CN102637990A - Optical fiber amplifying system and optical fiber amplifying method - Google Patents
Optical fiber amplifying system and optical fiber amplifying method Download PDFInfo
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- CN102637990A CN102637990A CN2012101255348A CN201210125534A CN102637990A CN 102637990 A CN102637990 A CN 102637990A CN 2012101255348 A CN2012101255348 A CN 2012101255348A CN 201210125534 A CN201210125534 A CN 201210125534A CN 102637990 A CN102637990 A CN 102637990A
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Abstract
The invention relates to an optical fiber amplifying system and an optical fiber amplifying method. The system comprises a superradiance light emitting diode (LED), a coupler, an isolator and an optical fiber amplifier; the superradiance LED is used for outputting laser, the coupler is connected with an output end of the superradiance LED and is used for coupling the laser to the isolator; the isolator is connected between the coupler and the optical fiber amplifier and is used for preventing the laser that enters the optical fiber amplifier from feeding back to enter the superradiance LED; and the optical fiber amplifier is used for amplifying the laser. According to the invention, the superradiance LED is used as a seed source so as to effectively restrain relaxation oscillation on one hand and effectively restrain SBS (stimulated brillouin scattering) nonlinear effect on the other hand due to wider output light spectrum of the superradiance LED, so that the optical fiber amplifier can be ensured to work safely and stably.
Description
Technical field
The present invention relates to laser technology field, particularly a kind of optical fiber amplification system and optical fiber amplifying method thereof.
Background technology
Fiber laser has many-sided advantages such as excellent beam quality, high power and power density, simple thermal control management, high stability and reliability and receives much concern because of it, and in the extensive use of a plurality of fields.In practical application, fiber laser had both needed continuously long-time output, also needed the modulation output of short pulse.And the mode that existing fiber laser adopts the master control vibration to amplify usually obtains high power output, and the master control oscillation source generally adopts semiconductor laser or optical-fiber laser seed.
If adopt semiconductor laser as seed source, can drive semiconductor laser through direct modulated current and form pulse laser output, paired pulses laser amplifies then.According to finding the solution Tuker R S etc. in " (High-frequency characteristics of directly modulated InGaAsP ridge waveguide and buried hetero structure lasers " (Lightwave Technology, 1984; 2 (4): the semiconductor laser rate equation that 385～393) proposes, can find that there is the relaxation oscillation characteristic in semiconductor laser, referring to Fig. 1, shown in Figure 1ly be the semiconductor laser output characteristic curve under the step signal driving.
On the one hand; When ordinary semiconductor laser or main oscillations optical-fiber laser seeds using pulsed drive are modulated; With the relaxation oscillation pulse that pulsewidth is the ns magnitude occurring; When adopting fiber amplifier that this pulse is amplified, this short pulse is owing to the raising of peak power in the amplification process will cause permanent damage to optical fiber.On the other hand, if adopt this narrow spectral bandwidth, the laser of narrow pulse width carries out optical fiber and amplifies, and excites stimulated Brillouin scattering nonlinear effects such as (SBS) easily, produces the superelevation peak power pulses, also can cause permanent damage to optical fiber.
Summary of the invention
The object of the invention is intended to solve at least one of above-mentioned technological deficiency, particularly solves existing optical fiber laser amplifier and in amplification process, produces relaxation oscillation, SBS nonlinear effect, thereby cause the problem of superelevation peak power pulses.
For achieving the above object, one aspect of the present invention provides a kind of optical fiber amplification system, comprising: super-radiance light emitting diode is used to export laser; Coupler is connected with the output of said super-radiance light emitting diode, is used for said laser coupled to isolator; Said isolator is connected between said coupler and the fiber amplifier, is used to stop the laser feedback that gets into said fiber amplifier to inject said super-radiance light emitting diode; With said fiber amplifier, be used for said laser is amplified.
In one embodiment of the invention, said optical fiber amplification system also comprises: driver module, be used for adopting pulsed drive to modulate to said super-radiance light emitting diode, and obtain pulse superradiance output laser.The pulse that can obtain random waveform through the drive current of controlling super-radiance light emitting diode is exported, and the pulse duration and the pulse repetition frequency of may command output laser, has the high characteristics of pulse signal to noise ratio.
In one embodiment of the invention, the pulse duration of said output laser is 0.1ns-50s.
In one embodiment of the invention, the centre wavelength scope of said super-radiance light emitting diode output laser is 660nm-2300nm.
In one embodiment of the invention, the mode of said super-radiance light emitting diode output laser comprises: free space output, monomode fiber output, polarization maintaining optical fibre output.
In one embodiment of the invention, said coupler: adopt discrete lens that the laser with said free space output is coupled; With employing discrete lens or fused fiber splice the laser with said monomode fiber output and polarization maintaining optical fibre output is coupled.
In one embodiment of the invention, said optical fiber amplification system also comprises: filter, be connected between said coupler and the isolator, and be used for the centre wavelength and the pulse duration of said laser are controlled.Through the filter that has certain bandwidth in certain wave-length coverage is set, can control the output spectral width and the shape of superradiance laser.
In one embodiment of the invention, said fiber amplifier comprises: gain fibre; And pump arrangement, be used for injecting pump light to said gain fibre.
In one embodiment of the invention, said gain fibre is a doped fiber, and wherein, the doping way of gain particle on the cross section of said gain fibre comprises: flat-top mixes, flat part mixes, gradual change type mixes.
In one embodiment of the invention, two of said gain fibre end faces carry out the antireflection processing.
In one embodiment of the invention, said antireflection is handled and is comprised that two end faces with said gain fibre are cut into the oblique angle.
In one embodiment of the invention, said pump arrangement injects said pump light to the end face of said gain fibre, perhaps injects said pump light through multiple beam coupling pumping.
In one embodiment of the invention, said pump arrangement injects said pump light to the side of said gain fibre, perhaps injects said pump light through distributed pumping.
The present invention provides a kind of optical fiber amplifying method on the other hand, may further comprise the steps: A. adopts super-radiance light emitting diode to export laser as seed source; B. said laser is coupled through coupler; C. said laser gets into fiber amplifier through said isolator and amplifies.
In one embodiment of the invention, modulate the drive current of said super-radiance light emitting diode, to obtain pulse superradiance output laser through pulsed drive.The pulse that can obtain random waveform through the drive current of controlling super-radiance light emitting diode is exported, and the pulse duration and the pulse repetition frequency of may command output laser, has the high characteristics of pulse signal to noise ratio.
In one embodiment of the invention, the pulse duration of said output laser is 0.1ns-50s.
In one embodiment of the invention, the centre wavelength scope of said super-radiance light emitting diode output laser is 660nm-2300nm.
In one embodiment of the invention, the mode of said super-radiance light emitting diode output laser comprises: free space output, monomode fiber output, polarization maintaining optical fibre output.
In one embodiment of the invention, also comprise after the step B: said laser is carried out Filtering Processing, control with centre wavelength and pulse duration to said laser.Through the filter that has certain bandwidth in certain wave-length coverage is set, can control the output spectral width and the shape of superradiance laser.
In one embodiment of the invention, said fiber amplifier comprises: gain fibre; And pump arrangement, be used for injecting pump light to said gain fibre.
In one embodiment of the invention, said gain fibre is a doped fiber, and wherein, the doping way of gain particle on the cross section of said gain fibre comprises: flat-top mixes, flat part mixes, gradual change type mixes.
In one embodiment of the invention, two end faces to said gain fibre carry out the antireflection processing.
In one embodiment of the invention, said antireflection is handled and is comprised that two end faces with said gain fibre are cut into the oblique angle.
In one embodiment of the invention, said pump arrangement injects said pump light to the end face of said gain fibre, perhaps injects said pump light through multiple beam coupling pumping.
In one embodiment of the invention, said pump arrangement injects said pump light to the side of said gain fibre, perhaps injects said pump light through distributed pumping.
The present invention provides a kind of optical fiber amplification system and optical fiber amplifying method thereof; Through adopting super-radiance light emitting diode as seed source; Can effectively suppress relaxation oscillation on the one hand, on the other hand because super-radiance light emitting diode output spectrum broad can effectively suppress the SBS nonlinear effect; Thereby avoid the generation of high-peak power pulse in the amplification process, guarantee the fiber amplifier safe and stable operation.In addition,, can carry out the broadband and amplify, obtain the laser output of high power, high light beam quality through adopting fiber amplifier as amplification module.And be easy to realize full fiberize, system configuration is simple.
Aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously with easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the semiconductor laser output characteristic curve under the step signal driving;
Fig. 2 is the structural representation of the optical fiber amplification system of the embodiment of the invention;
Fig. 3 is the output characteristic curve of the super-radiance light emitting diode under the step signal of the embodiment of the invention drives;
Fig. 4 is the structural representation of the optical fiber amplification system of the embodiment of the invention;
Fig. 5 is the structural representation of the optical fiber amplification system of the embodiment of the invention;
Fig. 6 is the structural representation of the optical fiber amplification system of the embodiment of the invention;
Fig. 7 is the structural representation of the optical fiber amplification system of the embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, need to prove that only if clear and definite regulation and qualification are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be to be fixedly connected, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly through intermediary, can be the connection of two element internals.For those of ordinary skill in the art, can concrete condition understand above-mentioned term concrete implication in the present invention.
Shown in Figure 2 is the structural representation of the optical fiber amplification system of the embodiment of the invention, and as shown in Figure 2, this optical fiber amplification system comprises: super-radiance light emitting diode 100, coupler 200, isolator 300, fiber amplifier 400.Use superradiation light-emitting diode 100 as seed source; Output pulse superradiance laser; Then through coupler 200 with pulse superradiance laser coupled to isolator 300; Superradiance laser gets into fiber amplifier 400 through isolator 300, after fiber amplifier 400 amplifies, obtains the laser output of the wide spectrum burst pulse of high power.
Output characteristic curve for the super-radiance light emitting diode under the step signal driving shown in Figure 3 can be known from Fig. 3, adopts the lower super-radiance light emitting diode of resonant cavity reflectivity to carry out the optical-fiber laser amplification as seed source and relaxation oscillation can not occur.Particularly, for continuous output services pattern, relaxation oscillation can not appear when start; For the pulse modulation mode of operation, relaxation oscillation can not appear at each modulation rising edge.So, carry out optical-fiber laser with super-radiance light emitting diode as seed source and amplify the high-peak power pulse that the relaxation oscillation introducing can not occur.In addition, because superradiation light-emitting diode output spectrum broad, produce thereby can suppress nonlinear effect such as SBS.Based on above-mentioned two advantages, can guarantee the optical fiber laser amplifier safe and stable operation according to the optical fiber amplification system of the embodiment of the invention.In the present embodiment, the centre wavelength scope of super-radiance light emitting diode 100 output spectrums is 660nm-2300nm, and spectral width reaches as high as more than the 150nm, and power reaches as high as more than the 200mW.The mode of output laser comprises: free space output, monomode fiber output, polarization maintaining optical fibre output.
In embodiments of the present invention, this optical fiber amplification system also comprises driver module 500, is used for adopting pulsed drive to modulate to super-radiance light emitting diode 100, obtains pulse superradiance output laser.The pulse that can obtain random waveform through the drive current of controlling super-radiance light emitting diode is exported, and the pulse duration and the pulse repetition frequency of may command output laser, has the high characteristics of pulse signal to noise ratio.Wherein, the pulse duration of driver module 500 modulation super-radiance light emitting diodes 100 output laser is 0.1ns-50s.
In embodiments of the present invention, coupler 200 is used for laser coupled to the isolator 300 with 100 outputs of superradiation light-emitting diode.Super-radiance light emitting diode 100 for free space output can adopt discrete lens will export laser coupled to isolator 300; Super-radiance light emitting diode 100 for optical fiber output (comprising monomode fiber output and polarization maintaining optical fibre output) both can adopt discrete lens will export laser coupled to isolator 300; Also can adopt the form of fused fiber splice, with the input of the direct welding of output optical fibre at isolator 300.What need explanation is that for latter instance, coupler 200 is presented as this physics mode of fused fiber splice.
In embodiments of the present invention, this optical fiber amplification system can also comprise filter 600.Filter 600 is connected between coupler 200 and the isolator 300, is used for the centre wavelength and the pulse duration of laser are controlled.Through the filter that has certain bandwidth in certain wave-length coverage is set, can control the output spectral width and the shape of superradiance laser, promptly control and select the suitable centre wavelength and the laser of bandwidth to amplify.Be pointed out that filter 600 is optional parts of system, adds when needing filtering, can remove when not needing filtering.And for the system that is provided with filter 600, the discrete lens of coupler 200 will be exported laser coupled to filter 600, perhaps with the input of the direct welding of output optical fibre at filter 600.Filter 600 can be band pass filter or GFF (GFF).Wherein, band pass filter is to have a kind of in interfere type filter, optical fiber filter and the fiber grating of special spectrum bandwidth.The spectral characteristic of GFF is opposite with the spectral characteristic of light source; The transmitance that is filter is with wavelength shift; The transmitance that the wavelength signals that gains bigger is corresponding less; Otherwise then corresponding bigger transmitance, thus make the signal of different wave length after filters, reach gain balance, obtain smooth spectrum.
In embodiments of the present invention; Go into super-radiance light emitting diode 200 in order to stop the laser feedback of injecting fiber amplifier 400; Be provided with isolator 300 between super-radiance light emitting diode 200 and the fiber amplifier 400, thereby the feedback light that can prevent fiber amplifier 400 exerts an influence to the output of super-radiance light emitting diode 200.
In embodiments of the present invention, fiber amplifier 400 comprises: gain fibre and pump arrangement, and wherein, gain fibre is used for as gain media, and pump arrangement is used for injecting pump light to gain fibre.In one embodiment of the invention, pump arrangement injects pump light to the end face of gain fibre, i.e. end pumping mode, and alternatively, the end pumping mode can replace with the multiple beam pump mode that is coupled.In another embodiment of the present invention, pump arrangement injects pump light to the side of gain fibre, i.e. profile pump mode, and the profile pump mode can use distributed pump mode to replace.
Gain fibre can be doped fiber, and wherein, the doping way of gain particle on the cross section of gain fibre comprises: flat-top mixes, flat part mixes, gradual change type mixes.Gain fibre can be non-polarization maintaining optical fibre or polarization maintaining optical fibre.In the preferred embodiment of the invention, two end faces of gain fibre carry out antireflection to be handled.For example end face is cut into the oblique angle,, increases laser transmittance to reduce reflection.Fiber amplifier 400 can be that one-level is amplified or multistage structure for amplifying.
Further describe optical fiber amplification system of the present invention through four concrete embodiment below.
Embodiment one: the direct optical fiber of full optical fiber super-radiance light emitting diode amplifies
Shown in Figure 4 is the structural representation of the optical fiber amplification system of the embodiment of the invention.As shown in Figure 4, the way of output of super-radiance light emitting diode 100 is monomode fiber output, and the direct welding of this monomode fiber is at the input of isolator 300, and the output of isolator 300 directly and the input optical fibre welding of fiber amplifier 400.The present embodiment reactive filter is not promptly controlled spectrum.
Embodiment two: full optical fiber super-radiance light emitting diode spectrum is controlled polarization fiber and is amplified
Fig. 5 is the structural representation of the optical fiber amplification system of the embodiment of the invention.As shown in Figure 5; The way of output of super-radiance light emitting diode 100 is polarization maintaining optical fibre output; With the input of the direct welding of this polarization maintaining optical fibre at filter 600; The output of filter 600 directly and the input welding of isolator 300, the inclined to one side gain fibre input of the guarantor welding of the output of isolator 300 and fiber amplifier 400.Present embodiment amplifies output through the output spectrum that bandpass filter selection needs are set.
Embodiment three: full optical fiber super-radiance light emitting diode multi-stage fiber amplifies
Fig. 6 is the structural representation of the optical fiber amplification system of the embodiment of the invention.As shown in Figure 6; The way of output of super-radiance light emitting diode 100 is monomode fiber output; The direct welding of this monomode fiber is at the input of filter 600, the output of filter 600 directly with the input welding of isolator 300, fiber amplifier 400 comprises predispersed fiber amplifying stage 402 and optical fiber master amplifying stage 404; The input optical fibre welding of the output of isolator 300 and predispersed fiber amplifying stage 402, the welding optic fibre master amplifying stage 404 in the rear end of predispersed fiber amplifying stage 402.
Embodiment five: discrete coupling super-radiance light emitting diode multi-stage fiber amplifies
Fig. 7 is the structural representation of the optical fiber amplification system of the embodiment of the invention.As shown in Figure 7; The way of output of super-radiance light emitting diode 100 is free space output; Coupler 200 is a discrete lens; The laser coupled that promptly adopts the discrete mode that is coupled of optical element that super-radiance light emitting diode 100 is exported arrives the input of filter 600, and the output of filter 600 directly is connected with the input of isolator 300, and fiber amplifier 400 comprises predispersed fiber amplifying stage 402 and optical fiber master amplifying stage 404; The input optical fibre welding of the output of isolator 300 and predispersed fiber amplifying stage 402, the welding optic fibre master amplifying stage 404 in the rear end of predispersed fiber amplifying stage 402.
The present invention further provides a kind of optical fiber amplifying method, may further comprise the steps: A. adopts super-radiance light emitting diode to export laser as seed source; B. laser is coupled through coupler; C. laser amplifies through isolator entering fiber amplifier.
In one embodiment of the invention, through the drive current of pulsed drive modulation super-radiance light emitting diode, to obtain pulse superradiance output laser.The pulse that can obtain random waveform through the drive current of controlling super-radiance light emitting diode is exported, and the pulse duration and the pulse repetition frequency of may command output laser, has the high characteristics of pulse signal to noise ratio.
In one embodiment of the invention, the pulse duration of output laser is 0.1ns-50s.
In one embodiment of the invention, the centre wavelength scope of super-radiance light emitting diode output laser is 660nm-2300nm.
In one embodiment of the invention, the mode of super-radiance light emitting diode output laser comprises: free space output, monomode fiber output, polarization maintaining optical fibre output.
In one embodiment of the invention, also comprise after the step B: laser is carried out Filtering Processing, control with centre wavelength and pulse duration to laser.Through the filter that has certain bandwidth in certain wave-length coverage is set, can control the output spectral width and the shape of superradiance laser.
In one embodiment of the invention, fiber amplifier comprises: gain fibre; And pump arrangement, be used for injecting pump light to gain fibre.
In one embodiment of the invention, gain fibre is a doped fiber, and wherein, the doping way of gain particle on the cross section of gain fibre comprises: flat-top mixes, flat part mixes, gradual change type mixes.
In one embodiment of the invention, two end faces of gain fibre are carried out antireflection handle, for example two end faces with gain fibre are cut into the oblique angle.
In one embodiment of the invention, pump arrangement injects pump light to the end face of gain fibre, perhaps through multiple beam coupling pumping injection pump Pu light.
In one embodiment of the invention, pump arrangement injects pump light to the side of gain fibre, perhaps injects pump light through distributed pumping.
The present invention provides a kind of optical fiber amplification system and optical fiber amplifying method thereof; Through adopting super-radiance light emitting diode as seed source; Can effectively suppress relaxation oscillation on the one hand, on the other hand because super-radiance light emitting diode output spectrum broad can effectively suppress the SBS nonlinear effect; Thereby avoid the generation of high-peak power pulse in the amplification process, guarantee the fiber amplifier safe and stable operation.In addition,, can carry out the broadband and amplify, obtain the laser output of high power, high light beam quality through adopting fiber amplifier as amplification module.And be easy to realize full fiberize, system configuration is simple.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention; For those of ordinary skill in the art; Be appreciated that under the situation that does not break away from principle of the present invention and spirit and can carry out multiple variation, modification, replacement and modification that scope of the present invention is accompanying claims and be equal to and limit to these embodiment.
Claims (21)
1. optical fiber amplification system comprises:
Super-radiance light emitting diode is used to export laser;
Coupler is connected with the output of said super-radiance light emitting diode, is used for said laser coupled to isolator;
Said isolator is connected between said coupler and the fiber amplifier, is used to stop the laser feedback that gets into said fiber amplifier to inject said super-radiance light emitting diode; With
Said fiber amplifier is used for said laser is amplified.
2. optical fiber amplification system as claimed in claim 1 is characterized in that, also comprises: driver module, be used for adopting pulsed drive to modulate to said super-radiance light emitting diode, and obtain pulse superradiance output laser.
3. optical fiber amplification system as claimed in claim 1 is characterized in that, the mode of said super-radiance light emitting diode output laser comprises: free space output, monomode fiber output, polarization maintaining optical fibre output.
4. optical fiber amplification system as claimed in claim 3 is characterized in that, said coupler:
Adopt discrete lens that the laser with said free space output is coupled; With
Adopt discrete lens or fused fiber splice that the laser with said monomode fiber output and polarization maintaining optical fibre output is coupled.
5. optical fiber amplification system as claimed in claim 1 is characterized in that, also comprises: filter, be connected between said coupler and the isolator, and be used for the centre wavelength and the pulse duration of said laser are controlled.
6. optical fiber amplification system as claimed in claim 1 is characterized in that, said fiber amplifier comprises:
Gain fibre; With
Pump arrangement is used for injecting pump light to said gain fibre.
7. optical fiber amplification system as claimed in claim 6 is characterized in that, said gain fibre is a doped fiber, and wherein, the doping way of gain particle on the cross section of said gain fibre comprises: flat-top mixes, flat part mixes, gradual change type mixes.
8. optical fiber amplification system as claimed in claim 6 is characterized in that, two end faces of said gain fibre carry out antireflection to be handled.
9. optical fiber amplification system as claimed in claim 8 is characterized in that, said antireflection is handled and comprised that two end faces with said gain fibre are cut into the oblique angle.
10. optical fiber amplification system as claimed in claim 6 is characterized in that, said pump arrangement injects said pump light to the end face of said gain fibre, perhaps injects said pump light through multiple beam coupling pumping.
11. optical fiber amplification system as claimed in claim 8 is characterized in that said pump arrangement injects said pump light to the side of said gain fibre, perhaps injects said pump light through distributed pumping.
12. an optical fiber amplifying method may further comprise the steps:
A. adopt super-radiance light emitting diode to export laser as seed source;
B. said laser is coupled through coupler;
C. said laser gets into fiber amplifier through said isolator and amplifies.
13. optical fiber amplifying method as claimed in claim 12 is characterized in that, modulates the drive current of said super-radiance light emitting diode through pulsed drive, to obtain pulse superradiance output laser.
14. optical fiber amplifying method as claimed in claim 12 is characterized in that, the mode of said super-radiance light emitting diode output laser comprises: free space output, monomode fiber output, polarization maintaining optical fibre output.
15. optical fiber amplifying method as claimed in claim 12 is characterized in that, also comprises after the step B: said laser is carried out Filtering Processing, control with centre wavelength and pulse duration to said laser.
16. optical fiber amplifying method as claimed in claim 12 is characterized in that, said fiber amplifier comprises:
Gain fibre; With
Pump arrangement is used for injecting pump light to said gain fibre.
17. optical fiber amplifying method as claimed in claim 12 is characterized in that, said gain fibre is a doped fiber, and wherein, the doping way of gain particle on the cross section of said gain fibre comprises: flat-top mixes, flat part mixes, gradual change type mixes.
18. optical fiber amplifying method as claimed in claim 12 is characterized in that, two end faces of said gain fibre is carried out antireflection handle.
19. optical fiber amplification system as claimed in claim 18 is characterized in that, said antireflection is handled and is comprised that two end faces with said gain fibre are cut into the oblique angle.
20. optical fiber amplifying method as claimed in claim 12 is characterized in that, said pump arrangement injects said pump light to the end face of said gain fibre, perhaps injects said pump light through multiple beam coupling pumping.
21. optical fiber amplification system as claimed in claim 12 is characterized in that said pump arrangement injects said pump light to the side of said gain fibre, perhaps injects said pump light through distributed pumping.
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| CN102983483A (en) * | 2012-12-05 | 2013-03-20 | 清华大学 | All-optical fiber laser based on broadband light spectrum |
| CN103001110A (en) * | 2012-12-05 | 2013-03-27 | 清华大学 | Optical fiber laser based on broadband spectrum |
| CN103594912A (en) * | 2013-10-31 | 2014-02-19 | 清华大学 | Super-fluorescence optical fiber source amplifying system |
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| CN110564937A (en) * | 2015-01-09 | 2019-12-13 | Lsp技术有限公司 | Method and apparatus for use in laser shock peening |
| CN105322419A (en) * | 2015-02-16 | 2016-02-10 | 深圳市欧凌镭射科技有限公司 | Pulse fiber laser |
| CN105322419B (en) * | 2015-02-16 | 2018-08-10 | 深圳市欧凌镭射科技有限公司 | A kind of pulse optical fiber |
| CN104733988A (en) * | 2015-03-31 | 2015-06-24 | 深圳市创鑫激光股份有限公司 | MOPA pulse fiber laser based on pulse drive superluminescent diodes |
| CN104733988B (en) * | 2015-03-31 | 2016-03-02 | 深圳市创鑫激光股份有限公司 | Based on the MOPA pulse optical fiber of pulsed drive super-radiance light emitting diode |
| CN111373614A (en) * | 2017-11-24 | 2020-07-03 | 司浦爱激光技术英国有限公司 | Device for providing optical radiation |
| CN110600982A (en) * | 2019-08-14 | 2019-12-20 | 武汉光迅科技股份有限公司 | Remote pumping system capable of improving pumping fiber-entering power |
| WO2021027207A1 (en) * | 2019-08-14 | 2021-02-18 | 武汉光迅科技股份有限公司 | Remote pumping system capable of improving input pumping power |
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Application publication date: 20120815 |