CN106911063A - Polarize random fiber pulse laser - Google Patents
Polarize random fiber pulse laser Download PDFInfo
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- CN106911063A CN106911063A CN201710255278.7A CN201710255278A CN106911063A CN 106911063 A CN106911063 A CN 106911063A CN 201710255278 A CN201710255278 A CN 201710255278A CN 106911063 A CN106911063 A CN 106911063A
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- 239000013307 optical fiber Substances 0.000 claims abstract description 81
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- 230000000737 periodic effect Effects 0.000 claims abstract description 33
- 230000002194 synthesizing effect Effects 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 25
- 238000010521 absorption reaction Methods 0.000 claims description 21
- 238000005253 cladding Methods 0.000 claims description 20
- 230000007797 corrosion Effects 0.000 claims description 16
- 238000005260 corrosion Methods 0.000 claims description 16
- 238000005086 pumping Methods 0.000 claims description 14
- 239000004038 photonic crystal Substances 0.000 claims description 11
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 8
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 5
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- 229910021389 graphene Inorganic materials 0.000 claims description 4
- 239000012212 insulator Substances 0.000 claims description 4
- 239000002096 quantum dot Substances 0.000 claims description 4
- 239000011358 absorbing material Substances 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
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- 229910017629 Sb2Te3 Inorganic materials 0.000 description 1
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- 229910052961 molybdenite Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06725—Fibre characterized by a specific dispersion, e.g. for pulse shaping in soliton lasers or for dispersion compensating [DCF]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06729—Peculiar transverse fibre profile
- H01S3/06733—Fibre having more than one cladding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06729—Peculiar transverse fibre profile
- H01S3/06741—Photonic crystal fibre, i.e. the fibre having a photonic bandgap
-
- 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
-
- 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10061—Polarization control
Abstract
The present invention provides a kind of random fiber pulse laser of polarization, including laser, beam synthesizing device, the periodic dispersion profile fiber being made up of the positive dispersion fiber and negative dispersion optical fiber connected, superweak evanscent field optical fiber and coupler, the output end of laser connects the first input end of beam synthesizing device, the output end of beam synthesizing device connects the first end of periodic dispersion profile fiber, second end of periodic dispersion profile fiber connects the input of coupler by superweak evanscent field optical fiber, first output end of coupler connects the second output end of beam synthesizing device, second output end is used to export polarization Random Laser.The present invention makes laser produce parameter wild effect, and nonlinear characteristic using superweak evanscent field optical fiber to realize four-wave mixing using the periodic dispersion characteristic of periodic dispersion profile fiber, the second output end of coupler is exported polarization Random Laser.
Description
Technical field
The invention belongs to field of lasers, and in particular to the random fiber pulse laser of one kind polarization.
Background technology
Polarizing random fiber pulse laser has the advantages that simple structure, good heat dissipation effect, output coupling are convenient, is protecting
The fields such as close optic communication, random bit source are with a wide range of applications.However, existing complete optical fiber polarization Random Laser source master
Random polarization treatment is carried out to fiber pulse laser using around inclined device.Limited by around inclined device speed, its bandwidth is relatively low.Existing rank
Section is temporarily without directly fiber pulse laser of the generation with random polarization.
The content of the invention
The present invention provides a kind of random fiber pulse laser of polarization, cannot directly be produced with solving current pulse laser
The problem of the laser with random polarization.
First aspect according to embodiments of the present invention, there is provided the random fiber pulse laser of one kind polarization, including laser,
Beam synthesizing device, the periodic dispersion profile fiber being made up of the positive dispersion fiber and negative dispersion optical fiber connected, superweak suddenly die
Field optical fiber and coupler, the output end of the laser connect the first input end of the beam synthesizing device, the light beam
The output end of synthesizer connects the first end of the periodic dispersion profile fiber, and the of the periodic dispersion profile fiber
Two ends connect the input of the coupler, the first output end connection institute of the coupler by the superweak evanscent field optical fiber
The second output end of beam synthesizing device is stated, the second output end is used to export polarization Random Laser；
Using the periodic dispersion characteristic of the periodic dispersion profile fiber, laser is set to produce parameter wild effect,
And the nonlinear characteristic using the superweak evanscent field optical fiber realizes four-wave mixing, so that the second output end of the coupler
Export the polarization Random Laser.
In a kind of optional implementation, the beam synthesizing device includes bundling device, pumping gain fibre and covering
Power stripper, wherein the first input end of the bundling device connects the output end of the laser, the second input connection institute
The first output end of coupler is stated, output end passes sequentially through the pumping gain fibre and Cladding Power Stripper connects the week
The first end of phase property dispersion profile optical fiber.
In another optional implementation, the pumping gain fibre is co-doped with light using high-power double cladding bait ytterbium
Fibre, is improved using the high-power double cladding pump technology based on the bundling device and high-power double cladding bait ytterbium co-doped fiber
The power of the laser of the output end of the coupler second output and repetition.
In another optional implementation, the Cladding Power Stripper and the periodic dispersion profile fiber it
Between be provided with the unrelated isolator of polarization.
In another optional implementation, it is provided between the periodic dispersion optical fiber and superweak evanscent field optical fiber
Polarization Controller.
In another optional implementation, broadband is provided between the superweak evanscent field optical fiber and the coupler
Wave filter.
In another optional implementation, the superweak evanscent field optical fiber is the one kind in following three kinds of structures：
Structure one, the superweak evanscent field optical fiber use the tapered fiber, the tapered fiber adsorption to have saturable to inhale
Receive material；The tapered fiber is obtained by standard single-mode fiber through drawing cone treatment, and the minimum diameter on tapered fiber is micro- more than 15
Rice, the maximum gauge on tapered fiber is less than 30 microns, and the drawing cone balance section length on tapered fiber is more than 1 centimetre；
The superweak evanscent field optical fiber is adsorbed with saturable absorption material using corrosion optical fiber, the corrosion optical fiber surface；
The covering that the corrosion optical fiber is is through the standard single-mode fiber after partial corrosion；
The superweak evanscent field optical fiber uses photonic crystal fiber, and being adsorbed with the inner hole wall of the photonic crystal fiber can
Saturated absorption material.
In another optional implementation, the saturable absorption material uses Graphene, CNT, quantum dot
Or topological insulator.
The beneficial effects of the invention are as follows：
1st, the present invention can make laser produce parameter by using the periodic dispersion characteristic of periodic dispersion profile fiber
Wild effect, and nonlinear characteristic using superweak evanscent field optical fiber realizes four-wave mixing, can make the second of coupler
Output end directly exports polarization Random Laser, in addition, the present invention can be produced more quickly by using superweak evanscent field optical fiber
Laser, and can realize also normally being run under watt magnitude luminous power, produce ultrashort laser pulse；
2nd, the present invention and it is provided without 980/1550 wavelength division multiplexer of single mode and introduces pump light, but makes the pumping
Gain fibre is high-power double cladding bait ytterbium co-doped fiber, and light is co-doped with using based on the bundling device and high-power double cladding bait ytterbium
Fine high-power double cladding pump technology, so can not only improve pump power and efficiency, can also improve the coupler
The power of the laser of the second output end output and repetition；
3rd, the present invention is by increasing the unrelated isolator of polarization, it is possible to achieve the unidirectional operation in laser cavity；
4th, the present invention can optimize the polarization state of whole laser cavity by increasing Polarization Controller；
5th, the present invention is by setting bandwidth filter, it is possible to achieve the bandwidth filtering of whole laser cavity, with meet polarization with
The output requirement of machine laser.
Brief description of the drawings
Fig. 1 is one embodiment structural representation of the present invention random fiber pulse laser of polarization；
Fig. 2 is another example structure schematic diagram of the present invention random fiber pulse device of polarization.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the embodiment of the present invention, and make of the invention real
Applying the above-mentioned purpose of example, feature and advantage can be more obvious understandable, below in conjunction with the accompanying drawings to technical side in the embodiment of the present invention
Case is described in further detail.
In the description of the invention, unless otherwise prescribed with restriction, it is necessary to illustrate, term " connection " should do broad sense reason
Solution, can be joined directly together for example, it may be mechanically connecting or electrical connection, or two connections of element internal, also may be used
It is indirectly connected to by intermediary, for the ordinary skill in the art, can as the case may be understands above-mentioned
The concrete meaning of term.
It is one embodiment structural representation of the present invention random fiber pulse laser of polarization referring to Fig. 1.The polarization with
Machine fiber pulse laser can include laser 110, beam synthesizing device 120, positive dispersion fiber 131 and negative color by connecting
Periodic dispersion profile fiber 130, superweak evanscent field optical fiber 140 and coupler 150 that astigmatism fine 132 is constituted, the laser
The output end of device 110 connects the first input end of the beam synthesizing device 120, the output end of the beam synthesizing device 120
The first end of the periodic dispersion profile fiber 130 is connected, the second end of the periodic dispersion profile fiber 130 passes through institute
State the input that superweak evanscent field optical fiber 140 connects the coupler 150, the first output end connection institute of the coupler 150
The second output end of beam synthesizing device 120 is stated, the second output end is used to export polarization Random Laser；Using the periodicity color
The periodic dispersion characteristic of profile fiber 130 is dissipated, laser is produced parameter wild effect, and utilize the superweak evanscent field light
Fine 140 nonlinear characteristic realizes four-wave mixing, so that the second output end output polarization of coupler 150 is random swashing
Light.
In the present embodiment, the laser 110 can have strong dissipativeness and high non-linearity, and it can be 980nm pumpings
Laser, by the way of forward pumping, the coupler 150 can be single-input double-output, and its first output end and second
The light of output end point ratio is：9:1；Superweak evanscent field optical fiber 140 can be the one kind in following three kinds of structures：
Structure one, the superweak evanscent field optical fiber use the tapered fiber, the tapered fiber adsorption to have saturable to inhale
Receive material；The tapered fiber is obtained by standard single-mode fiber through drawing cone treatment, and the minimum diameter on tapered fiber is micro- more than 15
Rice, the maximum gauge on tapered fiber is less than 30 microns, and the drawing cone balance section length on tapered fiber is more than 1 centimetre.The structure
One preparation method can be：It is immersed in saturable absorption material solution after standard single-mode fiber is drawn into cone treatment, treats to satisfy
After being adsorbed onto optical fiber surface with absorbing material, by optical fiber take out be placed in vacuum tank dry, it is to be dried after the completion of, the structure one is
It is made.Wherein, the time that optical fiber soaks in the solution is more long, and the amount of the saturable absorption material of optical fiber surface attachment is more,
The saturable absorption material of attachment is more, and fibre loss is bigger, therefore, when making, should be by fibre loss control certain
A kind of scope, relatively simple control device is that one end of optical fiber is passed through the 980nm laser of 100mW, another termination of optical fiber
Power meter, in immersion process, the reading of Real Time Observation power meter, when fibre loss reaches 1~3dB, should just stop immersion behaviour
Make.
, using corrosion optical fiber, the corrosion optical fiber surface is adsorbed with saturable suction for structure two, the superweak evanscent field optical fiber
Receive material；The covering that the corrosion optical fiber is is through the standard single-mode fiber after partial corrosion.Wherein, the corrosion optical fiber is by standard
Single-mode fiber corrodes and obtains through hydrofluoric acid solution：The covering of standard single-mode fiber after corrosion, is marked by hydrofluoric acid solution partial corrosion
A diameter of 20~40 microns of quasi-monomode fiber.The preparation method of the structure two can be：Soaked after standard single-mode fiber is corroded
Bubble after saturable absorption material is adsorbed onto optical fiber surface, optical fiber is taken out and is placed in vacuum in saturable absorption material solution
In case dry, it is to be dried after the completion of, the structure two is made.Wherein, the time that optical fiber soaks in the solution is more long, and optical fiber surface is attached
The amount of the saturable absorption material is more, and the saturable absorption material of attachment is more, and fibre loss is bigger, therefore,
During making, should be by fibre loss control in certain limit, a kind of relatively simple control device is to be passed through one end of optical fiber
The 980nm laser of 100mW, another termination power meter of optical fiber, in immersion process, the reading of Real Time Observation power meter works as optical fiber
When loss reaches 1~3dB, should just stop dip operation.In addition, the length of the corrosion optical fiber can be 1 to 5 centimetre.
Structure three, the superweak evanscent field optical fiber use photonic crystal fiber, on the inner hole wall of the photonic crystal fiber
It is adsorbed with saturable absorption material.Wherein, the model of the photonic crystal fiber：Macropore thin-walled shaddock type PCF (photonic
Crystal fiber, photonic crystal fiber).The preparation method of the structure three can be：Using siphonic effect, inhale saturable
Receive material solution to be filled into the airport of photonic crystal fiber, then optical fiber is placed in vacuum tank and is dried, completion to be dried
Afterwards, the structure three is made.
It should be noted that：Saturable absorption material can use Graphene, CNT, quantum dot or open up in the present invention
Insulator is flutterred, wherein Graphene can be graininess；The CNT can for graininess (ultrashort SWCN, directly
Footpath 1-2nm, length 1-3nm)；It is black solid powder by taking MoS2 as an example that the quantum dot is；The topological insulator, with
It is lenticular as a example by Sb2Te3.Additionally, no matter superweak evanscent field optical fiber is which kind of structure in above-mentioned three kinds of structures, in order to right
Superweak evanscent field optical fiber is protected, and the superweak evanscent field optical fiber can be enclosed in the container of sealing in application makes
With.In addition, the length of the photonic crystal fiber can be 1 to 5 centimetre.
Input to the pump light of superweak evanscent field optical fiber 140 not only can be in the non-linear spy of superweak evanscent field optical fiber 140
Property under realize four-wave mixing, and pump light is after superweak evanscent field optical fiber 140 is entered, and pump light is not directly and saturable
Absorbing material interacts, but only faint evanscent field can break through the mould field constraint of optical fiber, with saturable absorption
Material interacts.Specifically, in existing pulse laser generally by the way of directly transmission saturable absorption material,
Saturable absorption material is made the end face that very thin diaphragm sticks on optical fiber, but due to being limited by mode field area,
The luminous power of watt magnitude is easy to burn out saturable absorption material diaphragm.This patent, can by using superweak evanscent field optical fiber
Saturated absorption material is adsorbed in optical fiber, rather than fiber end face, and superweak evanscent field optical fiber can be made to have ultrafast saturated absorption
Characteristic and relaxation time, can so enable superweak evanscent field optical fiber actively rapidly modulate the damage in laser cavity
Consumption, makes each laser longitudinal module of script phase random distribution realize PGC demodulation, even if also can normally be transported under watt magnitude luminous power
OK, ultrashort laser pulse is produced.As can be seen here, the present invention can be produced more quickly by using superweak evanscent field optical fiber
Laser, and can realize also normally being run under watt magnitude luminous power, produce ultrashort laser pulse.
As seen from the above-described embodiment, the periodic dispersion characteristic by using periodic dispersion profile fiber of the invention, can
So that laser produces parameter wild effect, and nonlinear characteristic using superweak evanscent field optical fiber to realize four-wave mixing, can
So that the second output end of coupler directly exports polarization Random Laser.
It is another example structure schematic diagram of the present invention random fiber pulse laser of polarization referring to Fig. 2.Fig. 2 with
The difference of the random fiber pulse laser of polarization shown in Fig. 1 is that the beam synthesizing device 120 can include bundling device 121, pump
Pu gain fibre 122 and Cladding Power Stripper 123, wherein the first input end of the bundling device 121 connects the laser
110 output end, the second input connects the first output end of the coupler 150, and output end passes sequentially through the pumping and increases
Beneficial optical fiber 122 and Cladding Power Stripper 123 connect the first end of the periodic dispersion profile fiber 130.
In the present embodiment, bundling device is exported for dual input list.The continuous laser of the output of pump laser 110 980nm is first
It is coupled in pumping gain fibre 122 by bundling device 121, gain process is carried out by pumping gain fibre 122, is then transferred to bag
Layer power stripper 123, the pump light in the covering of pumping gain fibre 122 is filtered by Cladding Power Stripper 123.Carrying out light
During Shu Hecheng, the present invention is simultaneously provided without 980/1550 wavelength division multiplexer of single mode and introduces pump light, but makes the pumping
Gain fibre is high-power double cladding bait ytterbium co-doped fiber, and light is co-doped with using based on the bundling device and high-power double cladding bait ytterbium
Fine high-power double cladding pump technology, so can not only improve pump power and efficiency, can also improve the coupler
The power of the laser of the second output end output and repetition.
The difference of the random fiber pulse laser of polarization shown in Fig. 2 and Fig. 1 is also resided in, the Cladding Power Stripper 123
Polarization unrelated isolator 210 is provided between the periodic dispersion profile fiber 130.The present invention is unrelated by increasing polarization
Isolator, it is possible to achieve the unidirectional operation in laser cavity.
The difference of the random fiber pulse laser of polarization shown in Fig. 2 and Fig. 1 is also resided in, the periodic dispersion optical fiber 130
Polarization Controller 220 is provided between superweak evanscent field optical fiber 140.The present invention can be optimized by increasing Polarization Controller
The polarization state of whole laser cavity.
The difference of the random fiber pulse laser of polarization shown in Fig. 2 and Fig. 1 is also resided in, the superweak evanscent field optical fiber 140
Broadband filter 230 is provided between the coupler 150.The present invention is by setting bandwidth filter, it is possible to achieve whole
The bandwidth filtering of laser cavity, to meet the output requirement of polarization Random Laser.Wherein, the bandwidth filter 230 can be work(high
Rate bandwidth filter, its filtering bandwidth can bear luminous power more than watt magnitude between 15-25nm.
As seen from the above-described embodiment, the periodic dispersion characteristic by using periodic dispersion profile fiber of the invention, can
So that laser produces parameter wild effect, and nonlinear characteristic using superweak evanscent field optical fiber to realize four-wave mixing, can
So that the second output end of coupler directly exports polarization Random Laser.
Those skilled in the art considering specification and after putting into practice invention disclosed herein, will readily occur to it is of the invention its
Its embodiment.The application is intended to any modification of the invention, purposes or adaptations, these modifications, purposes or
Person's adaptations follow general principle of the invention and including undocumented common knowledge in the art of the invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be appreciated that the invention is not limited in the precision architecture being described above and be shown in the drawings, and
And can without departing from the scope carry out various modifications and changes.The scope of the present invention is only limited by appended claim.
Claims (8)
1. it is a kind of to polarize random fiber pulse laser, it is characterised in that including laser, beam synthesizing device, by what is connected
Periodic dispersion profile fiber, superweak evanscent field optical fiber and coupler that positive dispersion fiber and negative dispersion optical fiber are constituted, it is described
The output end of laser connects the first input end of the beam synthesizing device, the output end connection institute of the beam synthesizing device
The first end of periodic dispersion profile fiber is stated, the second end of the periodic dispersion profile fiber passes through the superweak evanscent field
Optical fiber connects the input of the coupler, and the second of the first output end connection beam synthesizing device of the coupler is defeated
Go out end, the second output end is used to export polarization Random Laser；
Using the periodic dispersion characteristic of the periodic dispersion profile fiber, laser is set to produce parameter wild effect, and profit
Four-wave mixing is realized with the nonlinear characteristic of the superweak evanscent field optical fiber, so that the second output end output of the coupler
The polarization Random Laser.
2. it is according to claim 1 to polarize random fiber pulse laser, it is characterised in that the beam synthesizing device bag
Bundling device, pumping gain fibre and Cladding Power Stripper are included, wherein the first input end of the bundling device connects the laser
The output end of device, the second input connects the first output end of the coupler, and output end passes sequentially through the pumping gain light
Fine and Cladding Power Stripper connects the first end of the periodic dispersion profile fiber.
3. it is according to claim 2 to polarize random fiber pulse laser, it is characterised in that the pumping gain fibre is adopted
With high-power double cladding bait ytterbium co-doped fiber, using the Gao Gong based on the bundling device and high-power double cladding bait ytterbium co-doped fiber
Rate double clad pump technology come improve the output end of the coupler second output laser power and repetition.
4. it is according to claim 2 to polarize random fiber pulse laser, it is characterised in that the Cladding Power Stripper
The unrelated isolator of polarization is provided between the periodic dispersion profile fiber.
5. it is as claimed in any of claims 1 to 4 to polarize random fiber pulse laser, it is characterised in that described
Polarization Controller is provided between periodic dispersion optical fiber and superweak evanscent field optical fiber.
6. it is according to claim 5 to polarize random fiber pulse laser, it is characterised in that the superweak evanscent field optical fiber
Broadband filter is provided between the coupler.
7. it is according to claim 1 to polarize random fiber pulse laser, it is characterised in that the superweak evanscent field optical fiber
It is the one kind in following three kinds of structures：
Structure one, the superweak evanscent field optical fiber use the tapered fiber, the tapered fiber adsorption to have saturable absorption material
Material；The tapered fiber is obtained by standard single-mode fiber through drawing cone treatment, and the minimum diameter on tapered fiber is more than 15 microns, draws
Maximum gauge on cone optical fiber is less than 30 microns, and the drawing cone balance section length on tapered fiber is more than 1 centimetre；
The superweak evanscent field optical fiber is adsorbed with saturable absorption material using corrosion optical fiber, the corrosion optical fiber surface；It is described
The covering that corrosion optical fiber is is through the standard single-mode fiber after partial corrosion；
The superweak evanscent field optical fiber uses photonic crystal fiber, and saturable is adsorbed with the inner hole wall of the photonic crystal fiber
Absorbing material.
8. it is according to claim 7 to polarize random fiber pulse laser, it is characterised in that the saturable absorption material
Using Graphene, CNT, quantum dot or topological insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710255278.7A CN106911063B (en) | 2017-04-19 | 2017-04-19 | Polarize random fiber pulse laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710255278.7A CN106911063B (en) | 2017-04-19 | 2017-04-19 | Polarize random fiber pulse laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106911063A true CN106911063A (en) | 2017-06-30 |
| CN106911063B CN106911063B (en) | 2019-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710255278.7A Expired - Fee Related CN106911063B (en) | 2017-04-19 | 2017-04-19 | Polarize random fiber pulse laser |
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| CN108988111A (en) * | 2018-07-13 | 2018-12-11 | 上海大学 | Pulse laser and preparation method thereof based on conical fiber vulcanized lead quantum dot |
| CN111442851A (en) * | 2020-04-13 | 2020-07-24 | 重庆大学 | Time lens measuring system based on Raman soliton self-frequency shift |
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| CN102087455A (en) * | 2010-12-29 | 2011-06-08 | 南京大学 | Superlattice based polarizing insensitive laser frequency transformation method and device |
| CN106058623A (en) * | 2016-08-12 | 2016-10-26 | 重庆大学 | All-fiber ultrafast laser based on saturable absorption material and ultra weak evanescent field |
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| JP2000028370A (en) * | 1998-07-14 | 2000-01-28 | Nippon Telegr & Teleph Corp <Ntt> | Random polarization light source |
| CN2638100Y (en) * | 2003-08-07 | 2004-09-01 | 东南大学 | Discrete laman optical fibre amplifier based on bipath two way structure |
| CN1617037A (en) * | 2004-12-03 | 2005-05-18 | 清华大学 | Broadband envelope flat full optical fiber multiple wavelength Raman laser |
| JP2010283224A (en) * | 2009-06-05 | 2010-12-16 | Miyachi Technos Corp | Laser device |
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| CN108988111A (en) * | 2018-07-13 | 2018-12-11 | 上海大学 | Pulse laser and preparation method thereof based on conical fiber vulcanized lead quantum dot |
| CN111442851A (en) * | 2020-04-13 | 2020-07-24 | 重庆大学 | Time lens measuring system based on Raman soliton self-frequency shift |
| CN111442851B (en) * | 2020-04-13 | 2021-01-29 | 重庆大学 | Time lens measuring system based on Raman soliton self-frequency shift |
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| CN106911063B (en) | 2019-02-05 |
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