CN106226035A - A kind of Yb dosed optical fiber photon darkens test system - Google Patents
A kind of Yb dosed optical fiber photon darkens test system Download PDFInfo
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- CN106226035A CN106226035A CN201610586121.8A CN201610586121A CN106226035A CN 106226035 A CN106226035 A CN 106226035A CN 201610586121 A CN201610586121 A CN 201610586121A CN 106226035 A CN106226035 A CN 106226035A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/33—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
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Abstract
The invention discloses a kind of Yb dosed optical fiber photon and darken test system, system the most effectively detects the photon of Yb dosed optical fiber and darkens effect, provides effectively help for the research of high-dopant concentration Yb dosed optical fiber and the stability of laser application performance.Yb dosed optical fiber photon of the present invention darkens test system and combines Yb dosed optical fiber practical situations in associated laser device, by 1.064 μm near-infrared pumping photoirradiations, causes Yb dosed optical fiber photon to darken effect.By the laser instrument of an output low-power laser as seed source, the laser of seed source output enters pre-amplification stage, signal after pre-amplification then enters main amplifier stage, gain fibre is Yb dosed optical fiber to be measured, tested optical fiber outfan is through cladding mode device for stripping, filter cladding mode, make whole light path system output signal light, output signal beam enters optical power detector after collimating mirror, thus monitor Yb dosed optical fiber and increase and the phenomenon of Output optical power reduction action time with pump light, this phenomenon derives from photon and darkens effect.
Description
Technical field
The invention belongs to measuring techniques for optical fiber field, be specifically related to a kind of Yb dosed optical fiber photon and darken test system, it is possible to
The effectively photon of detection Yb dosed optical fiber darkens effect, instructs the research developing high-dopant concentration Yb dosed optical fiber, simultaneously to high power
The stability of laser application provides effectively help.
Background technology
High power ytterbium-doping optical fiber laser with its high efficiency, high stability, high light beam quality, be prone to high power extension etc.
Advantage, has a wide range of applications in fields such as industrial processes, advanced manufacture, national defence.In practical engineering application, not only want
Ask laser instrument to have higher output, and require that laser instrument keeps good stability and longer service life.?
In ytterbium-doping optical fiber laser, Yb dosed optical fiber is as the gain media of generation laser, and its performance can be described as optical fiber laser power
Promote of paramount importance limiting factor.
In high power fiber laser, it is to affect optical-fiber laser that the photon of Yb dosed optical fiber darkens (Photodarkening)
Device life-span and the key factor of stability.Therefore, it is necessary to mix mirror optical fiber photon darken performance carry out deep study and analysis,
Reduce and even eliminate photon darkening effect, to realize the long-time stability of Yb dosed optical fiber laser activity.
Photon the Opacitization shows as ytterbium-doping optical fiber laser and amplifier output power decay in time the most intuitively.
The photon of Yb dosed optical fiber darkens effect and refers to, in ytterbium-doping optical fiber laser or amplifier, due to the factor such as temperature, illumination, cause
Some performance degradation of Yb dosed optical fiber, thus affect the phenomenon of laser output power and stabilised efficiency.Wherein, photoirradiation is to lead
Cause one of key factor of photon darkening.The major way that photoirradiation Induced Photon darkens can use ultraviolet light, royal purple light, near
Infrared light induction etc..
Yb-doped double-cladding fiber is one of most important product obtaining high power laser light output at 1 mu m waveband, public at present
The publication No. of exploitation table is CN 102252834A, entitled system for testing photodarkening of gain fiber, uses band tail optical fiber visible ray
630nm-650nm red-light source, by the decline in time of the 633nm HONGGUANG power that detects, effectively detects gain fibre
Photon darken effect.This method can not reflect Yb dosed optical fiber signal in band 1 μm power down phenomenon, Er Qieke intuitively
See light 630nm-650nm red-light source finite energy, it is impossible to the photon under detection higher-wattage darkens effect effectively.
Summary of the invention
It is an object of the invention to provide a kind of Yb dosed optical fiber photon and darken test system, system can the most effectively detect mixes
The photon of ytterbium optical fiber darkens effect, provides effectively for the research of high-dopant concentration Yb dosed optical fiber and the stability of laser application
Help.
Yb dosed optical fiber photon of the present invention darkens test system and combines the Yb dosed optical fiber actual application feelings in associated laser device
Condition, by 1.064 μm near-infrared pumping photoirradiations, causes Yb dosed optical fiber photon to darken effect.The present invention uses function admirable
Small-power 1.064 μm laser instrument injects pre-amplification stage Yb dosed optical fiber and Yb dosed optical fiber to be measured as seed source, seed laser, constitutes
Multistage amplifier system, it is achieved high-energy exports.
To achieve these goals, the invention provides a kind of Yb dosed optical fiber photon and darken test system, this system
By seed source, the first fibre optic isolater, the first pumping source, wavelength division multiplexer, pre-amplification stage Yb dosed optical fiber, the second Fiber isolation
Device, the second pumping source, optical-fiber bundling device, Yb dosed optical fiber to be measured, cladding mode stripper, collimating lens and optical power detector group
Becoming, the laser of wherein said seed source output is by the first fibre optic isolater, with the pump light of the first pumping source output through ripple
Division multiplexer synthesis light beam, transmits along pre-amplification stage optical fiber Yb dosed optical fiber, and output light is through the second fibre optic isolater and the
The pump light of two pumping source outputs is inputted with pumping arm by the signal arm of optical-fiber bundling device respectively, the output light of optical-fiber bundling device
Transmit along Yb dosed optical fiber to be measured, the outfan of Yb dosed optical fiber to be measured and cladding mode stripper welding, cladding mode stripper defeated
Go out light beam and enter optical power detector through collimating lens.
In one embodiment of the present of invention, the output light of described seed source is near infrared light, and wavelength is 1.064 μm, output
Luminous power long-time stability (25 DEG C, 8h) are ± 0.1db, Output optical power short-term stability (25 DEG C, 15min) is ±
0.05db.
In one embodiment of the present of invention, the reddest to 1064nm of described first fibre optic isolater and the second fibre optic isolater
Outer smooth reverse isolation degree is more than 50dB, and forward insertion loss is less than 1.0dB.
In one embodiment of the present of invention, described first pumping source be wavelength be 976nm, power is the quasiconductor of 400mw
Laser instrument.
In one embodiment of the present of invention, described wavelength division multiplexer is 960～990nm/1020～1080nm two wave bands
Wavelength division multiplexer.
In one embodiment of the present of invention, described pre-amplification stage Yb dosed optical fiber be core Bao Jing be 5/125 μm or 7/128 μm or
The high-selenium corn Yb dosed optical fiber of 10/130 μm, depends primarily on the model of Yb dosed optical fiber to be measured, such as, when Yb dosed optical fiber to be measured is
During 10/130 μm optical fiber, pre-amplification stage Yb dosed optical fiber can select 5/125 μm optical fiber；When Yb dosed optical fiber to be measured be 20/130 μm or
When 25/250 μm or 30/250 μm optical fiber, pre-amplification stage Yb dosed optical fiber can select 10/130 μm or 7/128 μm optical fiber.
In one embodiment of the present of invention, described second pumping source be wavelength be the semiconductor laser of 915nm, its power
Select to need the absorbent properties considering Yb dosed optical fiber to be measured and the spontaneous radiation that can produce thereof to transmit in signal optical fibre, when to be measured
When Yb dosed optical fiber is 10/130 μm optical fiber, the semiconductor laser of 10W can be selected；When Yb dosed optical fiber to be measured be 20/130 μm or
When 25/250 μm or 30/250 μm optical fiber, can select the semiconductor laser of 25W, 30W or 50W, power adjustable saves.
In one embodiment of the present of invention, described optical-fiber bundling device is (1+1) × 1 optical-fiber bundling device.
In one embodiment of the present of invention, the centre wavelength of described cladding mode stripper is 1064nm, and output optical fibre is single
Cladded-fiber.
In one embodiment of the present of invention, described system also includes the first pumping protection device and the second pumping protection device, institute
The outfan stating the input of the first pumping protection device and the first pumping source is connected, the input of described second pumping protection device with
The outfan of the second pumping source is connected.
The Yb dosed optical fiber photon that the present invention provides darkens test system, it is possible to effectively detection Yb dosed optical fiber photon darkens effect
Should, it is simple to the photon mixing mirror optical fiber is darkened performance and carries out deep study and analysis, instruct Yb dosed optical fiber manufacturing process further, with
Time to improving ytterbium-doping optical fiber laser output, guaranteeing output stability and reliability and solve in optical fiber laser other
Bottleneck problem is significant.
Accompanying drawing explanation
Fig. 1 is the structural representation that Yb dosed optical fiber photon of the present invention darkens test system；
Fig. 2 is that the photon of the Yb dosed optical fiber that two kinds of different process that the present invention tests out make darkens effect result figure；
Fig. 3 is that the result of the Double Cladding Ytterbium Doped Fiber of one 25/250 tested out darkens to the photon reflecting this root optical fiber
Benefit；
In all of the figs, identical reference is used for representing identical element or structure, wherein:
1-seed source 2-the first fibre optic isolater 3-the first pumping protection device 4-the first pumping source 5-wavelength division multiplexer 6-is pre-
Amplifier stage Yb dosed optical fiber 7-the second fibre optic isolater 8-the second pumping protection device 9-the second pumping source 10-optical-fiber bundling device 11-treats
Survey Yb dosed optical fiber 12-cladding mode stripper 13-collimating lens 14-optical power detector.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.If additionally, technical characteristic involved in each embodiment of invention described below
The conflict of not constituting each other just can be mutually combined.
In view of the simple 4f of ytterbium ion13Electronic structure, does not has Excited-state Absorption, cross-relaxation process and more upper turn
Change or the consuming and the reduction in effective laser cross section of upper energy level population that internal mechanism causes；Absorbing wavelength is close to sending out simultaneously
Ejected wave is long, and quantum defect is little makes heat loss be less than 15%, and the sub-defect of neodymium-doped laser tolerance of identical operation wavelength reaches 30%
To 40%；Absorb and emissive porwer is high and spectrum width；Therefore trivalent ytterbium ion is very suitable near infrared laser, uses 900nm
Semiconductor laser to 980rnn carries out pumping and realizes operation wavelength and be positioned at the laser near 1 μm.
Yb dosed optical fiber photon of the present invention darkens test system and combines the Yb dosed optical fiber actual application feelings in associated laser device
Condition, by 1.064 μm near-infrared pumping photoirradiations, Yb dosed optical fiber to be measured is it may happen that some element energy level transition, doping particle
Number reversion and light microstructure change, cause Yb dosed optical fiber photon to darken effect, it is possible to the reliable light effectively detecting Yb dosed optical fiber
Son darkens effect.
Yb dosed optical fiber photon of the present invention darkens the structure of test system and includes that seed signal light part, pre-amplification stage and master are put
Big level.Seed signal light part is entered as seed source, the laser of seed source output by the laser instrument of an output low-power laser
Entering pre-amplification stage, the signal after pre-amplification then enters main amplifier stage, and gain fibre is Yb dosed optical fiber to be measured.
As it is shown in figure 1, the Yb dosed optical fiber photon darkening test system structure that the present invention proposes is as follows:
Including seed source the 1, first fibre optic isolater the 2, first pumping protection device the 3, first pumping source 4, wavelength division multiplexer 5,
Pre-amplification stage Yb dosed optical fiber the 6, second fibre optic isolater the 7, second pumping protection device the 8, second pumping source 9, optical-fiber bundling device 10, treat
Survey Yb dosed optical fiber 11, cladding mode stripper 12, collimating lens 13 and optical power detector 14.
The laser of seed source output is through the first fibre optic isolater, multiple through wavelength-division with the pump light of the first pumping source output
Closing ripple with device and become light beam, transmit along pre-amplification stage Yb dosed optical fiber, output light is through the second fibre optic isolater and the second pumping
The pump light of source output is respectively by the signal arm of optical-fiber bundling device and pumping arm, and total output light passes along Yb dosed optical fiber to be measured
Defeated, Yb dosed optical fiber to be measured output filters cladding mode by cladding mode stripper, and output signal beam finally enters through collimating lens
Enter optical power detector.
The present invention implement in the first fibre optic isolater 2 input welding of 1064nm seed source 1 and band tail optical fiber of band tail optical fiber,
With the first pumping source 4 and input welding of the first pumping protection device 3 of tail optical fiber, the first fibre optic isolater 2 of band tail optical fiber defeated
Go out the outfan of end and the first pumping protection device 3 respectively with two of the 1020～1080nm/960～990nm of wavelength division multiplexer 5
Channel welding, the outfan of wavelength division multiplexer 5 and pre-amplification stage Yb dosed optical fiber 6 one end welding, pre-amplification stage Yb dosed optical fiber 6 another
Outer one end and the second fibre optic isolater 7 input welding of band tail optical fiber, the outfan of the second pumping source 9 of band tail optical fiber and the second pump
The input welding of Pu protector 8, the outfan of the second fibre optic isolater 7 of band tail optical fiber and the output of the second pumping protection device 8
End respectively with signal arm optical fiber and the pumping arm fused fiber splice of optical-fiber bundling device 10, the outfan optical fiber reception of optical-fiber bundling device 10
Survey Yb dosed optical fiber 11, the other end of Yb dosed optical fiber 11 to be measured and the input welding of cladding mode stripper 12, cladding mode stripper
Outfan collimated lens 13 focussed collimated of 12 becomes a branch of directional light, pump laser send and be not incorporated ytterbium fiber absorption
Residual pump light is cladding light, through cladding mode stripper 12 and single covering tail optical fiber, remains the major part by collimating lens 13
Light is 1064nm flashlight, enters optical power detector 14, the real-time merit that bundled software received optical power detector 14 detects
Rate information.Fused fiber splice in whole system is all with the fibre core alignment welding to fibre core.
It is near infrared light that described seed source 1 exports light, and wavelength is 1064nm, and the pulsewidth of pulse signal is 26ns, pulse weight
Complex frequency is 100KHZ.
Described first fibre optic isolater is band tail optical fiber fibre optic isolater, and welding is at the outfan of seed source.Described second light
Fiber isolator is band tail optical fiber fibre optic isolater, and welding is at the outfan of pre-amplification stage Yb dosed optical fiber 6.
The near infrared light reverse isolation degree of 1064nm is more than by described first fibre optic isolater 2 with the second fibre optic isolater 7
50dB, forward insertion loss is less than 1.0dB, can effectively prevent echo reflection, prevents the 1064nm signal to seed source output
Light interferes.
Described first pumping protection device welding, after the tail optical fiber of described first pumping source, can be effectively isolated self-reversal and pass
The spontaneous emission light Amplified spontaneous emission that defeated Active Optical Fiber brings, the infringement of ASE.
Described wavelength division multiplexer is 960～990nm/1020～1080nm two wavelength multiplexer, respectively welding with kind
After the first fibre optic isolater 2 that component outfan connects and the first pumping protection device 3 of being connected with the first pumping source 4 outfan,
Play the effect of two wavelength multiplexings, and owing to two channel wavelength intervals are wider, laser wavelength drift the train of signal brought
Disturb the impact on system less, laser diode can be protected simultaneously.
The first described pumping source 4 and the second pumping source 9 respectively wavelength are the semiconductor laser of 976nm, 915nm,
It is owing to the Yb dosed optical fiber using ytterbium ion as gain ion has high quantum efficiency, has at 915nm and 976nm higher
Absworption peak.Its power selection needs to consider that the absorbent properties of Yb dosed optical fiber to be measured and the spontaneous radiation that can produce thereof are at signal optical fibre
Middle transmission, when Yb dosed optical fiber to be measured is 10/130 μm optical fiber, can select the semiconductor laser of 10W；Ytterbium light is mixed when to be measured
When fibre is 20/130 μm or 25/250 μm or 30/250 μm optical fiber, the semiconductor laser of 25W, 30W or 50W, merit can be selected
Rate scalable.
Described pre-amplification stage Yb dosed optical fiber 6 is mixed for the high-selenium corn that core Bao Jing is 5/125 μm or 7/128 μm or 10/130 μm
Ytterbium optical fiber, depends primarily on the model of Yb dosed optical fiber 11 to be measured, is connected with the output tail optical fiber of wavelength division multiplexer.Such as, when to be measured
When Yb dosed optical fiber is 10/130 μm optical fiber, pre-amplification stage Yb dosed optical fiber can select 5/125 μm optical fiber；When Yb dosed optical fiber to be measured is
When 20/130 μm or 25/250 μm or 30/250 μm optical fiber, pre-amplification stage Yb dosed optical fiber can select 10/130 μm or 7/128 μm
Optical fiber.
Described pre-amplification stage Yb dosed optical fiber 6 is mixed for the high-selenium corn that core Bao Jing is 5/125 μm or 7/128 μm or 10/130 μm
Ytterbium optical fiber, depends primarily on the model of Yb dosed optical fiber 11 to be measured, is connected with the output tail optical fiber of wavelength division multiplexer.
Described optical-fiber bundling device is 1+1 × 1 optical-fiber bundling device, second after signal arm and pre-amplification stage Yb dosed optical fiber 6
Pumping protection device 8 welding after the outfan welding of fibre optic isolater 7, pumping arm and the second pumping source 9.Optical-fiber bundling device defeated
Go out tail optical fiber and Yb dosed optical fiber welding to be measured, fiber numerical aperture Numerical of the output tail optical fiber of optical-fiber bundling device
Aperture, NA value is mated with the fiber numerical aperture NA value of testing fiber.
Described Yb dosed optical fiber to be measured can be core Bao Jing be 10/130 μm or 20/130 μm or 25/250 μm or 30/250 μ
M or the Yb dosed optical fiber of 20/400 μm.
Described Yb dosed optical fiber to be measured can be core Bao Jing be 10/130 μm or 20/130 μm or 25/250 μm or 30/250 μ
M or the Yb dosed optical fiber of 20/400 μm.
Described cladding mode stripper is for divesting cladding mode from optical fiber, and it is 1064nm that center i.e. can pass through wavelength
Optical signal, output tail optical fiber be single cladded-fiber, because photon darkening effect occurs over just the Can Yi district of fibre core, the most only needs
The flashlight of transmission in fibre core is monitored.
Described collimating lens is non-spherical lens, for the flashlight collimation focusing to output.
Described optical power detector is thermocouple detector, for detection tracer signal luminous power in real time, it is simple to see
Examine and process data.
Further, the embodiment of the present invention can use the heat radiation of air-cooled and aluminium sheet to protect each unit device in whole system
Part.
Example 1:
As a example by the Double Cladding Ytterbium Doped Fiber that test core cored footpath ratio is 10/130, with heat sealing machine, Active Optical Fiber to be measured is melted
Being connected between optical-fiber bundling device 10 and cladding mode stripper 12, optical-fiber bundling device 10 tail optical fiber is 10/130 double clad passive fiber,
It is 10/130 single covering passive fiber that cladding mode stripper 12 connects optical fiber, and pre-amplification stage Yb dosed optical fiber 6 is 5/125 for core Bao Jing
The high-selenium corn Yb dosed optical fiber of μm, checks whether whole test platform is put up according to above-mentioned, first opens the seed source 1 of 1064nm, then
First pumping source 4 electric current of regulation 976nm, can observe laser by infrared viewer and ammeter and pumping source electric current is arranged
Situation, after having regulated the first pump power, then regulates second pumping source 9 electric current of 915nm, luminous power be can be observed simultaneously and visit
Surveying device 14 bundled software and the changed power of energy meter gauge outfit, stablize the second pumping current, stablize whole test system, software connects
Receive the realtime power information that optical power detector 14 detects, finally gather time dependent power data and process data.
Fig. 2 is the result of the Double Cladding Ytterbium Doped Fiber of the 10/130 of the two kinds of different process making tested out, and the 1064nm detected believes
Number luminous power declines the fastest in time, i.e. slope is the biggest, then show that photon darkens efficiency the most obvious.
Example 2:
As a example by the Double Cladding Ytterbium Doped Fiber that test core cored footpath ratio is 25/250, testing fiber cut-in method such as figure example
1, replacing optical-fiber bundling device 10 tail optical fiber is 25/250 double clad passive fiber, and it is 25/250 list that cladding mode stripper 12 connects optical fiber
Covering passive fiber, pre-amplification stage Yb dosed optical fiber 6 is the high-selenium corn Yb dosed optical fiber that core Bao Jing is 10/130 μm, first opens 1064nm
Seed source 1, then regulate first pumping source 4 electric current of 976nm, laser and pump can be observed by infrared viewer and ammeter
Source, Pu electric current facilities, after having regulated the first pump power, then regulates second pumping source 9 electric current of 915nm, the most considerable
Observe optical power detector 14 bundled software and the changed power of energy meter gauge outfit, stablize the second pumping current, stablize whole survey
Test system, the realtime power information that software receipt optical power detector 14 detects, finally gather time dependent power number
According to and process data.Fig. 3 is that the result of the Double Cladding Ytterbium Doped Fiber of one 25/250 tested out is to reflect the light of this root optical fiber
Son darkens benefit.
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention, not in order to
Limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, all should comprise
Within protection scope of the present invention.
Claims (10)
1. a Yb dosed optical fiber photon darkens test system, it is characterised in that this system is by seed source (1), the first Fiber isolation
Device (2), the first pumping source (4), wavelength division multiplexer (5), pre-amplification stage Yb dosed optical fiber (6), the second fibre optic isolater (7), second
Pumping source (9), optical-fiber bundling device (10), Yb dosed optical fiber to be measured (11), cladding mode stripper (12), collimating lens (13) and light merit
Rate detector (14) forms, and the laser that wherein said seed source (1) exports passes through the first fibre optic isolater (2), with the first pumping
The pump light that source (4) exports synthesizes light beam through wavelength division multiplexer (5), transmits along pre-amplification stage optical fiber Yb dosed optical fiber (6),
The pump light that output light exports through the second fibre optic isolater (7) and the second pumping source (9) passes through optical-fiber bundling device (10) respectively
Signal arm and pumping arm input, the output light of optical-fiber bundling device (10) transmits along Yb dosed optical fiber to be measured (11), to be measured mixes ytterbium
The outfan of optical fiber (11) and cladding mode stripper (12) welding, the output beam of cladding mode stripper (12) is through collimating lens
(13) optical power detector (14) is entered.
2. Yb dosed optical fiber photon as claimed in claim 1 darkens test system, it is characterised in that described seed source (1) defeated
Going out light is near infrared light, and wavelength is 1064nm, and Output optical power long-time stability (25 DEG C, 8h) are ± 0.1db, Output optical power
Short-term stability (25 DEG C, 15min) is ± 0.05db.
3. Yb dosed optical fiber photon as claimed in claim 1 or 2 darkens test system, it is characterised in that described first optical fiber every
With the second fibre optic isolater (7), the near infrared light reverse isolation degree of 1064nm being more than 50dB from device (2), forward insertion loss is little
In 1.0dB.
4. Yb dosed optical fiber photon as claimed in claim 1 or 2 darkens test system, it is characterised in that described first pumping source
(4) be wavelength be 976nm, power is the semiconductor laser of 400mw.
5. Yb dosed optical fiber photon as claimed in claim 1 or 2 darkens test system, it is characterised in that described wavelength division multiplexer
(5) it is the wavelength division multiplexer of 960～990nm/1020～1080nm two wave bands.
6. Yb dosed optical fiber photon as claimed in claim 1 or 2 darkens test system, it is characterised in that described pre-amplification stage is mixed
Ytterbium optical fiber (6) be core Bao Jing be the high-selenium corn Yb dosed optical fiber of 5/125 μm or 7/128 μm or 10/130 μm.
7. Yb dosed optical fiber photon as claimed in claim 1 or 2 darkens test system, it is characterised in that described second pumping source
(9) be wavelength be the semiconductor laser of 915nm.
8. Yb dosed optical fiber photon as claimed in claim 1 or 2 darkens test system, it is characterised in that described optical-fiber bundling device
(10) it is (1+1) × 1 optical-fiber bundling device.
9. Yb dosed optical fiber photon as claimed in claim 1 or 2 darkens test system, it is characterised in that described cladding mode divests
The centre wavelength of device (12) is 1064nm, and output optical fibre is single cladded-fiber.
10. Yb dosed optical fiber photon as claimed in claim 1 or 2 darkens test system, it is characterised in that also include the first pumping
Protector (3) and the second pumping protection device (8), the input of described first pumping protection device (3) and the first pumping source (4) defeated
Going out end to be connected, the input of described second pumping protection device (8) and the outfan of the second pumping source (9) are connected.
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| CN110987368A (en) * | 2019-12-06 | 2020-04-10 | 中国工程物理研究院激光聚变研究中心 | Optical darkening test device and method for ytterbium-doped quartz optical fiber |
| CN111006848A (en) * | 2019-12-06 | 2020-04-14 | 中国工程物理研究院激光聚变研究中心 | Optical darkening testing device and method for ytterbium-doped quartz optical fiber with all-fiber structure |
| CN113281015A (en) * | 2021-06-01 | 2021-08-20 | 江苏亨通光纤科技有限公司 | Rare earth doped optical fiber photodarkening testing device |
| CN114152335A (en) * | 2021-12-02 | 2022-03-08 | 中国电子科技集团公司第四十六研究所 | Measuring device for optical fiber photodarkening and using method |
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| CN107917732A (en) * | 2017-11-16 | 2018-04-17 | 长飞光纤光缆股份有限公司 | A kind of optical fiber geometric parameter, attenuation coefficient integrated test system |
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| CN109524874A (en) * | 2018-12-29 | 2019-03-26 | 武汉睿芯特种光纤有限责任公司 | A kind of method of gain fibre measuring device and the stability for measuring gain fibre output power |
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| CN111006848A (en) * | 2019-12-06 | 2020-04-14 | 中国工程物理研究院激光聚变研究中心 | Optical darkening testing device and method for ytterbium-doped quartz optical fiber with all-fiber structure |
| CN110987368A (en) * | 2019-12-06 | 2020-04-10 | 中国工程物理研究院激光聚变研究中心 | Optical darkening test device and method for ytterbium-doped quartz optical fiber |
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| CN114252246A (en) * | 2021-12-31 | 2022-03-29 | 湖南大科激光有限公司 | Optical fiber testing method and system |
| CN117589312A (en) * | 2024-01-16 | 2024-02-23 | 中国工程物理研究院激光聚变研究中心 | Wavelength following characteristic measuring device and method for semiconductor laser pumping source |
| CN117589312B (en) * | 2024-01-16 | 2024-06-04 | 中国工程物理研究院激光聚变研究中心 | Wavelength following characteristic measuring device and method for semiconductor laser pumping source |
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