CN107681425A - A kind of fiber amplifier of pump light source and its composition - Google Patents
A kind of fiber amplifier of pump light source and its composition Download PDFInfo
- Publication number
- CN107681425A CN107681425A CN201711106056.5A CN201711106056A CN107681425A CN 107681425 A CN107681425 A CN 107681425A CN 201711106056 A CN201711106056 A CN 201711106056A CN 107681425 A CN107681425 A CN 107681425A
- Authority
- CN
- China
- Prior art keywords
- output end
- pump light
- multimode
- light source
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 56
- 230000003321 amplification Effects 0.000 claims abstract description 45
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 45
- 238000005086 pumping Methods 0.000 claims description 36
- 239000013307 optical fiber Substances 0.000 claims description 24
- KWMNWMQPPKKDII-UHFFFAOYSA-N erbium ytterbium Chemical compound [Er].[Yb] KWMNWMQPPKKDII-UHFFFAOYSA-N 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 229910052691 Erbium Inorganic materials 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
-
- 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
- H01S3/06754—Fibre amplifiers
-
- 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
Abstract
The present invention relates to a kind of fiber amplifier for the pump light source and its composition that can export single mode and multimode light simultaneously.The pump light source, including multimode pump laser, coupler and mode converter；The input of the coupler is connected with the output end of the multimode pump laser, first output end of the coupler is connected with the input of the mode converter, the output end output mode pump light of the mode converter, the second output end output multimode pump light of the coupler.The fiber amplifier includes the pump light source and amplification light path；The amplification light path includes one-level amplification light path and two level amplification light path, and the mode pump light of the pump light source output is connected with one-level amplification light path, and one-level amplification is carried out to flashlight；The multimode pump light of the pump light source output is connected with two level amplification light path, and the flashlight after amplifying to one-level carries out two level amplification.
Description
Technical field
The present invention relates to fiber optical amplifier technology field, more particularly to a kind of pumping that can export single mode and multimode light simultaneously
The amplifier of light source and its composition.
Background technology
Current pump laser, it can only individually export single mode, the pump light of multimode one of which pattern.During single-mode output
It is relatively low using fibre core pumping, pump power；Pump power is larger during multimode output, but can be only applied to the double-contracting of cladding pumping
Layer optical fiber.Mode pump should be generally used in the high-power erbium-doped fiber amplifier of reality, while is also required to use multimode
Pumping.
Conventional high-power erbium-doped fiber amplifier generally includes preamplifier stage and power amplifier level at present, as shown in figure 1,
Preamplifier stage carries out pumping using Er-doped fiber 103 as Active Optical Fiber, using mode pump laser device 108, and pump mode is fibre core
Pumping, flashlight reach wavelength division multiplexer 102, the pump light that mode pump laser device 108 exports by the first optoisolator 101
Wavelength division multiplexer 102 is directly entered, flashlight and coupling pump light are output to the fibre of Er-doped fiber 103 by wavelength division multiplexer 102
In core, pre-amplification is carried out to flashlight；Power amplifier level after preamplifier stage using erbium ytterbium doubly clad optical fiber 106 as Active Optical Fiber,
Pumping is carried out using multimode pump laser 109, pump mode is cladding pumping, and the flashlight of pre-amplification is optically isolated by second
Device 104 reaches pumping coupler 105, and the pump light that multimode pump laser 109 exports is directly entered pumping coupler 105, pump
Pu coupler 105 optically coupling to being transmitted in the fibre core of the erbium ytterbium doubly clad optical fiber 106 of output end, coupling pump light is arrived signal
Transmitted in the covering of the erbium ytterbium doubly clad optical fiber 106 of output end, flashlight is further amplified, and is exported from output end 107.Cause
This, prior art obtains single mode simultaneously and multimode pumping needs to use two independent pump lasers, cause module dissipation compared with
Height, structure is not compact, and cost is high.
The content of the invention
Based on this, it is an object of the present invention to provide a kind of pump light source that can export single mode and multimode light simultaneously and its
The fiber amplifier of composition.
The purpose of the present invention is achieved through the following technical solutions：A kind of pump light source, including multimode pump laser,
Coupler and mode converter；The input of the coupler is connected with the output end of the multimode pump laser, the coupling
First output end of clutch is connected with the input of the mode converter, the output end output single mode pump of the mode converter
Pu light, the second output end output multimode pump light of the coupler.
Relative to prior art, the present invention is by rationally designing, by multimode pump laser, coupler and mode converter
Organically combine, the light of multimode pump laser output is a branch of to be used as multimode pump light by being divided into two beams after the coupler, separately
It is a branch of that mode pump light is converted to by mode converter, only need a multimode pump laser to export simultaneously so as to realize
Single mode and multimode pump light so that the structure of pump light source is compacter, reduces cost, reduces power consumption.
Further, the multimode pump laser includes multimode pumping chip and output tail optical fiber, and the output tail optical fiber is
Doubly clad optical fiber.
Further, the multimode pump laser is 980nm multimode pump lasers.
Further, the splitting ratio of the first output end of the coupler and the second output end is 30/70.
The present invention also provides a kind of fiber amplifier, including pump light source of the present invention and amplification light path；It is described to put
Big light path includes one-level amplification light path and two level amplification light path, mode pump light and the one-level amplification light of the pump light source output
Road is connected, and one-level amplification is carried out to flashlight；The multimode pump light of the pump light source output is connected with two level amplification light path, right
Flashlight after one-level amplification carries out two level amplification.
Relative to prior art, fiber amplifier of the invention can be achieved simultaneously to put two-stage using single pump light source
Big structure carries out pumping, can make up the deficiency of existing structure, overcome existing structure power consumption is big, pumping utilization rate is low, structure not
It is enough compact, and pump laser causes to drive and control the problem of complicated more using species.
Further, the one-level amplification light path includes the first optoisolator, wavelength division multiplexer and Er-doped fiber；Described two
Level amplification light path includes the second optoisolator, bundling device and double clad erbium-ytterbium co-doped fiber；The signal of the wavelength division multiplexer is defeated
Enter end with the output end of first optoisolator to be connected, pumping input and the mode converter of the wavelength division multiplexer
Output end be connected, the output end of the wavelength division multiplexer is connected with the input of the Er-doped fiber；Described second is optically isolated
The input of device is connected with the output end of Er-doped fiber；The signal input part of the bundling device is defeated with second optoisolator
Go out end to be connected, the pumping input of the bundling device is connected with the second output end of the coupler, the output of the bundling device
End is connected with the input of the double clad erbium-ytterbium co-doped fiber.
Further, the fiber amplifier also includes the 3rd optoisolator, the input of the 3rd optoisolator with
The output end of double clad erbium-ytterbium co-doped fiber is connected.
Further, the wavelength division multiplexer is 980/1550 wavelength division multiplexer.
Further, the signal input part of the bundling device is single-mode fiber, and pumping input is multimode fibre, output end
For doubly clad optical fiber.
In order to more fully understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Brief description of the drawings
Fig. 1 is the structural representation of existing fiber amplifier.
Fig. 2 is the structural representation of the pump light source of embodiment.
Fig. 3 is the structural representation of the fiber amplifier of embodiment.
Embodiment
Please refer to Fig. 2-3, Fig. 2 is the structural representation of the pump light source of the present embodiment, and Fig. 3 is the optical fiber of embodiment
The structural representation of amplifier.
The pump light source 200 of the present embodiment includes multimode pump laser 210, coupler 220 and mode converter 230,
The input of the coupler 220 is connected with the output end of the multimode pump laser 210, and the first of the coupler 220
Output end is connected with the input of the mode converter 230, the output end output mode pump of the mode converter 230
Light, the second output end output multimode pump light of the coupler 220.
Specifically, the multimode pump laser 210 is 980nm multimode pump lasers, it includes multimode pumping chip
211 and output tail optical fiber 212, it is described output tail optical fiber 212 be doubly clad optical fiber；The coupler 220 is insensitive to pattern, and it first
The splitting ratio of output end and the second output end is 30/70；Multimode pump light can be converted to single mode by the mode converter 230
Pump light.So as to, two beams are divided into by coupler after tail optical fiber output, it is a branch of to be coupled into multimode fibre, it is another as multimode pumping
Multimode light in covering is converted to single-mode optics by mode converter and is coupled into single-mode fiber by beam, as mode pump.
The pump light that mode converter is transmitted for script by fibre core does not have any influence, the pump light of the part can direct-coupling enter list
Mode fiber.
The fiber amplifier of the present embodiment includes pump light source 200 and amplification light path 300, and the amplification light path 300 includes
One-level amplifies light path and two level amplification light path, and the mode pump light that the pump light source 200 exports is connected with one-level amplification light path,
One-level amplification is carried out to flashlight；The multimode pump light that the pump light source 200 exports is connected with two level amplification light path, to one-level
Flashlight after amplification carries out two level amplification.
Specifically, the one-level amplification light path includes the first optoisolator 311, wavelength division multiplexer 312 and Er-doped fiber
313；The two level amplification light path includes the second optoisolator 321, bundling device 322 and double clad erbium-ytterbium co-doped fiber 323；It is described
The signal input part of wavelength division multiplexer 312 is connected with the output end of first optoisolator 311, the wavelength division multiplexer 312
Pumping input be connected with the output end of the mode converter 230, the output end of the wavelength division multiplexer 312 is mixed with described
The input of erbium optical fiber 313 is connected；The input of second optoisolator 321 is connected with the output end of Er-doped fiber 313；Institute
The signal input part for stating bundling device 322 is connected with the output end of second optoisolator 321, the pumping of the bundling device 322
Input is connected with the second output end of the coupler 220, and the output end of the bundling device 322 is total to the double clad erbium ytterbium
The input for mixing optical fiber 323 is connected.
Specifically, the fiber amplifier also includes the 3rd optoisolator 400, the input of the 3rd optoisolator 400
End is connected with the output end of double clad erbium-ytterbium co-doped fiber 323.
In the present embodiment, coupler 220 is 30/70 coupler；Wavelength division multiplexer 312 is 980/1550 wavelength division multiplexer；
The signal input part of bundling device 322 is common G.652 optical fiber, and pumping input is 105/125 multimode fibre, output end ofs
8/125 doubly clad optical fiber, the device is injected into double clad erbium after single mode signal light and multimode pump light being carried out into conjunction beam
Ytterbium co-doped fiber 323；Double clad erbium-ytterbium co-doped fiber 323 is ofs 7/125 double clad erbium-ytterbium co-doped fiber.
The specific connected mode and operation principle of the present embodiment are as follows：
The multimode pump light that 980nm multimodes pump laser 210 exports is divided into two-way after 30/70 coupler 220, and one
Road power is 30% that pumping always exports, and another way power is 70% that pumping always exports；The 30% of 30/70 coupler 220 is defeated
Exit port is connected with mode converter 230, and mode pump is used as after the conversion of mode converter 230；30/70 coupler 220
70% output port is as multimode pumping.
The flashlight that wavelength is 1550nm, power is 0~10mW inputs via optical patchcord A, by the first optoisolator
311, it is connected with 1550 ports of 980/1550 wavelength division multiplexer 312；Meanwhile the output end of mode converter 230 and 980/
The 980 ports connection of 1550 wavelength division multiplexers 312；So as to which 980/1550 wavelength division multiplexer 312 is by 1550nm flashlights and through mould
980nm mode pumps light after formula converter 230 is changed is input in fibre core pumping mono-mode Er-doped fiber 313 together, and 980nm is mono-
Mould pump light carries out pre-amplification as pumping to 1550nm flashlights, and the power of the flashlight after pre-amplification is 20~30mW.
Flashlight after pre-amplification enters the signal input part of bundling device 322 by the second optoisolator 321；Meanwhile
70% output port of 30/70 coupler 220 is connected with the pumping input of bundling device 322；So as to which bundling device 322 will be put in advance
1050nm flashlights after big and the 980nm multimode pump lights of the 70% output port output through 30/70 coupler 220 are closed
It is injected into after beam in double clad erbium-ytterbium co-doped fiber 323,980nm multimodes pump light enters to advance as pumping to 1550nm flashlights
One step is amplified；Further 1550 flashlights after amplification export from the 3rd optoisolator 400, and finally the flashlight after amplification is defeated
It is 5~10W to go out power.
Relative to prior art, the present invention organically combines multimode pump laser, coupler and mode converter, can be with
Realizing only needs a multimode pump laser to export single mode and multimode pump light simultaneously, and uses single pump light source
Realize and pumping is carried out to two-stage structure for amplifying simultaneously, the deficiency of existing structure can be made up, overcome that existing structure power consumption is big, pumping
Utilization rate is low, structure is not compact enough, and pump laser causes to drive and control the problem of complicated more using species.
Embodiment described above only expresses one embodiment of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.
Claims (9)
- A kind of 1. pump light source, it is characterised in that：Including multimode pump laser, coupler and mode converter；The coupling The input of device is connected with the output end of the multimode pump laser, and the first output end and the pattern of the coupler become The input of parallel operation is connected, the output end output mode pump light of the mode converter, the second output end of the coupler Export multimode pump light.
- 2. pump light source according to claim 1, it is characterised in that：The multimode pump laser includes multimode pumping core Piece and output tail optical fiber, the output tail optical fiber is doubly clad optical fiber.
- 3. pump light source according to claim 1, it is characterised in that：The multimode pump laser is 980nm multi-mode pumps Pu laser.
- 4. pump light source according to claim 1, it is characterised in that：First output end of the coupler and the second output The splitting ratio at end is 30/70.
- A kind of 5. fiber amplifier, it is characterised in that：Including pump light source and amplification light path；The pump light source is claim The pump light source described in any claim in 1-4；The amplification light path includes one-level amplification light path and two level amplification light path, The mode pump light of the pump light source output is connected with one-level amplification light path, and one-level amplification is carried out to flashlight；The pumping The multimode pump light of light source output is connected with two level amplification light path, and the flashlight after amplifying to one-level carries out two level amplification.
- 6. fiber amplifier according to claim 5, it is characterised in that：It is optically isolated that the one-level amplification light path includes first Device, wavelength division multiplexer and Er-doped fiber；The two level amplification light path is total to including the second optoisolator, bundling device and double clad erbium ytterbium Mix optical fiber；The signal input part of the wavelength division multiplexer is connected with the output end of first optoisolator, the wavelength-division multiplex The pumping input of device is connected with the output end of the mode converter, the output end of the wavelength division multiplexer and the er-doped light Fine input is connected；The input of second optoisolator is connected with the output end of Er-doped fiber；The letter of the bundling device Number input is connected with the output end of second optoisolator, and the of the pumping input of the bundling device and the coupler Two output ends are connected, and the output end of the bundling device is connected with the input of the double clad erbium-ytterbium co-doped fiber.
- 7. fiber amplifier according to claim 6, it is characterised in that：It is optically isolated that the fiber amplifier also includes the 3rd Device, the input of the 3rd optoisolator are connected with the output end of double clad erbium-ytterbium co-doped fiber.
- 8. fiber amplifier according to claim 6, it is characterised in that：The wavelength division multiplexer is that 980/1550 wavelength-division is answered Use device.
- 9. fiber amplifier according to claim 6, it is characterised in that：The signal input part of the bundling device is single-mode optics Fibre, pumping input are multimode fibre, and output end is doubly clad optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711106056.5A CN107681425A (en) | 2017-11-10 | 2017-11-10 | A kind of fiber amplifier of pump light source and its composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711106056.5A CN107681425A (en) | 2017-11-10 | 2017-11-10 | A kind of fiber amplifier of pump light source and its composition |
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| Publication Number | Publication Date |
|---|---|
| CN107681425A true CN107681425A (en) | 2018-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711106056.5A Pending CN107681425A (en) | 2017-11-10 | 2017-11-10 | A kind of fiber amplifier of pump light source and its composition |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649415A (en) * | 2018-05-16 | 2018-10-12 | 深圳大学 | A kind of thulium doped optical fiber laser amplifier |
| CN109599740A (en) * | 2019-01-31 | 2019-04-09 | 天津大学 | With the two directional pump double-cladding fiber laser amplifier for inhibiting SBS effect |
| CN110943781A (en) * | 2019-11-27 | 2020-03-31 | 深圳市普威技术有限公司 | Mode conversion equipment for single-mode optical fiber and multimode optical fiber |
| CN111048977A (en) * | 2019-12-26 | 2020-04-21 | 西北核技术研究院 | Dye laser |
| CN111490444A (en) * | 2020-04-08 | 2020-08-04 | 武汉光迅科技股份有限公司 | Pulse optical fiber amplifier and optical signal power amplification method |
| CN112467507A (en) * | 2020-11-25 | 2021-03-09 | 上海拜安实业有限公司 | Multimode Pump EYDFA optical fiber amplifier device |
| WO2023109805A1 (en) * | 2021-12-13 | 2023-06-22 | 华为技术有限公司 | Optical fiber amplifier and method for amplifying optical signal |
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| EP0989638A1 (en) * | 1998-09-22 | 2000-03-29 | PIRELLI CAVI E SISTEMI S.p.A. | Pump device for pumping an actice fiber of an optical amplifier and corresponding optical amplifier |
| WO2002091048A1 (en) * | 2001-04-20 | 2002-11-14 | Huawei Technologies Co., Ltd. | Pumping light source connecting device of er-doped cascade fiber amplifier |
| CN104134924A (en) * | 2014-06-30 | 2014-11-05 | 武汉光迅科技股份有限公司 | EDFA (Erbium-doped Optical Fiber Amplifier) |
| CN107248689A (en) * | 2017-08-10 | 2017-10-13 | 珠海光恒科技有限公司 | A kind of full multimode pumping double-cladding fiber amplifier of high-power narrow line width |
| CN207398577U (en) * | 2017-11-10 | 2018-05-22 | 珠海光恒科技有限公司 | A kind of fiber amplifier of pump light source and its composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0989638A1 (en) * | 1998-09-22 | 2000-03-29 | PIRELLI CAVI E SISTEMI S.p.A. | Pump device for pumping an actice fiber of an optical amplifier and corresponding optical amplifier |
| WO2002091048A1 (en) * | 2001-04-20 | 2002-11-14 | Huawei Technologies Co., Ltd. | Pumping light source connecting device of er-doped cascade fiber amplifier |
| CN104134924A (en) * | 2014-06-30 | 2014-11-05 | 武汉光迅科技股份有限公司 | EDFA (Erbium-doped Optical Fiber Amplifier) |
| CN107248689A (en) * | 2017-08-10 | 2017-10-13 | 珠海光恒科技有限公司 | A kind of full multimode pumping double-cladding fiber amplifier of high-power narrow line width |
| CN207398577U (en) * | 2017-11-10 | 2018-05-22 | 珠海光恒科技有限公司 | A kind of fiber amplifier of pump light source and its composition |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649415A (en) * | 2018-05-16 | 2018-10-12 | 深圳大学 | A kind of thulium doped optical fiber laser amplifier |
| CN108649415B (en) * | 2018-05-16 | 2020-04-03 | 深圳大学 | Thulium-doped optical fiber laser amplifier |
| CN109599740A (en) * | 2019-01-31 | 2019-04-09 | 天津大学 | With the two directional pump double-cladding fiber laser amplifier for inhibiting SBS effect |
| CN110943781A (en) * | 2019-11-27 | 2020-03-31 | 深圳市普威技术有限公司 | Mode conversion equipment for single-mode optical fiber and multimode optical fiber |
| CN110943781B (en) * | 2019-11-27 | 2023-05-16 | 深圳市联洲国际技术有限公司 | Mode conversion equipment of single mode optical fiber and multimode optical fiber |
| CN111048977A (en) * | 2019-12-26 | 2020-04-21 | 西北核技术研究院 | Dye laser |
| CN111490444A (en) * | 2020-04-08 | 2020-08-04 | 武汉光迅科技股份有限公司 | Pulse optical fiber amplifier and optical signal power amplification method |
| CN111490444B (en) * | 2020-04-08 | 2022-07-15 | 武汉光迅科技股份有限公司 | Pulse optical fiber amplifier and optical signal power amplification method |
| CN112467507A (en) * | 2020-11-25 | 2021-03-09 | 上海拜安实业有限公司 | Multimode Pump EYDFA optical fiber amplifier device |
| CN112467507B (en) * | 2020-11-25 | 2022-11-04 | 上海拜安实业有限公司 | Multimode Pump EYDFA optical fiber amplifier device |
| WO2023109805A1 (en) * | 2021-12-13 | 2023-06-22 | 华为技术有限公司 | Optical fiber amplifier and method for amplifying optical signal |
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