CN113014326A - Optical transceiver module, optical network terminal and communication system - Google Patents
Optical transceiver module, optical network terminal and communication system Download PDFInfo
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- 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
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- H—ELECTRICITY
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- 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
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Abstract
The embodiment of the invention provides an optical transceiver module, an optical network terminal and a communication system, wherein a third port of a circulator is sequentially connected with an optical receiving component and a connector of the optical transceiver module; through the first port of the circulator, a first optical signal generated by the optical transmitting component based on a first electric signal from the connector can be received and sent to the opposite communication end through the second port, a second optical signal of the opposite communication end is received through the second port of the circulator and converted into a second electric signal through the optical transmitting component and sent to the connector, single-fiber bidirectional transmission is achieved, and the circulator supports the same wavelength in the transmitting direction and the receiving direction, so that the optical receiving and transmitting module provides a foundation for receiving and transmitting the optical signal by adopting the same wavelength, the received and transmitted signals share one optical fiber, the cost of optical fiber resources can be effectively saved, meanwhile, the wavelength in the receiving and transmitting direction adopts the same wavelength band, and the complexity and cost of networking, control and maintenance are greatly reduced.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to an optical transceiver module, an optical network terminal, and a communication system.
Background
The 5G technology is about to enter the commercialization process, the optical module is a basic constituent unit of a 5G network physical layer, the optical module is widely applied to wireless and transmission equipment, the cost of the optical module accounts for a high percentage in system equipment, part of the equipment can reach 70%, based on the requirements of low cost and wide coverage, the 5G fronthaul puts higher requirements on the optical module, and the requirements of a novel optical module with higher speed, longer distance, wider temperature and lower cost are urgent.
In the related fronthaul Network, a single-fiber bidirectional transmission mode of 10Gb/s, 25Gb/s NRZ or 50G PAM4 is adopted, and in the related fronthaul Network, when a single-fiber bidirectional transmission mode is adopted between an AAU (Active Antenna Unit) and a DU (distribution Unit), a dielectric thin film filter TFF is adopted by Optical transceiver modules on ONTs (Optical Network terminal) of the AAU and the DU (distribution Unit), which requires that Optical signals in a transmitting direction and Optical signals in a receiving direction on Optical lines must adopt different wavelengths, resulting in high complexity and high cost of networking, control and maintenance.
In addition, in a related fronthaul network, a single-fiber bidirectional transmission mode of 10Gb/s, 25Gb/s NRZ or 50G PAM4 is adopted, so that the bandwidth requirement of a high-frequency station after 5G large-scale deployment is difficult to meet.
Disclosure of Invention
The embodiment of the invention provides an optical transceiver module, an optical network terminal and a communication system, which solve the problems of high complexity and high cost of networking, control and maintenance caused by the fact that optical signals in a sending direction and optical signals in a receiving direction must adopt different wavelengths when single-fiber bidirectional transmission is adopted in the related technology.
To solve the above technical problem, an embodiment of the present invention provides an optical transceiver module, including: the optical transmitter comprises a connector, a signal driver, an optical transmitting assembly, an optical receiving assembly and a circulator;
the connector, the signal driver and the light transmitting assembly are sequentially connected, and the output end of the light transmitting assembly is connected with the first port of the circulator; the second port of the circulator is connected with a communication opposite end; the third port of the circulator, the light receiving component and the connector are connected in sequence;
the connector is used for sending a first electric signal to be sent out to the signal driver; the signal driver carries out signal shaping and amplification processing on the received first electric signal and then sends the first electric signal to the optical sending component; the optical sending component converts a received first electrical signal into a first optical signal and sends the first optical signal to a first port, and the first port sends the first optical signal to the opposite communication terminal through the second port;
the second port sends a second optical signal received from the opposite communication terminal to the optical receiving assembly through the third port, and the optical receiving assembly converts the received second optical signal into a second electrical signal and sends the second electrical signal to the connector.
In order to solve the above technical problem, an embodiment of the present invention further provides an optical network terminal, including a board and the optical transceiver module as described above, where the board is connected to a connector of the optical transceiver module, and is configured to send a first electrical signal to the connector or receive a second electrical signal from the connector.
In order to solve the above technical problem, an embodiment of the present invention further provides a communication system, including an active antenna unit and a distribution unit, where the active antenna unit and the distribution unit respectively include a first optical network terminal and a second optical network terminal, both the first optical network terminal and the second optical network terminal include the above optical transceiver module, and a circulator of the optical transceiver module of the first optical network terminal is in communication connection with a circulator of the optical transceiver module of the second optical network terminal.
Advantageous effects
According to the optical transceiver module, the optical network terminal and the communication system provided by the embodiment of the invention, a connector, a signal driver and an optical transmitting assembly of the optical transceiver module are sequentially connected, and the output end of the optical transmitting assembly is connected with the first port of the circulator; the second port of the circulator is connected with a communication opposite end; the third port of the circulator is sequentially connected with the light receiving component of the light receiving and transmitting module and the connector; the first port of the circulator can receive a first optical signal generated by the optical transmitting component based on a first electric signal from the connector and send the first optical signal to the opposite communication end through the second port, and the second port of the circulator receives a second optical signal of the opposite communication end and converts the second optical signal into a second electric signal through the optical transmitting component and sends the second electric signal to the connector, so that single-fiber bidirectional transmission is realized, the circulator does not limit the wavelength adopted by the optical signal in the transmission of the optical signal, and can support the same wavelength in the transmitting direction and the receiving direction, so that the optical transmitting and receiving module provides a basis for receiving and sending the optical signal by adopting the same wavelength, the transmitting and receiving signals share one optical fiber, the cost of optical fiber resources can be effectively saved, and meanwhile, the wavelength in the transmitting and receiving direction adopts the same waveband, compared with the mode that single-fiber bidirectional receiving and sending adopt different wavebands in related fronthaul networks, the networking mode that single-fiber bidirectional receiving and, Complexity and cost of control and maintenance.
Further, the optical transceiver module, the optical network terminal, and the communication system provided in the embodiment of the present invention may convert 8 non-return-to-zero NRZ signals with a bit rate of 25G in the transmission direction into 4 pulse 4 level modulated PAM4 signals with a bit rate of 50G in 4 paths based on a PAM4 technique, and then convert the 4 pulse NRZ signals into corresponding 4 paths of optical signals to be transmitted via the optical transmission assembly, and convert 4 paths of corresponding PAM4 signals with a bit rate of 50G obtained by converting the 4 paths of optical signals in the reception direction into 8 paths of NRZ signals with a bit rate of 25G to be transmitted to the connector, thereby implementing transmission with a baud rate of 200G using the optical transmission assembly and the optical reception assembly with a baud rate of 100G; the bandwidth of 200G not only meets the requirement of 5G high-frequency sites for a large number of AAU aggregation networking, but also greatly saves the cost of optical components.
Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a first schematic structural diagram of an optical transceiver module according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an optical transceiver module according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a light transmitting assembly according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a light receiving device according to a first embodiment of the present invention;
fig. 5 is a schematic structural diagram of an optical network terminal according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of a communication system according to a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of an optical transceiver module according to a second embodiment of the present invention;
fig. 8 is a schematic view of a 4-channel structure according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
aiming at the problems that the optical transceiver modules on the ONTs in the related fronthaul network have to adopt different wavelengths for the optical signals in the transmitting direction and the receiving direction on the light, which causes high complexity and high cost of networking, control and maintenance, and in the related forward network, the problem that the bandwidth requirement of a high-frequency site after 5G large-scale deployment is difficult to meet by adopting a single-fiber bidirectional transmission mode of 10Gb/s, 25Gb/s NRZ or 50G PAM4 is solved, the embodiment provides an optical transceiver module with a new structure, provides a foundation for receiving and transmitting optical signals by adopting the same wavelength, can effectively save the cost of optical fiber resources, meanwhile, the wavelength in the receiving and transmitting direction can adopt the same waveband, and compared with a mode that single-fiber bidirectional receiving and transmitting adopted in a related fronthaul network adopt different wavebands, the complexity and cost of networking, control and maintenance are greatly reduced.
For ease of understanding, the present embodiment is described below with reference to the optical transceiver module shown in fig. 1 as an example, and the optical transceiver module may be applied to, but is not limited to, various optical network terminals. Please refer to fig. 1, which includes: a connector 1, a signal driver 2, a light transmitting module 3, a light receiving module 4, and a circulator 5; wherein:
the connector 1, the signal driver 2 and the light transmitting component 3 are sequentially connected, and the output end of the light transmitting component 3 is connected with the first port of the circulator 5; the second port of the circulator 5 is connected with a communication opposite end; the third port of the circulator 5, the light receiving component 4 and the connector 1 are connected in sequence; that is, in this embodiment, the second port of the circulator 5 is used as an external transmitting/receiving common port, the signal input from the first port is output from the second port, and the signal input from the second port is output from the third port. In addition, it should be understood that the specific type of the Circulator in this embodiment may be flexibly selected according to the requirement, as long as the signal forwarding path described above can be implemented; based on the optical transceiver module shown in fig. 1, the signal transmission and reception process is as follows:
for the signal transmission direction: the connector 1 acquires a first electric signal to be sent out (the connector can acquire the first electric signal to be sent to a communication opposite terminal from a single board or other places connected with the connector), and sends the acquired first electric signal to be sent out to the signal driver 2; the signal driver 2 carries out signal shaping and amplifying processing on the received first electric signal and then sends the first electric signal to the optical sending component 3; the optical sending component 3 converts the received first electrical signal into a first optical signal and sends the first optical signal to a first port of the circulator 5, the first port of the circulator 5 sends the received first optical signal to a second port of the circulator 5, and the second port of the circulator 5 sends the first optical signal to a communication opposite end through an optical fiber connected with the communication opposite end, so that the optical signal is sent;
for the signal reception direction: the second port of the circulator 5 receives a second optical signal sent by the opposite communication terminal through an optical fiber connected with the opposite communication terminal, and sends the received second optical signal to the third port of the circulator 5, the third port of the circulator 5 sends the received second optical signal to the optical receiving component 4, and the optical receiving component 4 converts the received second optical signal into a second electrical signal and sends the second electrical signal to the connector 1, so that the optical signal is received.
Therefore, through the optical transceiver module shown in fig. 1 of this embodiment, single-fiber bidirectional communication can be achieved, and fiber resource cost can be effectively saved; meanwhile, the circulator supports the same wavelength in the transmitting direction and the receiving direction, so that the optical transceiver module provides a basis for receiving and transmitting optical signals by adopting the same wavelength, and compared with a mode that single-fiber bidirectional receiving and transmitting in a related fronthaul network adopt different wave bands, the complexity and the cost of networking, control and maintenance are greatly reduced.
In this embodiment, the connector 1 may be implemented by, but not limited to, a pluggable optical module, and the type of the pluggable optical module may be flexibly selected, for example, but not limited to, a CFP connector, a CFP2 connector, or a CFP4 connector, etc. may be adopted.
In some examples of this embodiment, please refer to fig. 2, according to requirements, the optical transceiver module in this embodiment may further include a signal conversion module 6 connected between the connector 1 and the signal driver 2, wherein the connector 1 sends a first electrical signal to be sent out to the signal conversion module 6, and the first electrical signal is sent to the signal driver 2 after being converted by the signal conversion module 6. The light receiving component 4 is also connected to the connector 1 via the signal conversion module 6, and the light receiving component 4 sends the second electrical signal to the connector 1 via the signal conversion module 6. The signal conversion module 6 can be flexibly configured according to a specific application scenario for specifically performing conversion processing on the first electrical signal and the second electrical signal. For example, in a related fronthaul network, it is difficult to meet the bandwidth requirement of a high-frequency site after 5G large-scale deployment by using a single-fiber bidirectional transmission mode of 10Gb/s, 25Gb/s NRZ or 50G PAM4, and an optical transceiver module supporting a bit rate of 200G is still blank in the current fronthaul network. For the problem, the optical transceiver module provided in this embodiment may further convert, based on a PAM4 technique, 8 channels of NRZ signals with a bit rate of 25G in the transmission direction into 4 channels of pulse 4 level modulation PAM4 signals with a bit rate of 50G, and then convert the signals into corresponding 4 channels of optical signals to be transmitted via the optical transmission module 3, and convert corresponding 4 channels of PAM4 signals with a bit rate of 50G, obtained by converting the signals in the reception direction according to the 4 channels of optical signals, into 8 channels of NRZ signals with a bit rate of 25G, and then transmit the signals to the connector 1, thereby implementing transmission with a baud rate of 200G by using the optical transmission module 3 and the optical reception module 4 with a baud rate of 100G; the bandwidth of 200G not only meets the requirement of 5G high-frequency sites for a large number of AAU aggregation networking, but also can save the cost of optical components to a great extent.
To achieve the above object, in one example of the present embodiment: the connector 1 can be a signal transceiving channel with 8 channels and 25G of bit rate, and the first electric signal is 8 channels of NRZ signals with 25G of bit rate received by the connector 1;
the signal conversion module 6 converts 8 paths of NRZ signals with 25G bit rate transmitted by the connector 1 into 4 paths of PAM4 signals with 50G bit rate by adopting a pulse 4 level modulation PAM4 technology;
the signal driver 2 is a linear driver with 4-channel baud rate of 28G, and sends each of the 4 paths of PAM4 signals with bit rate of 50G received from the signal conversion module 6 to the optical sending component 3 after signal shaping and amplification processing; the specific signal shaping and amplifying processing mode can be flexibly set according to specific requirements;
referring to fig. 3, the optical transmission assembly 3 in this example includes a laser 31 and a multiplexer 33, where the laser 31 has 4 baud rate signal transmission channels of 28G, and is configured to convert each of the received 4 channels of PAM4 signals with bit rate of 50G into a corresponding optical signal, and send the corresponding optical signal to the multiplexer 33; the multiplexer 33 synthesizes the received 4 paths of optical signals into one path of optical signal as a first optical signal, and sends the first optical signal to a first port of the circulator; thereby realizing the transmission of the optical signal.
Referring to fig. 3, the optical transmitter assembly 3 specifically includes a modulator 32 connected to a laser 31; the modulator 32 modulates the 4 optical signals converted by the laser 31 and then sends the modulated optical signals to the multiplexer 33, wherein the modulator 32 can be, but is not limited to, an EA modulator.
Referring to fig. 4, the optical receiving component 4 includes a demultiplexer DEMUX41 and a receiver 42, wherein the receiver is a signal receiving channel with 4 baud rate of 28G;
the demultiplexer 41 decomposes the second optical signal received from the third port of the circulator 5 into 4 optical signals to be transmitted to the receiver 42; the receiver 42 converts the received 4 paths of optical signals into corresponding 4 paths of PAM4 signals with a bit rate of 50G as second electrical signals, and sends the second electrical signals to the signal conversion module 6; the signal conversion module 6 converts 4 paths of PAM4 signals with the bit rate of 50G received from the receiver 42 into 8 paths of NRZ signals with the bit rate of 25G and sends the NRZ signals to the connector 1; thereby achieving reception of the optical signal.
In this example, the wavelengths used by the optical transceiver modules in the transmission direction and the reception direction may be the same, and in this case, the wavelength of the 4 optical signals obtained by converting each of the received 4 channels of PAM4 signals with a bit rate of 50G into the corresponding optical signal by the laser 31 is the same as the wavelength of the 4 optical signals obtained by decomposing the received second optical signal into 4 optical signals by the demultiplexer 41. And the specific wavelength range can be flexibly set according to the specific application requirements. For example, in an application scenario, the wavelengths of the 4 optical signals obtained by converting each of the received 4 PAM4 signals with a bit rate of 50G into a corresponding optical signal by the laser 31 may be respectively: 1294.56 nm-1296.56 nm, 1299.05 nm-1301.05 nm, 13034.58 nm-1305.58 nm and 1308.14 nm-1310.14 nm. For example, the wavelengths of the 4 optical signals in one example can be respectively: 1295.56nm, 1230.05nm, 13034.58nm and 1307.14 nm.
It can be seen that the optical transceiver module provided by the present embodiment has at least the following advantages:
the PAM4 modulation technology can be adopted to realize the transmission with the Baud rate of 100G optical components and the bit rate of 200G, compared with the traditional 100G optical module, the transmission with the bit rate of 200G can be realized under the condition of the same optical device bandwidth, and the cost of the optical components is greatly reduced.
In addition, compared with the traditional double-fiber bidirectional technology, the single-fiber bidirectional technology saves a large amount of fiber resources and greatly saves 5G deployment cost.
Meanwhile, the optical transceiver module can adopt the same-waveband technology, and compared with 2 optical modules between single-fiber bidirectional A/B wave pair transmission, the optical transceiver module adopts the same wavelength, so that the difficulty of network deployment and maintenance is greatly reduced.
Example two:
in this embodiment, on the basis of the above embodiment, an optical network terminal ONT is further provided, as shown in fig. 5, which includes a single board 7 and the optical transceiver module shown in the above embodiment. Specifically, referring to fig. 5, a single board 7 is connected to the connector 1 of the optical transceiver module, and is configured to send a first electrical signal to the connector 1, where the first electrical signal may be sent to a communication peer in the form of a first optical signal through the signal sending process shown in the foregoing embodiment; and receiving a second electrical signal from the connector 1, wherein the second electrical signal is converted from the second optical signal received from the correspondent terminal as shown in the above-mentioned embodiment.
The optical network terminal ONT in this embodiment may be applied to various communication application scenarios, for example, an example, but not limited to, a fronthaul network. For this reason, this embodiment further provides a communication system, please refer to fig. 6, which includes an active antenna unit AAU and a distribution unit DU, where the active antenna unit and the distribution unit respectively include a first optical network terminal and a second optical network terminal, both the first optical network terminal and the second optical network terminal include the optical transceiver module shown in the above embodiment, and the circulator 5 of the optical transceiver module of the first optical network terminal is communicatively connected to the circulator 5 of the optical transceiver module of the second optical network terminal, so as to implement optical signal interaction between the active antenna unit AAU and the distribution unit DU. For convenience of understanding, in the following description, a specific optical transceiver module structure adopted by the first optical network terminal and the second optical network terminal is taken as an example, please refer to fig. 7, where the optical transceiver module specifically includes:
high-speed connector: the CFP2 connector was used, 8 channels of which were used, each channel transmitting a 25G NRZ signal.
The signal conversion module: PAM4 modulation is adopted, a DSP chip is used for realizing the modulation, 8 paths of NRZ signals are converted into 4 paths of PAM4 signals, and the DSP chip can be selected from but not limited to an industrial chip corresponding to the application scene of a fronthaul network.
A driver: the driver with the 4-channel baud rate of 28G is used, and the driver chip is used for driving, amplifying and shaping the PAM4 signal output by the DSP. For PAM4 modulation, the driver may be, but is not limited to, a linear driver, and optionally an industrial-grade chip.
The laser of the 4-channel optical transmission assembly and the receiver of the 4-channel optical reception assembly can be implemented using, but not limited to, a 4-channel baud rate 28G rate BOX package. The laser device converts an electric signal into an optical signal, and the receiver converts the optical signal into the electric signal. The laser and receiver in this example also support industrial-grade applications.
The single-fiber bidirectional transmission is realized through a 3-port Circulator, a common port (namely a second port) of the Circulator is used as an output port of the module, and the other two ports (namely a first port and a third port) are respectively connected with the laser and the receiver. The optical signal output by the laser passes through the circulator and then is output through the common port of the circulator, and the input optical signal is connected to the receiver through the common port of the circulator for photoelectric conversion.
The same band is realized by a Circulator, and the same wavelength is used for transmitting the modules which transmit and receive the opposite waves by using the Circulator. LAN-WDM wavelengths of 1295.56nm, 1300.05nm, 1304.58nm and 1309.14nm are used in this example.
For the optical transceiver module shown in fig. 7, the optical signal transmission and reception processes are respectively as follows:
in the sending direction, 8 paths of 25G NRZ signals from a CFP2 high-speed connector are processed and converted into 4 paths of 50G PAM4 signals through a DSP chip, the 4 paths of 50G PAM4 signals are subjected to signal shaping through a 4-channel 28G linear driver and are subjected to driving amplification, the shaped and amplified 4-channel 50G PAM4 signals enter an EA modulator of an optical sending assembly to modulate optical signals sent by a laser, and the optical signals output by the laser are combined into one path of optical signals and then output through a Circulator.
In the receiving direction, 4-channel 50G PAM4 optical signals input from a Circulator are subjected to photoelectric conversion through a 4-channel receiver and converted into 4-channel 50G PAM4 electrical signals, the 4-channel 50G PAM4 electrical signals output by the receiver are processed and converted into 8-channel 25G NRZ signals through a DSP chip, and the 8-channel 25G NRZ signals are sent to a single board through a CFP2 high-speed connector.
In this example, the core device for realizing single-fiber bidirectional communication is a 3-port Circulator, two ends of the Circulator are respectively connected with the laser and the receiver, and the COM end at the other end is used as a common transceiving port, so that the characteristics of transceiving and single-fiber bidirectional communication can be realized.
Bearing the application scenario shown in fig. 6, it is assumed that the first optical network terminal specifically includes a first laser, a first MUX, a first receiver, a first DEMUX and a first circulator, and the second network terminal specifically includes a second laser, a second MUX, a second receiver, a second DEMUX and a second circulator. The first laser outputs optical signals with L4-L74 wavelengths, the 4 wavelengths are central wavelengths of LAN-WDM defined by standards, the optical signals are synthesized into one path through the first MUX passive device, then the optical signals are output to a single transmission optical fiber through the first circulator, the optical signals reach the second circulator through the transmission optical fiber, the optical signals enter the second DEMUX device on the right side after passing through the second circulator, the wavelengths are divided into 4 paths through the second DEMUX device and input to the second receiver, the second receiver converts the optical signals into 4 paths of electric signals, and the electric signals are transmitted to the subsequent second connector after being converted by the subsequent signals, so that the transmission of the optical signals between the first optical network terminal and the second optical network terminal is realized.
It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software (which may be implemented in computer program code executable by a computing device), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
In addition, communication media typically embodies computer readable instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to one of ordinary skill in the art. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114285476A (en) * | 2021-11-24 | 2022-04-05 | 武汉永鼎光通科技有限公司 | Single-channel wavelength division optical module |
| WO2023093130A1 (en) * | 2021-11-29 | 2023-06-01 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| WO2023197164A1 (en) * | 2022-04-12 | 2023-10-19 | 华为技术有限公司 | Baseband unit and access network device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102884734A (en) * | 2010-04-23 | 2013-01-16 | 三菱电机株式会社 | Optical communication system |
| CN106375017A (en) * | 2016-08-29 | 2017-02-01 | 武汉光迅科技股份有限公司 | Optical transceiving module based on PAM4 modulation |
| CN107124225A (en) * | 2017-03-08 | 2017-09-01 | 武汉电信器件有限公司 | A kind of high speed PAM4 optical transceiver modules based on DML |
| CN109412696A (en) * | 2018-08-28 | 2019-03-01 | 武汉光迅科技股份有限公司 | Bidirectional light receiving and transmitting module based on PAM4 modulation technique |
| CN109672475A (en) * | 2019-01-09 | 2019-04-23 | 杭州芯耘光电科技有限公司 | It is a kind of can remote adjustment wavelength two-way transmission optical module |
-
2019
- 2019-12-19 CN CN201911320184.9A patent/CN113014326B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102884734A (en) * | 2010-04-23 | 2013-01-16 | 三菱电机株式会社 | Optical communication system |
| CN106375017A (en) * | 2016-08-29 | 2017-02-01 | 武汉光迅科技股份有限公司 | Optical transceiving module based on PAM4 modulation |
| CN107124225A (en) * | 2017-03-08 | 2017-09-01 | 武汉电信器件有限公司 | A kind of high speed PAM4 optical transceiver modules based on DML |
| CN109412696A (en) * | 2018-08-28 | 2019-03-01 | 武汉光迅科技股份有限公司 | Bidirectional light receiving and transmitting module based on PAM4 modulation technique |
| CN109672475A (en) * | 2019-01-09 | 2019-04-23 | 杭州芯耘光电科技有限公司 | It is a kind of can remote adjustment wavelength two-way transmission optical module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114285476A (en) * | 2021-11-24 | 2022-04-05 | 武汉永鼎光通科技有限公司 | Single-channel wavelength division optical module |
| WO2023093130A1 (en) * | 2021-11-29 | 2023-06-01 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| WO2023197164A1 (en) * | 2022-04-12 | 2023-10-19 | 华为技术有限公司 | Baseband unit and access network device |
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|---|---|
| CN113014326B (en) | 2024-12-27 |
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