing component (i.e., a reception side optical module), where Tx and Tx 'represent transmission optical components and Rx' represent reception optical components. Each external mode division multiplexing component is connected with an optical fiber, and each pair of the light receiving and transmitting components comprises a light emitting component and a light receiving component.
In one example, as shown in fig. 9, the optical signal transmission system includes an optical module with an internal mode division multiplexing component (i.e., a transmission side optical module) and an optical module with an external mode division multiplexing component (i.e., a reception side optical module), where Tx and Tx 'represent transmission optical components and Rx' represent reception optical components. Each external mode division multiplexing component is connected with an optical fiber, and each pair of the light receiving and transmitting components comprises an emitting light component and a receiving light component.
In one example, as shown in fig. 10, the optical signal transmission system includes two optical modules, each of which includes one mode division multiplexing component, 8 transmitting optical components, and 8 receiving optical components, where Tx represents the transmitting optical component, and Rx represents the receiving optical component. In the optical signal transmission system, each of the mode division multiplexing assemblies is provided with a plurality of communication channels, and each communication channel can correspond to one transmitting optical assembly, one receiving optical assembly and one optical fiber.
It will be appreciated that in this embodiment, for an optical fiber, one end may be connected to one module (e.g., the module on the transmit side) and the other end may be connected to another module (e.g., the module on the receive side).
For ease of understanding, the operation of the optical signal transmission system will be briefly described with reference to fig. 5.
In the optical signal transmission system, the module division multiplexing component 521 in the optical module 52 can provide the wavelength λ to the transmitting optical component 522 1 Is based on the fundamental mode (LP) 01 ) Conversion of optical signals into higher order modes (LP 11 ) An optical signal. And then transmitted to the optical module 53 through the optical fiber 51. Higher order modes (LP) 11 ) When the optical signal reaches the optical module 53, the optical signal first enters the mode division multiplexing component 531; the mode division multiplexing component 531 then divides the higher order modes (LP 11 ) Conversion of optical signals into fundamental mode (LP) 01 ) The optical signal is transmitted to the receiving optical component 533. And finally received by the receiving optical component 533.
In addition, the mode division multiplexing component 531 in the optical module 53 can provide the wavelength λ to the emission optical component 532 1 Is based on the fundamental mode (LP) 01 ) The optical signal is transmitted to the optical module 52 through the optical fiber 51. Base mould (LP) 01 ) When the optical signal reaches the optical module 52, it first enters the module division multiplexing component 521; the mode division multiplexing component 521 then divides the fundamental mode (LP 01 ) The optical signal is transmitted to the receiving optical component 523. And finally received by the receiving optical component 523. Thereby realizing that two kinds of optical fibers with the same transmission wavelength in different directions and different order modes on the same optical fiberThe optical signal realizes single-fiber bidirectional transmission, saves engineering cost and improves the utilization ratio of optical fiber resources.
Next, another optical signal transmission system provided in an embodiment of the present application will be described.
Fig. 11 is a schematic structural diagram of another optical signal transmission system according to an embodiment of the present application. As shown in fig. 11, the optical signal transmission system may include: at least one optical fiber and at least two optical fiber interface connectors as described above. Wherein at least one optical fiber may comprise an optical fiber 61 and at least two of the above-described optical fiber interface connectors may comprise an optical fiber interface connector 62 and an optical fiber interface connector 63. One end of the optical fiber 61 may be connected to a mode division multiplexing component 622 in the optical fiber interface connector 62, and the other end of the optical fiber 61 may be connected to a mode division multiplexing component 632 in the optical fiber interface connector 63.
In the optical signal transmission system, the optical fiber ferrule in the optical fiber interface connector may be connected to an optical module having a transmitting optical component and a receiving optical component. Specifically, with continued reference to fig. 11, the fiber stub 621 may be connected with a transmitting optical component 641 in the optical module 64, and the fiber stub 623 may be connected with a receiving optical component 642 in the optical module 64; the fiber ferrule 631 may be connected to a transmitting optical component 651 in the optical module 65, and the fiber ferrule 633 may be connected to a receiving optical component 652 in the optical module 65.
In one example, as shown in fig. 12, the connection diagram of the transmission-side optical fiber interface connector and the reception-side optical fiber interface connector is shown. The mode division multiplexing component in the optical fiber interface connector at the transmitting side is positioned in the optical fiber interface connector at the transmitting side, the optical fiber insert core 91 can be connected with the transmitting optical component of one optical module, and the optical fiber insert core 92 can be connected with the receiving optical component of one optical module; the module in the receiving-side optical fiber interface connector is located inside the receiving-side optical fiber interface connector, the optical fiber ferrule 93 may be connected to the transmitting optical module of another optical module, and the optical fiber ferrule 94 may be connected to the receiving optical module of another optical module. In addition, the mode division multiplexing component in the transmitting side optical interface connector and the mode division multiplexing component in the receiving side optical interface connector are connected through an optical fiber.
For ease of understanding, the operation of the optical signal transmission system will be briefly described below with reference to fig. 11.
In the optical signal transmission system, the wavelength lambda provided by the transmitting optical assembly 641 in the optical module 64 1 Is based on the fundamental mode (LP) 01 ) The optical signals enter the mode division multiplexing module 622 through the fiber stub 621 in the fiber optic interface connector 62. The mode division multiplexing component 622 can then divide the fundamental mode (LP 01 ) Conversion of optical signals into higher order modes (LP 11 ) An optical signal. And then transmitted through the optical fiber 61 to the mode division multiplexing component 632 in the fiber optic interface connector 63. The mode division multiplexing component 632 couples the higher order modes (LP 11 ) Conversion of optical signals into fundamental mode (LP) 01 ) The optical signal is transmitted via the fiber ferrule 633 in the fiber optic interface connector 63 to the receiving optical component 652 in the optical module 65. And finally received by the receive optical component 652.
In addition, the light emitting component 651 in the light module 65 provides a wavelength λ 1 Is based on the fundamental mode (LP) 01 ) The optical signal enters the mode division multiplexing assembly 632 via the fiber ferrule 631 in the fiber optic interface connector 63. The mode division multiplexing component 632 can then divide the fundamental mode (LP 01 ) The optical signals are transmitted to a mode division multiplexing component 622 in the fiber optic interface connector 62. The mode division multiplexing component 622 then passes the fundamental mode (LP 01 ) The optical signal is transmitted to a receiving optical component 642 in the optical module 64. And finally received by the receiving optical component 642. Therefore, two optical signals with the same wavelength are transmitted in different order modes in different directions on the same optical fiber, so that single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
Next, another optical signal transmission system provided in an embodiment of the present application will be described.
Fig. 13 is a schematic structural diagram of yet another optical signal transmission system according to an embodiment of the present application. As shown in fig. 13, the optical signal transmission system may include: at least one optical fiber, at least one optical module as described above, and at least one optical fiber interface connector as described above. Wherein at least one optical fiber may comprise an optical fiber 71, at least one optical module as described above may comprise an optical module 72, and at least one optical fiber interface connector as described above may comprise an optical fiber interface connector 73. One end of the optical fiber 71 may be connected to one of the mode division multiplexing assemblies 721 in the optical module 72 and the other end of the optical fiber 71 may be connected to the mode division multiplexing assembly 732 of the optical fiber interface connector 73.
In the optical signal transmission system, the optical fiber ferrule in the optical fiber interface connector may be connected to an optical module having a transmitting optical component and a receiving optical component. Specifically, with continued reference to fig. 13, the fiber stub 731 may be connected to the transmitting optical component 741 in the optical module 74, and the fiber stub 733 may be connected to the receiving optical component 742 in the optical module 74.
For ease of understanding, the operation of the optical signal transmission system will be briefly described below with reference to fig. 13 by way of example.
In the optical signal transmission system, the mode division multiplexing component 721 in the optical module 72 can provide the wavelength λ to the transmitting optical component 722 1 Is based on the fundamental mode (LP) 01 ) Conversion of optical signals into higher order modes (LP 11 ) An optical signal. And then transmitted through the optical fiber 51 to the optical fiber interface connector 73. Higher order modes (LP) 11 ) When the optical signal reaches the fiber interface connector 73, it first enters the mode division multiplexing module 732; the mode division multiplexing component 732 then divides the higher order modes (LP 11 ) Conversion of optical signals into fundamental mode (LP) 01 ) The optical signal is transmitted to the receiving optical component 742 in the optical module 74 via the fiber stub 733. And finally received by the receiving optical component 742.
In addition, the wavelength lambda provided by the transmitting optical component 741 in the optical module 74 1 Is based on the fundamental mode (LP) 01 ) The optical signal enters the mode division multiplexing assembly 732 via the fiber ferrule 731 in the fiber optic interface connector 73. The mode division multiplexing component 732 may then divide the fundamental mode (LP 01 ) The optical signal is transmitted to the optical module 72 through the optical fiber 71. Base mould (LP) 01 ) When the optical signal reaches the optical module 72, it first enters the mode division multiplexing component 721. The mode division multiplexing component 721 then divides the fundamental mode (LP 01 ) The optical signal is transmitted to the receiving optical component 723. And finally received by the receiving optical component 723. Thereby realizing different parties on the same optical fiber Two optical signals with the same wavelength are transmitted in different order modes, so that single-fiber bidirectional transmission is realized, engineering cost is saved, and the utilization rate of optical fiber resources is improved.
In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.
It will be appreciated that: the above embodiments are only for illustrating the technical solution of the present application, but are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
The foregoing is merely specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present disclosure, and all changes and substitutions are intended to be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (12)

1. An optical module, comprising:
an emission optical component for providing a first fundamental mode optical signal to the mode division multiplexing component;
the module is configured to send an N-order mode optical signal to a first optical fiber, where N is an integer greater than or equal to 0, where when N is greater than 0, the module is further configured to convert the first fundamental mode optical signal into the N-order mode optical signal, and when N is equal to 0, the N-order optical signal is the first fundamental mode optical signal;
the module is further configured to receive an M-order mode optical signal from the first optical fiber, where M is an integer greater than or equal to 0, where when M is greater than 0, the module is further configured to convert the M-order mode optical signal into a second fundamental mode optical signal, and when m=0, the M-order optical signal is the second fundamental mode optical signal;
a receiving optical assembly for receiving the second fundamental mode optical signal from the mode division multiplexing assembly;
wherein N is different from M, and the wavelengths of the N-order mode optical signal and the M-order mode optical signal are the same.
2. The optical module of claim 1, wherein a plurality of the module division multiplexing assemblies are provided, each module division multiplexing assembly is connected to one of the transmitting optical assembly and one of the receiving optical assembly, and each module division multiplexing assembly corresponds to one optical fiber.
3. An optical fiber interface connector, comprising
The first optical fiber core insert comprises a first optical fiber core insert, wherein a first end of the first optical fiber core insert is connected with a mode division multiplexing component, a second end of the first optical fiber core insert is used for being connected with an emitting optical component, and the emitting optical component is used for providing a first basic mode optical signal for the mode division multiplexing component through the first optical fiber core insert;
the module is configured to send an N-order mode optical signal to a first optical fiber, where N is an integer greater than or equal to 0, where when N is greater than 0, the module is further configured to convert the first fundamental mode optical signal into the N-order mode optical signal, and when N is equal to 0, the N-order optical signal is the first fundamental mode optical signal;
the module is further configured to receive an M-order mode optical signal from the first optical fiber, where M is an integer greater than or equal to 0, where when M is greater than 0, the module is further configured to convert the M-order mode optical signal into a second fundamental mode optical signal, and when m=0, the M-order optical signal is the second fundamental mode optical signal;
the first end of the second optical fiber lock pin is connected with the mode division multiplexing component, the second end of the second optical fiber lock pin is used for being connected with a receiving optical component, and the receiving optical component is used for receiving the second fundamental mode optical signal from the mode division multiplexing component through the second optical fiber lock pin.
4. The fiber optic interface connector according to claim 3, wherein the first and second fiber optic ferrules are each connected to the mode division multiplexing assembly by a waveguide chip or jumper wire.
5. An electronic device comprising an optical module as claimed in claim 1 or 2 or comprising a fibre optic interface connector as claimed in claim 3 or 4.
6. An optical signal transmission method, characterized in that an optical module as claimed in claim 1 or 2 is used, comprising:
and transmitting an N-order mode optical signal and an M-order mode optical signal on the first optical fiber, wherein N and M are integers which are larger than or equal to 0, N is different from M, the wavelengths of the N-order mode optical signal and the M-order mode optical signal are the same, and the transmission directions are opposite.
7. The method of claim 6, wherein transmitting the N-mode optical signal and the M-mode optical signal over the first optical fiber comprises:
transmitting the N-order mode optical signal in a first direction of the first optical fiber;
and transmitting the M-order mode optical signal in a second direction of the first optical fiber.
8. The method of claim 7, wherein the first direction is a downstream direction and the second direction is an upstream direction.
9. The method of claim 7, wherein the first direction is an upstream direction and the second direction is a downstream direction.
10. An optical signal transmission system, comprising: at least one optical fiber comprising a first optical fiber and at least two optical modules according to claim 1 or 2 comprising a first optical module and a second optical module;
the first end of the first optical fiber is connected with one mode division multiplexing component in the first optical module, and the second end of the first optical fiber is connected with one mode division multiplexing component in the second optical module.
11. An optical signal transmission system, comprising: at least one optical fiber comprising a first optical fiber and at least two optical fiber interface connectors according to claim 3 or 4 comprising a first optical fiber interface connector and a second optical fiber interface connector according to claim 3 or 4;
the first end of the first optical fiber is connected with the mode division multiplexing component in the first optical fiber interface connector, and the second end of the first optical fiber is connected with the mode division multiplexing component in the second optical fiber interface connector.
12. An optical signal transmission system, comprising: at least one optical fiber comprising a first optical fiber, at least one optical module according to claim 1 or 2 comprising a first optical module, and at least one optical fiber interface connector according to claim 3 or 4 comprising a first optical fiber interface connector;
the first end of the first optical fiber is connected with one mode division multiplexing component in the first optical module, and the second end of the first optical fiber is connected with the mode division multiplexing component of the first optical fiber interface connector.
CN202011141792.6A 2020-10-22 2020-10-22 Optical module, optical fiber interface connector, optical signal transmission method and system Active CN114389696B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011141792.6A CN114389696B (en) 2020-10-22 2020-10-22 Optical module, optical fiber interface connector, optical signal transmission method and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011141792.6A CN114389696B (en) 2020-10-22 2020-10-22 Optical module, optical fiber interface connector, optical signal transmission method and system

Publications (2)

Publication Number Publication Date
CN114389696A CN114389696A (en) 2022-04-22
CN114389696B true CN114389696B (en) 2024-04-12

Family

ID=81194991

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011141792.6A Active CN114389696B (en) 2020-10-22 2020-10-22 Optical module, optical fiber interface connector, optical signal transmission method and system

Country Status (1)

Country Link
CN (1) CN114389696B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1914836A (en) * 2004-08-05 2007-02-14 松下电器产业株式会社 Multimode optical transmission system and multimode optical transmission method
CN102971974A (en) * 2012-03-07 2013-03-13 华为技术有限公司 Single-fiber bi-directional optical module and passive optical network system
CN103152099A (en) * 2013-01-31 2013-06-12 华中科技大学 Single-fiber bidirectional transmission system based on mode division multiplexing
WO2016206027A1 (en) * 2015-06-24 2016-12-29 华为技术有限公司 Optical device and optical module
CN108551367A (en) * 2018-02-28 2018-09-18 北京邮电大学 A kind of Transmission system and method based on mode division multiplexing
CN108964769A (en) * 2017-05-22 2018-12-07 中兴通讯股份有限公司 A kind of mode division multiplexing transmission method, sending device and receiving device
CN109581597A (en) * 2019-01-30 2019-04-05 宇捷光子科技(南京)有限公司 A kind of Wave division multiplexing optical transmission system of simplex optical module composition

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1914836A (en) * 2004-08-05 2007-02-14 松下电器产业株式会社 Multimode optical transmission system and multimode optical transmission method
CN102971974A (en) * 2012-03-07 2013-03-13 华为技术有限公司 Single-fiber bi-directional optical module and passive optical network system
CN103152099A (en) * 2013-01-31 2013-06-12 华中科技大学 Single-fiber bidirectional transmission system based on mode division multiplexing
WO2016206027A1 (en) * 2015-06-24 2016-12-29 华为技术有限公司 Optical device and optical module
CN108964769A (en) * 2017-05-22 2018-12-07 中兴通讯股份有限公司 A kind of mode division multiplexing transmission method, sending device and receiving device
CN108551367A (en) * 2018-02-28 2018-09-18 北京邮电大学 A kind of Transmission system and method based on mode division multiplexing
CN109581597A (en) * 2019-01-30 2019-04-05 宇捷光子科技(南京)有限公司 A kind of Wave division multiplexing optical transmission system of simplex optical module composition

Also Published As

Publication number Publication date
CN114389696A (en) 2022-04-22

Similar Documents

Publication Publication Date Title
CN1886564B (en) Multi-wavelength, bi-directional optical multiplexer
CN107544112B (en) Optical fiber optical system, data communication system and method for installing optical mixer
CN114545564B (en) Optical module
Beppu et al. 56-Gbaud PAM4 transmission over 2-km 125-μm-cladding 4-core multicore fibre for data centre communications
US8055130B2 (en) Optical transceiver amplifier
EP3696997A1 (en) Symmetrical supervisory optical circuit for a bidirectional optical repeater
US9016959B2 (en) Opto-electronic module with patchcords
Wada et al. High-efficiency and long-distance power-over-fibre transmission using a 125-μm cladding diameter 4-core fibre
CN110768743B (en) Optical module
CN114389696B (en) Optical module, optical fiber interface connector, optical signal transmission method and system
CN107800486A (en) The compatible pluggable CSFP optical modules of binary channels compact of electrical interface
Kurokawa et al. Stimulated Raman scattering and power-over-fiber property of multi-core fiber
Arikawa et al. Crosstalk reduction using bidirectional signal assignment over square lattice structure 16-core fiber for gradual upgrade of SSMF-based lines
Meseguer et al. Multi-core vs hollow-core fibers: Technical study of their viability in SDM power-constraint submarine systems
CN206224024U (en) A kind of optical module
CN210835348U (en) Single-fiber bidirectional transmission optical module
EP2390697A1 (en) Connection device for optical fibers
Ohtsuka et al. Optical amplifiers using multicore erbium doped optical fibers
WO2021241247A1 (en) Optical transceiver
CN114793136B (en) A 5G micro base station full-duplex communication system based on optical signal energy simultaneous interpretation
US20200186274A1 (en) Optical duplexer and optical transceiving system
JP2017073669A (en) Active optical cable
CN101158732A (en) Light transmit-receive integrated module self-cycle realizing device
CN217718173U (en) PON + CATV fused PWDM three-way receiving and transmitting optical assembly
CN113885141A (en) Optical module

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant