CN110571634B - Optical signal output device and method, and storage medium - Google Patents
Optical signal output device and method, and storage medium Download PDFInfo
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- CN110571634B CN110571634B CN201910741568.1A CN201910741568A CN110571634B CN 110571634 B CN110571634 B CN 110571634B CN 201910741568 A CN201910741568 A CN 201910741568A CN 110571634 B CN110571634 B CN 110571634B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 753
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 143
- KWMNWMQPPKKDII-UHFFFAOYSA-N erbium ytterbium Chemical compound [Er].[Yb] KWMNWMQPPKKDII-UHFFFAOYSA-N 0.000 claims abstract description 103
- 238000005086 pumping Methods 0.000 claims description 16
- 239000013307 optical fiber Substances 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 description 22
- 238000010586 diagram Methods 0.000 description 11
- 229910052691 Erbium Inorganic materials 0.000 description 9
- 229910052769 Ytterbium Inorganic materials 0.000 description 9
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 9
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 9
- 238000004891 communication Methods 0.000 description 7
- 230000005855 radiation Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000002269 spontaneous effect Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094069—Multi-mode pumping
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- 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
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
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Abstract
The embodiment of the invention discloses an optical signal output device and method and a storage medium, wherein the optical signal output device comprises: a laser transmitter; the first pump and the second pump are connected with the laser emitter, the first pump comprises a first erbium-ytterbium double-clad fiber, and the second pump comprises a second erbium-ytterbium double-clad fiber; the laser transmitter is used for transmitting the emitted first pump light signal to the first pump and transmitting the emitted second pump light signal to the second pump; the first pump is used for absorbing a first pump optical signal by using the first erbium ytterbium double-clad fiber, converting the first pump optical signal into a first waveband optical signal and transmitting the first waveband optical signal to the second pump for outputting; and the second pump is used for absorbing the second pump optical signal by using the second erbium ytterbium double-clad fiber, converting the second pump optical signal into a first target waveband optical signal according to the wavelength range of the first sub-waveband optical signal and outputting the first target waveband optical signal.
Description
Technical Field
The present invention relates to the field of optical fiber communication technologies, and in particular, to an optical signal output apparatus and method, and a storage medium.
Background
In recent years, in an optical fiber communication system, as communication capacity is increased, a Dense Wavelength Division Multiplexing (DWDM) system bandwidth is expanded, and among these, communication devices and devices related to L-band communication are applied more and more widely as the communication system bandwidth is expanded.
In the existing optical fiber communication technology, a single-mode pump laser is adopted to generate pump light, an erbium-doped fiber is used as a gain medium to form a forward pumping structure to obtain a first sub-band optical signal, optionally, the first sub-band optical signal can be an optical signal of an L-band, and as the erbium-doped fiber has a weak ability to absorb the pump optical signal, the bandwidth of the generated L-band optical signal is narrow, and the output power of the obtained optical signal of the L-band is small.
Disclosure of Invention
In order to solve the above technical problem, embodiments of the present invention desirably provide an optical signal output apparatus and method, and a storage medium, which can increase the output power of the first sub-band optical signal and increase the bandwidth of the first sub-band optical signal.
The technical scheme of the invention is realized as follows:
the present application provides an optical signal output apparatus, the apparatus including:
a laser transmitter;
the first pump and the second pump are connected with the laser emitter, the first pump comprises a first erbium-ytterbium double-clad fiber, and the second pump comprises a second erbium-ytterbium double-clad fiber;
the laser transmitter is used for transmitting a first pump light signal and a second pump light signal; and transmitting the first pump optical signal to the first pump; transmitting the second pump optical signal to the second pump;
the first pump is configured to absorb the first pump optical signal by using the first erbium ytterbium double-clad fiber, convert the first pump optical signal into a first waveband optical signal, and transmit the first subband optical signal to the second pump; the first sub-waveband optical signal is an optical signal of a partial waveband in the first waveband optical signal;
the second pump is configured to absorb the second pump optical signal by using the second erbium ytterbium double-clad fiber, convert the second pump optical signal into a first target waveband optical signal having the same wavelength as the first subband optical signal according to the wavelength range of the first subband optical signal, and output the first target waveband optical signal and the first subband optical signal.
In the above optical signal output apparatus, the apparatus further includes: an optical converter connected to the first pump and the second pump;
the input end of the optical converter is connected with the output end of the first pump through a first optical isolator, and the output end of the optical converter is connected with the input end of the second pump through a second optical isolator;
the first optical isolator is used for transmitting the first waveband optical signal to the optical converter in a single direction;
the optical converter is used for converting a second sub-waveband optical signal in the first waveband optical signal into a first preset waveband optical signal; transmitting the first sub-band optical signal and the first preset band optical signal to the second optical isolator, wherein the first preset band optical signal is an optical signal with the same wavelength as the first sub-band optical signal; the second sub-band optical signal is an optical signal except the first sub-band optical signal in the first band optical signal;
and the second optical isolator is used for unidirectionally transmitting the first preset waveband optical signal and the first sub-waveband optical signal to the input end of the second pump.
In the above optical signal output apparatus, the optical converter includes: a gain flattening filter and a first erbium-doped fiber;
the input end of the first erbium-doped fiber is connected with the output end of the first optical isolator, the output end of the first erbium-doped fiber is connected with the input end of the gain flattening filter, and the output end of the gain flattening filter is connected with the input end of the second optical isolator;
the first erbium-doped fiber is configured to convert the second sub-band optical signal into the first preset-band optical signal according to the length of the first erbium-doped fiber, and transmit the first preset-band optical signal and the first sub-band optical signal to the gain flattening filter;
the gain flattening filter is used for filtering a first sub-waveband optical signal and an optical signal of which the gain does not meet the preset gain in the first preset waveband optical signal, and transmitting the first sub-waveband optical signal and the first preset waveband optical signal to the second optical isolator.
In the above optical signal output apparatus, the first pump further includes: the first erbium ytterbium double-clad optical fiber is connected with the first erbium ytterbium double-clad optical fiber; a reflector connected with the first beam combiner; the first beam combiner comprises a first pumping end;
the reflecting mirror is connected with the input end of the first beam combiner; the output end of the first combiner is connected with the input end of the first erbium-ytterbium double-clad fiber; the first pumping end is connected with a first output end of the laser transmitter;
the first combiner is configured to transmit the first pump light signal to the first erbium-ytterbium double-clad fiber through the first pump end;
the first erbium ytterbium double-clad fiber is further configured to absorb a first sub-pump optical signal and convert the first sub-pump optical signal into the first waveband optical signal, where the first waveband optical signal includes a first optical signal and a second optical signal; transmitting the first optical signal to the mirror through the first beam combiner, and transmitting the first sub-band optical signal in the second optical signal to the second pump; when the first optical signal reflected by the reflector is received, a second sub-pump optical signal is absorbed, and the second sub-pump optical signal is converted into a third optical signal according to the wavelength range of the first optical signal; transmitting the first sub-band optical signals in the third optical signals to the second pump; the third optical signal is an optical signal with the same wavelength as the first waveband optical signal; the first pump optical signal includes: the first sub pump optical signal and the second sub pump optical signal;
the reflector is configured to reflect the first optical signal, and transmit the reflected first optical signal to the first erbium ytterbium double-clad fiber through the first beam combiner.
In the above optical signal output apparatus, the second pump further includes: the second erbium ytterbium double-clad fiber is connected with the second erbium ytterbium double-clad fiber, and the second combiner comprises a second pumping end;
the output end of the second erbium ytterbium double-clad fiber is connected with the input end of the second beam combiner; the second pumping end is connected with a second output end of the laser transmitter;
the second combiner is configured to transmit the second pump light signal to the second erbium ytterbium double-clad fiber through the second pump end;
the second erbium ytterbium double-clad fiber is configured to absorb the second pump optical signal, convert the second pump optical signal into a first target waveband optical signal having the same wavelength as the first subband optical signal according to the wavelength range of the first subband optical signal, and combine the first target waveband optical signal, the first subband optical signal, and the first preset waveband optical signal into an optical signal to be output through the second combiner.
In the above optical signal output apparatus, the apparatus further includes: the second erbium-doped fiber is connected with the second beam combiner, and the second beam combiner is connected with the second erbium-doped fiber through a third optical isolator;
the second erbium ytterbium double-clad fiber is further configured to absorb the second pump light signal and convert the second pump light signal into a second band light signal; the second waveband optical signal is an optical signal with the same wavelength as the first waveband optical signal;
the third optical isolator is used for unidirectionally transmitting the second waveband optical signal and the optical signal to be output to the second erbium-doped optical fiber;
the second erbium-doped optical fiber is configured to convert a fourth sub-band optical signal in the second band optical signal into a second preset band optical signal according to the length of the second erbium-doped optical fiber, add the second preset band optical signal and an optical signal, except the fourth sub-band optical signal, in the second band optical signal to the optical signal to be output, and output the optical signal to be output in a single direction.
In the above optical signal output device, the laser transmitter includes: the multimode pump laser transmitter comprises a multimode pump laser transmitter and a multimode coupler;
wherein the output end of the multimode pump laser transmitter is connected with the input end of the multimode coupler; the output end of the multimode coupler is connected with the first pump and the second pump;
the multimode pump laser transmitter is used for transmitting a pump light signal;
the multimode coupler is used for dividing the pump optical signal into a first pump optical signal and a second pump optical signal; and transmitting the first pump optical signal to the first pump and the second pump optical signal to the second pump.
The embodiment of the application provides an optical signal output method, which comprises the following steps:
emitting a first pump light signal and a second pump light signal;
converting the first pump optical signal into a first waveband optical signal;
converting the second pump optical signal into a first target waveband optical signal with the same wavelength as the first waveband optical signal according to the wavelength range of the first waveband optical signal, wherein the first waveband optical signal is an optical signal in a partial waveband in the first waveband optical signal;
and outputting the first target waveband optical signal and the first sub-waveband optical signal.
In the above method, after converting the first pump light signal into the first wavelength band light signal, the method further includes:
converting a second sub-waveband optical signal in the first waveband optical signal into a first preset waveband optical signal, wherein the second sub-waveband optical signal is an optical signal except the first sub-waveband optical signal in the first waveband optical signal, and the first preset waveband optical signal is an optical signal with the same wavelength as the first sub-waveband optical signal;
and outputting the first preset waveband optical signal.
The present application provides a storage medium, on which a computer program is stored, for application to an optical signal output apparatus, the computer program, when executed by a processor, implementing the method as set forth in any one of the above.
The embodiment of the invention provides an optical signal output device and method and a storage medium, wherein the device comprises: a laser transmitter; the first pump and the second pump are connected with the laser emitter, the first pump comprises a first erbium-ytterbium double-clad fiber, and the second pump comprises a second erbium-ytterbium double-clad fiber; the laser transmitter is used for transmitting a first pump light signal and a second pump light signal; and transmitting the first pump optical signal to the first pump; transmitting the second pump optical signal to a second pump; the first pump is used for absorbing a first pump optical signal by using the first erbium ytterbium double-clad fiber, converting the first pump optical signal into a first waveband optical signal and transmitting the first waveband optical signal to the second pump; the first sub-waveband optical signal is an optical signal of a partial waveband in the first waveband optical signal; and the second pump is used for absorbing the second pump optical signal by using the second erbium ytterbium double-clad fiber, converting the second pump optical signal into a first target waveband optical signal with the same wavelength as the first subband optical signal according to the wavelength range of the first subband optical signal, and outputting the first target waveband optical signal and the first subband optical signal. By adopting the implementation scheme of the optical signal output device, the first erbium-ytterbium double-clad fiber is utilized to convert the absorbed first pump optical signal into the first waveband optical signal, the first erbium-ytterbium double-clad fiber not only contains erbium particles but also contains ytterbium particles, the erbium and ytterbium particles absorb the pump optical signal together, so that the erbium and ytterbium particles can jump to a high energy level state, when the erbium and ytterbium particles jump from the high energy level state to a stable state, the first subband optical signal with larger power can be generated, when the erbium and ytterbium particles in the high energy level state can jump to different energy levels, the erbium-ytterbium double-clad fiber generates optical signals of different wavebands, the bandwidth of the first subband optical signal is increased, when the second erbium-ytterbium double-clad fiber absorbs the second pump optical signal, more optical signals which are the same as the range of the first subband optical signal can be generated according to the received waveband range of the first optical signal, the output power of the first sub-band optical signal is increased.
Drawings
Fig. 1 is a first schematic structural diagram of an optical signal output device according to an embodiment of the present disclosure;
fig. 2 is a schematic connection diagram of an exemplary ground optical signal output device according to an embodiment of the present disclosure;
fig. 3 is a flowchart of a first optical signal output method according to an embodiment of the present disclosure;
fig. 4 is a flowchart of a second optical signal output method according to an embodiment of the present disclosure.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example one
An embodiment of the present application provides an optical signal output apparatus 1, as shown in fig. 1, including:
a laser transmitter 11;
a first pump 12 and a second pump 13 connected to the laser transmitter 11, wherein the first pump 12 includes a first erbium ytterbium double-clad fiber 121, and the second pump 13 includes a second erbium ytterbium double-clad fiber 131;
the laser transmitter 11 is configured to transmit a first pump light signal and a second pump light signal; and transmits the first pump optical signal to the first pump 12; transmitting the second pump optical signal to the second pump 13;
the first pump 12 is configured to absorb the first pump optical signal by using the first erbium ytterbium double-clad fiber, convert the first pump optical signal into a first waveband optical signal, and transmit the first subband optical signal to the second pump 13; the first sub-waveband optical signal is an optical signal of a partial waveband in the first waveband optical signal;
the second pump 13 is configured to absorb the second pump optical signal by using the second erbium ytterbium double-clad fiber, convert the second pump optical signal into a first target waveband optical signal having the same wavelength as the first subband optical signal according to the wavelength range of the first subband optical signal, and output the first target waveband optical signal and the first subband optical signal.
The optical signal output device provided by the embodiment of the application is suitable for a scene of generating an ASE optical signal of an L-band optical signal by utilizing an ASE spectrum of a rare earth element-doped optical fiber.
In the embodiment of the application, the optical signal output device comprises a laser transmitter, a first pump and a second pump which are connected with the laser transmitter; the laser transmitter comprises two output ends, namely a first output end and a second output end; the first pump laser comprises a first pump end, and the second pump laser comprises a second pump end. The first output end of the laser transmitter is connected with the first pumping end of the first pump, and the second output end of the laser transmitter is connected with the second pumping end of the second pump. The laser transmitter transmits the generated first pump light signal to the first pump end through the first output end, and transmits the generated second pump light signal to the second pump end through the second output end.
In the embodiment of the present application, the first pump includes a first erbium ytterbium double-clad fiber, and the second pump includes a second erbium ytterbium double-clad fiber; when the pump end of the first pump laser receives the first pump light signal, the first erbium-ytterbium double-clad fiber absorbs the first pump light signal, the erbium-ytterbium particles in the erbium-ytterbium double-clad fiber are transited to reach a high energy level state, and because the high energy level state is an unstable state energy level, when the erbium-ytterbium particles are transited from the high energy level state to a stable low energy level state, energy is released, spontaneous radiation is formed, and the first waveband light signal is generated.
In an embodiment of the present application, the first wavelength band optical signal includes a first sub-wavelength band optical signal, and the first pump laser transmits the first sub-wavelength band optical signal to the second pump.
It should be noted that the first waveband optical signal is an optical signal with a wider waveband range, the first sub-waveband optical signal is an optical signal of a partial waveband in the first waveband optical signal, and the waveband range of the first sub-waveband optical signal is smaller than the waveband range of the first waveband optical signal. For example, the wavelength range of the first sub-band optical signal may be 1528-.
In this embodiment, when the second pump laser receives the second pump optical signal, the second pump optical signal is absorbed by the second erbium-ytterbium double-clad fiber, so that the erbium-ytterbium particles in the second erbium-ytterbium double-clad fiber jump to a high energy level state, and jump from the high energy level state to a stable low energy level state due to the unstable state of the high energy level state, energy is released, and when the first sub-band optical signal is received, excited radiation is formed, an optical signal having the same wavelength range as that of the first sub-band optical signal, that is, the first target band optical signal, is generated according to the wavelength range of the received first sub-band optical signal, and the first target band optical signal and the first sub-band optical signal are output.
Illustratively, when the first sub-band optical signal is an L-band optical signal with a band range of 1563-.
The first pump optical signal and the second pump optical signal are pump optical signals having the same wavelength.
Illustratively, the center wavelength of the laser transmitter may be 940nm, and when the laser transmitter is turned on, the laser transmitter generates a first pump light signal having a wavelength of 940nm and a second pump light signal having a wavelength of 940 nm.
Optionally, the apparatus further comprises: an optical converter 14 connected to the first pump 12 and the second pump 13;
the input end of the optical converter 14 is connected to the output end of the first pump 12 through a first optical isolator 16, and the output end of the optical converter 14 is connected to the input end of the second pump 13 through a second optical isolator 17;
the first optical isolator 16 is configured to transmit the first-band optical signal to the optical converter 14 in a single direction;
the optical converter 14 is configured to convert a second sub-band optical signal in the first band optical signal into a first preset band optical signal; transmitting the first sub-band optical signal and the first predetermined band optical signal to the second optical isolator 17, where the first predetermined band optical signal is an optical signal having the same wavelength as the first sub-band optical signal; the second sub-band optical signal is an optical signal except the first sub-band optical signal in the first band optical signal;
and the second optical isolator 17 is configured to transmit the first preset waveband optical signal and the first sub-waveband optical signal to the input end of the second pump in a single direction.
In the embodiment of the present application, a schematic connection diagram of the optical signal output device is shown in fig. 2, and the laser transmitter 11 includes: a multimode pump laser transmitter 111 and a multimode coupler 112; the first pump includes: a mirror 123, a first combiner 122 and a first erbium ytterbium double-clad fiber 121; the light converter 14 includes: a first erbium-doped fiber 141 and a gain flattening filter 142; the second pump 13 includes: a second erbium ytterbium double-clad fiber 131 and a second combiner 132.
When the pump light signal emitted by the multimode pump laser transmitter 111 passes through the multimode coupler 112, the multimode coupler splits the pump light signal into a first pump light signal and a second pump light signal, and transmits the first pump light signal to the first erbium-ytterbium double-clad fiber 121 through the first combiner 122, and transmits the second pump light signal to the second erbium-ytterbium double-clad fiber 131 through the second combiner 132.
The first erbium-ytterbium double-clad fiber 121 absorbs the first sub-pump light signal in the first pump light signal to generate the first waveband light signal, the first light signal in the first waveband light signal is transmitted to the mirror 123 through the first beam combiner 122, the mirror 123 reflects the first light signal and transmits the first light signal to the first erbium-ytterbium double-clad fiber 121 through the first beam combiner 122, when the first erbium-ytterbium double-clad fiber 121 receives the first light signal, the first erbium-ytterbium double-clad fiber 121 absorbs the second sub-pump light signal in the first pump light signal, converts the second sub-pump light signal into a third light signal having the same wavelength range as the first light signal, and unidirectionally transmits the third light signal and the second light signal in the first waveband light signal to the first erbium-doped fiber 141 through the first optical isolator 16.
The first erbium-doped fiber 141 converts the second sub-band optical signal of the third optical signal and the second optical signal into a first predetermined band optical signal, and transmits the first sub-band optical signal and the first predetermined band optical signal of the third optical signal and the second optical signal to the gain flattening filter 142, and after the gain flattening filter 142 filters the optical signal which does not satisfy the predetermined gain in the first sub-band optical signal and the first predetermined band optical signal, the first sub-band optical isolation optical signal and the first predetermined band optical signal are transmitted to the second erbium-ytterbium double-clad fiber 131 through the second erbium-ytterbium optical isolator 17.
When the second erbium ytterbium double-clad fiber 131 receives the second pump light signal, the second erbium ytterbium double-clad fiber 131 absorbs the second pump light signal, generates the first target waveband light signal having the same wavelength as the first subband light signal according to the wavelength range of the received first subband light signal, and outputs the first target waveband light signal through the second beam combiner 132. When the second erbium-ytterbium double-clad fiber 131 absorbs the second spectral optical signal and generates a second waveband optical signal with the same wavelength as the first waveband optical signal, the second waveband optical signal is transmitted to the second erbium-doped fiber 15 in a unidirectional manner through the second beam combiner 132 and the third optical isolator 18, the second erbium-doped fiber 15 converts a fourth sub-waveband optical signal in the second waveband optical signal into a second preset waveband optical signal, and the second erbium-doped fiber 15 outputs the second preset waveband optical signal and an optical signal, except the fourth sub-waveband optical signal, in the second waveband optical signal in a unidirectional manner.
The first waveband optical signal output by the first pump is transmitted to the optical converter in a one-way mode through the first optical isolator, the optical converter transmits a first sub-waveband optical signal in the first waveband optical signal to the second optical isolator, and the second optical isolator transmits the first sub-waveband optical signal and a first preset waveband optical signal generated by the optical converter in a one-way mode to the second pump.
It should be noted that the first band optical signal includes a second sub-band optical signal, the second sub-band optical signal is an optical signal of the first band optical signal except the first band optical signal, for example, the band range of the first band optical signal may be 1528-.
In the embodiment of the present application, when the optical converter receives the first wavelength band optical signal, the optical converter converts the second sub-wavelength band optical signal in the first wavelength band optical signal into the first predetermined wavelength band optical signal, and transmits the first predetermined wavelength band optical signal and the first sub-wavelength band optical signal to the second optical isolator.
It should be noted that the first predetermined wavelength band optical signal is an optical signal with the same wavelength as the first sub-wavelength band optical signal, for example, the wavelength range of the first sub-wavelength band optical signal is 1563-.
For example, if the first sub-band optical signal is an L-band optical signal, the second sub-band optical signal is a C-band optical signal, and the first predetermined band optical signal is an optical signal having the same wavelength as the first sub-band optical signal, the optical converter may convert the second sub-band optical signal into the first predetermined band optical signal by: the optical converter converts the C-band optical signal into an L-band optical signal.
Optionally, the light converter 14 includes: a gain flattening filter 142 and a first erbium-doped fiber 141;
the input end of the first erbium-doped fiber 141 is connected with the output end of the first optical isolator 16, the output end of the first erbium-doped fiber 141 is connected with the input end of the gain flattening filter 142, and the output end of the gain flattening filter 142 is connected with the input end of the second optical isolator 17;
the first erbium-doped fiber 141 is configured to convert the second sub-band optical signal into the first preset-band optical signal according to the length of the first erbium-doped fiber 141, and transmit the first preset-band optical signal and the first sub-band optical signal to the gain flattening filter 142;
the gain flattening filter 142 is configured to filter out a first sub-band optical signal and an optical signal in the first preset band optical signal, where the gain of the first sub-band optical signal does not satisfy a preset gain, and transmit the first sub-band optical signal and the first preset band optical signal to the second optical isolator 17.
In this embodiment, the optical converter includes a gain flattening filter and a first erbium-doped fiber, when the first optical isolator unidirectionally transmits the first waveband optical signal to the first erbium-doped fiber, the first erbium-doped fiber converts the second subband optical signal in the first waveband optical signal into a first preset waveband optical signal according to the length of the first erbium-doped fiber, and transmits the first subband optical signal in the first preset waveband optical signal and the first waveband optical signal to the gain flattening filter, the gain flattening filter filters the optical signal whose gain does not satisfy the preset gain in the first preset waveband optical signal and the first subband optical signal, and transmits the first preset waveband optical signal and the first subband optical signal to the second optical isolator.
It should be noted that the length of the first erbium-doped fiber affects the conversion result of the second sub-band optical signal, and the length of the first erbium-doped fiber can be set to convert the second sub-band optical signal into the first predetermined band optical signal.
Illustratively, when the length of the first erbium-doped fiber is 16.5m, the first erbium-doped fiber can convert the optical signal with the wavelength range of 1528-.
Optionally, the first pump 12 further comprises: a first combiner 122 connected to the first erbium ytterbium double-clad fiber 121; a mirror 123 connected to the first beam combiner 122; the first beam combiner comprises a first pumping end;
wherein the reflector is connected to an input end of the first beam combiner 122; the output end of the first combiner 122 is connected to the input end of the first erbium-ytterbium double-clad fiber 121; the first pumping end is connected with a first output end of the laser transmitter 11;
the first combiner 122 is configured to transmit the first pump light signal to the first erbium ytterbium double-clad fiber 121 through the first pump end;
the first erbium ytterbium double-clad fiber 121 is further configured to absorb a first sub-pump optical signal, and convert the first sub-pump optical signal into the first band optical signal, where the first band optical signal includes a first optical signal and a second optical signal; transmitting the first optical signal to the mirror 123 through the first beam combiner, and transmitting the first sub-band optical signal in the second optical signal to the second pump 13; when receiving the first optical signal reflected by the mirror 123, absorbing a second sub-pump optical signal, and converting the second sub-pump optical signal into a third optical signal according to a wavelength range of the first optical signal; transmitting the first sub-band optical signal of the third optical signal to the second pump 13; the third optical signal is an optical signal with the same wavelength as the first waveband optical signal; the first pump optical signal includes: the first sub pump optical signal and the second sub pump optical signal;
the mirror 123 is configured to reflect the first optical signal, and transmit the reflected first optical signal to the first erbium ytterbium double-clad fiber 121 through the first combiner 122.
In this embodiment, the first sub-pump optical signal is a part of the optical signal in the first pump optical signal, and the second sub-pump optical signal is an optical signal of the first pump optical signal except the first sub-pump optical signal. The first optical signal is a part of the first band optical signal, and the second optical signal is an optical signal of the first band optical signal except the first optical signal. When the first erbium ytterbium double-clad fiber generates the first waveband optical signal, the first optical signal is transmitted reversely, and the first optical signal is reflected to the first erbium ytterbium double-clad fiber through the reflecting mirror.
It should be noted that the length of the first erbium ytterbium double-clad fiber affects the conversion efficiency of the first sub-band optical signal in the first wavelength band optical signal, and the length of the first erbium ytterbium double-clad fiber may be set to convert the first sub-pump optical signal into an optical signal with a wavelength band range of the first sub-band optical signal and an optical signal with a small wavelength band range of the second sub-band optical signal.
Illustratively, the first combiner may be a (1+1) × 1 type combiner, i.e., the first combiner includes an input terminal, an output terminal and a pumping terminal.
Optionally, the second pump 13 further includes: a second combiner 132 connected to the second erbium ytterbium double-clad fiber 131, the second combiner including a second pump end;
the output end of the second erbium ytterbium double-clad fiber 131 is connected to the input end of the second beam combiner 132; the second pumping end is connected with a second output end of the laser emitter 11;
the second combiner 132 is configured to transmit the second pump light signal to the second erbium ytterbium double-clad fiber 131 through the second pump end;
the second erbium ytterbium double-clad fiber 131 is configured to absorb the second pump optical signal, convert the second pump optical signal into a first target waveband optical signal having the same wavelength as the first subband optical signal according to the wavelength range of the first subband optical signal, and combine the first target waveband optical signal, the first subband optical signal, and the first preset waveband optical signal into an optical signal to be output through the second beam combiner.
In this embodiment, when the second erbium-ytterbium double-clad fiber receives the second pump optical signal transmitted by the second combiner, the second pump optical signal is absorbed, so that the erbium-ytterbium particles in the second erbium-ytterbium double-clad fiber jump to a high energy level state, and jump from the high energy level state to a stable low energy level state due to the unstable energy level state of the high energy level state, energy is released, and when the first sub-band optical signal is received, excited radiation is formed, an optical signal having the same wavelength range as that of the first sub-band optical signal, that is, a first target band optical signal, is generated according to the wavelength range of the received first sub-band optical signal, and the first target band optical signal, the received first sub-band optical signal, and the first predetermined band optical signal are combined to be output by the second combiner.
The second combiner may be, for example, a (1+1) × 1 type combiner, i.e., the second combiner includes an input terminal, an output terminal, and a pumping terminal.
Optionally, the optical signal output apparatus 1 further includes: a second erbium-doped fiber 15 connected to the second combiner 132, wherein the second combiner 132 is connected to the second erbium-doped fiber 15 through a third optical isolator 18;
the second erbium ytterbium double-clad fiber 131 is further configured to absorb the second pump light signal, and convert the second pump light signal into a second wavelength band light signal; the second waveband optical signal is an optical signal with the same wavelength as the first waveband optical signal;
the third optical isolator 18 is configured to transmit the optical signal in the second waveband and the optical signal to be output to the second erbium-doped fiber 15 in a unidirectional manner;
the second erbium-doped fiber 15 is configured to convert a fourth sub-band optical signal in the second band optical signal into a second preset band optical signal according to the length of the second erbium-doped fiber 15, add the second preset band optical signal and an optical signal, except the fourth sub-band optical signal, in the second band optical signal to the optical signal to be output, and output the optical signal to be output in a unidirectional manner.
In the embodiment of the present application, the output end of the second erbium-doped fiber is provided with a fourth optical isolator 19, and the fourth optical isolator 19 can unidirectionally output the optical signal in the second erbium-doped fiber 15 to the output end.
In this embodiment of the application, when the second erbium-ytterbium double-clad fiber absorbs the second pump optical signal to form spontaneous radiation, and converts the second pump optical signal into a second band optical signal with the same wavelength as the first band optical signal, the second band optical signal is transmitted to the third optical isolator through the second beam combiner, the third optical isolator unidirectionally transmits the second band optical signal to the second erbium-doped fiber, the second erbium-doped fiber converts the fourth sub-band optical signal in the second band optical signal into a second predetermined band optical signal according to the length of the second erbium-doped fiber, and also adds the second predetermined band optical signal to the optical signal to be output, and unidirectionally transmits the optical signal to be output to the output end of the optical signal output device through the fourth optical isolator.
It should be noted that the second band optical signal is an optical signal having the same wavelength as the first band optical signal, and when the first band optical signal includes an L band optical signal and a C band optical signal, the second band optical signal also includes an L band optical signal and a C band optical signal. The second optical signal with the preset wave band is an optical signal with the same wave band range as the first sub-wave band optical signal, and is an L-wave band optical signal. The fourth sub-band optical signal may be a C-band optical signal of the second band optical signals. According to the length of the second erbium-doped fiber, the step of converting the fourth sub-band optical signal into the second predetermined band optical signal may be: and converting the C-band optical signal into an L-band optical signal according to the length of the second erbium-doped fiber.
Optionally, the laser transmitter 11 includes: a multimode pump laser transmitter 111 and a multimode coupler 112;
wherein, the output end of the multimode pump laser transmitter 111 is connected with the input end of the multimode coupler 112; the output end of the multimode coupler 112 is connected with the first pump 12 and the second pump 13;
the multimode pump laser transmitter 111 is configured to transmit a pump light signal;
the multimode coupler 112 is configured to split the pump light signal into a first pump light signal and a second pump light signal; and transmits the first pump optical signal to the first pump 12 and the second pump optical signal to the second pump 13.
In an embodiment of the present application, a laser transmitter includes: the multimode pump laser transmitter comprises a multimode pump laser transmitter and a multimode coupler, wherein the output end of the multimode pump laser transmitter is connected with the input end of the multimode coupler, and the multimode coupler comprises two output ends: the first output end is connected with the first pump, and the second output end is connected with the second pump.
In this embodiment of the application, after the multimode pump laser transmitter is started, the multimode pump laser transmitter starts to generate a pump light signal and transmits the generated multimode pump light signal to the multimode coupler, and the multimode coupler divides the received pump light signal according to a preset rule to obtain a first pump light signal and a second pump light signal, and transmits the first pump light signal to the first pump and the second pump light signal to the second pump.
Illustratively, the multimode pump laser transmitter may be a high-power pump laser transmitter of L4 series of luminum, the output power of the multimode pump laser transmitter may be 10W, the center wavelength may be 940nm, and when the multimode pump laser transmitter is started, the multimode pump laser transmitter starts to transmit a pump light signal with a wavelength of 940 nm.
The preset rule may be a conversion rule of the pump light signal.
For example, the multimode coupler may also be a high-power multimode coupler, the maximum carrying power of the high-power multimode coupler may be greater than 10W, the preset rule may be to divide the pump light signal into 20% of the pump light signal and 80% of the pump light signal, if the preset rule is to divide the pump light signal into 20% of the pump light signal and 80% of the pump light signal, transmit 20% of the pump light signal as the first pump light signal to the first pump, and transmit 80% of the pump light signal as the second pump light signal to the second pump, the preset rule may also be to divide the pump light signal into two 50% of the pump light signals, and the specific preset rule may be determined according to the actual situation, and is not limited in the embodiment of the present application.
It can be understood that, by using the first erbium ytterbium double-clad fiber to convert the absorbed first pump optical signal into the first waveband optical signal, the first erbium ytterbium double-clad fiber can absorb the pump optical signal together with the erbium particles and the ytterbium particles, so that the erbium particles and the ytterbium particles can transition to the high energy level state, when the erbium particles and the ytterbium particles jump from the high energy level state to the stable state, the first subband optical signal with larger power can be generated, when the erbium particles and the ytterbium particles in the high energy level state can jump to different energy levels, the erbium ytterbium double-clad fiber can generate the optical signal with different wavebands, the bandwidth of the first subband optical signal is increased, when the second erbium ytterbium double-clad fiber absorbs the second pump optical signal, more optical signals with the same waveband range as that of the first subband optical signal can be generated according to the received waveband optical signal of the second erbium ytterbium double-clad fiber, the output power of the first sub-band optical signal is increased.
Example two
An embodiment of the present application provides an optical signal output method, applied to an optical signal output apparatus, as shown in fig. 3, the method includes:
and S101, emitting a first pump light signal and a second pump light signal.
The optical signal output device provided by the embodiment of the application is suitable for a scene of generating an ASE optical signal of an L-band optical signal by utilizing an ASE spectrum of a rare earth element-doped optical fiber.
In this embodiment, after the optical signal output device is started, the optical signal output device generates a pump optical signal, and the optical signal output device converts the generated pump optical signal into a first pump optical signal and a second pump optical signal according to a preset rule and emits the first pump optical signal and the second pump optical signal.
The preset rule may be a conversion rule of the pump light signal.
For example, the preset rule may be to divide the pump light signal into 20% of the pump light signal and 80% of the pump light signal, if the preset rule is to divide the pump light signal into 20% of the pump light signal and 80% of the pump light signal, the 20% of the pump light signal may be set as the first pump light signal, and the 80% of the pump light signal may be set as the second pump light signal, and the preset rule may also be to divide the pump light signal into two parts of 50% of the pump light signal, and the specific preset rule may be determined according to the actual application, which is not limited in this embodiment of the application.
The first pump optical signal and the second pump optical signal are pump optical signals having the same wavelength. If the wavelength of the first pump optical signal is 940nm, the wavelength of the second pump optical signal is also 940 nm.
S102, converting the first pump optical signal into a first wave band optical signal.
In this embodiment, the first erbium-ytterbium double-clad fiber is disposed in the optical signal output device, and when the first pump optical signal is acquired by the optical signal output device, the first pump optical signal is absorbed by the first erbium-ytterbium double-clad fiber to form a spontaneous radiation, the erbium-ytterbium particle in the erbium-ytterbium double-clad fiber undergoes a transition to reach a high energy level state, and because the high energy level state is an unstable state energy level, the erbium-ytterbium particle jumps from the high energy level state to a stable low energy level state to release energy to form a spontaneous radiation, thereby generating the first wavelength band optical signal.
It should be noted that the optical signal in the first wavelength band is an optical signal with a wider wavelength band range, for example, the optical signal in the first wavelength band may be an optical signal with a wavelength band range of 1528 and 1621 nm.
Illustratively, the wavelength of the first pump optical signal may be 940nm, and the wavelength range of the first band optical signal may be 1528 and 1621nm, so that after the optical signal output device absorbs the first pump optical signal with the wavelength of 940nm, a spontaneous emission is formed, and the first pump optical signal with the wavelength of 940nm is converted into the first band optical signal with the wavelength range of 1528 and 1621 nm.
S103, converting the second pump optical signal into a first target waveband optical signal with the same wavelength as the first subband optical signal according to the wavelength range of the first subband optical signal, wherein the first subband optical signal is an optical signal in a partial waveband of the first waveband optical signal.
In this embodiment, the optical signal output apparatus is further provided with a second erbium-ytterbium double-clad fiber, when the optical signal output apparatus acquires the second pump optical signal, the second erbium-ytterbium double-clad fiber absorbs the second pump optical signal, so that the erbium-ytterbium particles in the second erbium-ytterbium double-clad fiber transition to a high energy level state, and due to the high energy level state being an unstable state energy level, when the erbium-ytterbium particles jump from the high energy level state to a stable low energy level state, energy is released, when the optical signal output apparatus receives the first sub-band optical signal, excited radiation is formed, and according to the wavelength range of the received first sub-band optical signal, an optical signal having the same wavelength range as that of the first sub-band optical signal, that is, a first target band optical signal, is generated, and the first target band optical signal and the first sub-band optical signal are output.
It should be noted that the first sub-band optical signal is an optical signal in a partial band in the first band optical signal; the first target waveband optical signal is an optical signal with the same waveband range as the first sub-waveband optical signal.
Illustratively, the wavelength range of the first sub-band optical signal may be 1528-.
And S104, outputting the first target waveband optical signal and the first sub-waveband optical signal.
In the embodiment of the present application, when the optical signal output device obtains the first target wavelength band optical signal and the first sub-wavelength band optical signal, the optical signal output device outputs the first target wavelength band optical signal and the first sub-wavelength band optical signal.
In the embodiment of the present application, after step S102, a process of processing, by an optical signal output apparatus, a second sub-band optical signal in an optical signal in a first band of wavelengths is specifically implemented as shown in fig. 4, and includes:
s105, converting a second sub-waveband optical signal in the first waveband optical signal into a first preset waveband optical signal, wherein the second sub-waveband optical signal is an optical signal except the first sub-waveband optical signal in the first waveband optical signal, and the first preset waveband optical signal is an optical signal with the same wavelength as the first sub-waveband optical signal.
In the embodiment of the present application, an erbium-doped fiber is disposed in the optical signal output apparatus, and when the optical signal output apparatus generates the first wavelength band optical signal, the length of the erbium-doped fiber is utilized to convert the second sub-wavelength band optical signal in the first wavelength band optical signal into the first predetermined wavelength band optical signal.
It should be noted that the first optical signal in the predetermined wavelength band and the first optical signal in the sub-wavelength band have the same wavelength.
It should be noted that the length of the erbium-doped fiber affects the conversion result of the second sub-band optical signal, and the length of the erbium-doped fiber can be set to convert the second sub-band optical signal into the first predetermined band optical signal.
Illustratively, when the length of the erbium-doped fiber is 16.5m, the erbium-doped fiber can convert the optical signal with the waveband range of 1528-.
And S106, outputting the optical signal of the first preset waveband.
In the embodiment of the present application, when the optical signal output device obtains the optical signal in the first predetermined wavelength band, the optical signal output device outputs the optical signal in the first predetermined wavelength band.
It can be understood that, by converting the first pump optical signal into the first wavelength band optical signal including the first sub-wavelength band optical signal, when the optical signal output device receives the second pump optical signal, the second pump optical signal can be converted into the optical signal with the same wavelength band range as that of the first sub-wavelength band optical signal according to the wavelength band range of the first sub-wavelength band optical signal, so as to improve the output power of the first sub-wavelength band optical signal.
The present embodiment provides a storage medium on which a computer program is stored, where the computer-readable storage medium stores one or more programs, where the one or more programs are executable by one or more processors and applied to an optical signal output apparatus, and the computer program implements the optical signal output method according to embodiment two.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. An optical signal output apparatus, characterized in that the apparatus comprises:
a laser transmitter;
the first pump and the second pump are connected with the laser emitter, the first pump comprises a first erbium-ytterbium double-clad fiber, and the second pump comprises a second erbium-ytterbium double-clad fiber;
an optical converter connected to the first pump and the second pump; the input end of the optical converter is connected with the output end of the first pump through a first optical isolator, and the output end of the optical converter is connected with the input end of the second pump through a second optical isolator;
the laser transmitter is used for transmitting a first pump light signal and a second pump light signal; and transmitting the first pump optical signal to the first pump; transmitting the second pump optical signal to the second pump;
the first pump is configured to absorb the first pump optical signal by using the first erbium ytterbium double-clad fiber, convert the first pump optical signal into a first wavelength band optical signal, and transmit the first wavelength band optical signal to the first optical isolator;
the first optical isolator is used for transmitting the first waveband optical signal to the optical converter in a single direction;
the optical converter is used for converting a second sub-waveband optical signal in the first waveband optical signal into a first preset waveband optical signal; transmitting a first sub-waveband optical signal and the first preset waveband optical signal to the second optical isolator, wherein the first sub-waveband optical signal is an optical signal in a partial waveband in the first waveband optical signal; the second sub-band optical signal is an optical signal except the first sub-band optical signal in the first band optical signal; the first optical signal with the preset waveband is an optical signal with the same wavelength as the first optical signal with the sub-waveband;
the second optical isolator is used for unidirectionally transmitting the first preset waveband optical signal and the first sub-waveband optical signal to the input end of the second pump;
the second pump is configured to absorb the second pump optical signal with the second erbium ytterbium double-clad fiber, convert the second pump optical signal into a first target waveband optical signal having the same wavelength as the first subband optical signal according to the wavelength range of the first subband optical signal, and output the first target waveband optical signal, the first preset waveband optical signal, and the first subband optical signal.
2. The apparatus of claim 1, wherein the light converter comprises: a gain flattening filter and a first erbium-doped fiber;
the input end of the first erbium-doped fiber is connected with the output end of the first optical isolator, the output end of the first erbium-doped fiber is connected with the input end of the gain flattening filter, and the output end of the gain flattening filter is connected with the input end of the second optical isolator;
the first erbium-doped fiber is configured to convert the second sub-band optical signal into the first preset-band optical signal according to the length of the first erbium-doped fiber, and transmit the first preset-band optical signal and the first sub-band optical signal to the gain flattening filter;
the gain flattening filter is used for filtering a first sub-waveband optical signal and an optical signal of which the gain does not meet the preset gain in the first preset waveband optical signal, and transmitting the first sub-waveband optical signal and the first preset waveband optical signal to the second optical isolator.
3. The apparatus of claim 1, wherein the first pump further comprises: the first erbium ytterbium double-clad optical fiber is connected with the first erbium ytterbium double-clad optical fiber; a reflector connected with the first beam combiner; the first beam combiner comprises a first pumping end;
the reflecting mirror is connected with the input end of the first beam combiner; the output end of the first combiner is connected with the input end of the first erbium-ytterbium double-clad fiber; the first pumping end is connected with a first output end of the laser transmitter;
the first combiner is configured to transmit the first pump light signal to the first erbium-ytterbium double-clad fiber through the first pump end;
the first erbium ytterbium double-clad fiber is further configured to absorb a first sub-pump optical signal and convert the first sub-pump optical signal into the first waveband optical signal, where the first waveband optical signal includes a first optical signal and a second optical signal; transmitting the first optical signal to the mirror through the first beam combiner, and transmitting the first sub-band optical signal in the second optical signal to the second pump; when the first optical signal reflected by the reflector is received, a second sub-pump optical signal is absorbed, and the second sub-pump optical signal is converted into a third optical signal according to the wavelength range of the first optical signal; transmitting the first sub-band optical signals in the third optical signals to the second pump; the third optical signal is an optical signal with the same wavelength as the first waveband optical signal; the first pump optical signal includes: the first sub pump optical signal and the second sub pump optical signal;
the reflector is configured to reflect the first optical signal, and transmit the reflected first optical signal to the first erbium ytterbium double-clad fiber through the first beam combiner.
4. The apparatus of claim 1, wherein the second pump further comprises: the second erbium ytterbium double-clad fiber is connected with the second erbium ytterbium double-clad fiber, and the second combiner comprises a second pumping end;
the output end of the second erbium ytterbium double-clad fiber is connected with the input end of the second beam combiner; the second pumping end is connected with a second output end of the laser transmitter;
the second combiner is configured to transmit the second pump light signal to the second erbium ytterbium double-clad fiber through the second pump end;
the second erbium ytterbium double-clad fiber is configured to absorb the second pump optical signal, convert the second pump optical signal into a first target waveband optical signal having the same wavelength as the first subband optical signal according to the wavelength range of the first subband optical signal, and combine the first target waveband optical signal, the first subband optical signal, and the first preset waveband optical signal into an optical signal to be output through the second combiner.
5. The apparatus of claim 4, further comprising: the second erbium-doped fiber is connected with the second beam combiner, and the second beam combiner is connected with the second erbium-doped fiber through a third optical isolator;
the second erbium ytterbium double-clad fiber is further configured to absorb the second pump light signal and convert the second pump light signal into a second band light signal; the second waveband optical signal is an optical signal with the same wavelength as the first waveband optical signal;
the third optical isolator is used for unidirectionally transmitting the second waveband optical signal and the optical signal to be output to the second erbium-doped optical fiber;
the second erbium-doped optical fiber is configured to convert a fourth sub-band optical signal in the second band optical signal into a second preset band optical signal according to the length of the second erbium-doped optical fiber, add the second preset band optical signal and an optical signal, except the fourth sub-band optical signal, in the second band optical signal to the optical signal to be output, and output the optical signal to be output in a single direction.
6. The apparatus of claim 1, wherein the laser transmitter comprises: the multimode pump laser transmitter comprises a multimode pump laser transmitter and a multimode coupler;
wherein the output end of the multimode pump laser transmitter is connected with the input end of the multimode coupler; the output end of the multimode coupler is connected with the first pump and the second pump;
the multimode pump laser transmitter is used for transmitting a pump light signal;
the multimode coupler is used for dividing the pump optical signal into a first pump optical signal and a second pump optical signal; and transmitting the first pump optical signal to the first pump and the second pump optical signal to the second pump.
7. A method for outputting an optical signal, the method comprising:
emitting a first pump light signal and a second pump light signal;
converting the first pump optical signal into a first waveband optical signal; converting the second pump optical signal into a first target waveband optical signal with the same wavelength as the first waveband optical signal according to the wavelength range of the first waveband optical signal, wherein the first waveband optical signal is an optical signal in a partial waveband in the first waveband optical signal;
converting a second sub-waveband optical signal in the first waveband optical signal into a first preset waveband optical signal, wherein the second sub-waveband optical signal is an optical signal except the first sub-waveband optical signal in the first waveband optical signal, and the first preset waveband optical signal is an optical signal with the same wavelength as the first sub-waveband optical signal;
and outputting the first target waveband optical signal, the first preset waveband optical signal and the first sub-waveband optical signal.
8. A storage medium having stored thereon a computer program for use in an optical signal output apparatus, wherein the computer program when executed by a processor implements the method of claim 7.
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| CN105390913A (en) * | 2015-12-22 | 2016-03-09 | 天津大学 | Erbium-ytterbium co-doped fiber amplifier provided with auxiliary cavity for pumping |
| CN109473862A (en) * | 2018-11-13 | 2019-03-15 | 武汉光迅科技股份有限公司 | A kind of L-band fiber amplifier of balanced pumping |
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| US6507429B1 (en) * | 1999-08-26 | 2003-01-14 | Agere Systems Inc. | Article comprising a high power/broad spectrum superfluorescent fiber radiation source |
| BR0004521A (en) * | 1999-09-29 | 2001-04-17 | Optical Technologies Usa Corp | Optical transmission system, optical signal amplification process, and optical amplification unit |
| US6744947B2 (en) * | 2001-09-28 | 2004-06-01 | The United States Of America As Represented By The Secretary Of The Navy | High power, low noise, fluorescent device and methods related thereto |
| CN102340353B (en) * | 2011-07-22 | 2015-09-02 | 浙江省广电科技股份有限公司 | There is the External Modulation Optical Transmitter of the 2.6GHz bandwidth of high-output power |
| CN105140762B (en) * | 2015-07-30 | 2018-12-07 | 深圳市欧凌镭射科技有限公司 | A kind of pulse optical fiber of semiconductor laser seed source |
| US9620924B1 (en) * | 2016-02-05 | 2017-04-11 | Bae Systems Information And Electronic Systems Integration Inc. | Reduction of Yb-to-Er bottlenecking in co-doped fiber laser amplifiers |
| CN106532416B (en) * | 2016-12-31 | 2023-10-03 | 浙江师范大学 | High-power long-band all-fiber single-frequency laser structure |
| CN109103736B (en) * | 2018-10-31 | 2024-04-09 | 深圳技术大学 | High-power broadband full-optical fiber medium-infrared super-fluorescent light source |
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| CN105390913A (en) * | 2015-12-22 | 2016-03-09 | 天津大学 | Erbium-ytterbium co-doped fiber amplifier provided with auxiliary cavity for pumping |
| CN109473862A (en) * | 2018-11-13 | 2019-03-15 | 武汉光迅科技股份有限公司 | A kind of L-band fiber amplifier of balanced pumping |
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