CN107968312A - One kind mixes bait Photonic Crystal Fiber Lasers - Google Patents

One kind mixes bait Photonic Crystal Fiber Lasers Download PDF

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Publication number
CN107968312A
CN107968312A CN201810035663.5A CN201810035663A CN107968312A CN 107968312 A CN107968312 A CN 107968312A CN 201810035663 A CN201810035663 A CN 201810035663A CN 107968312 A CN107968312 A CN 107968312A
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Prior art keywords
polarization
light
bait
wavelength
photonic crystal
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CN201810035663.5A
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CN107968312B (en
Inventor
张敏
钟学森
郑婉君
杜斌
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Shenzhen University
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Shenzhen University
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES 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
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06Construction or shape of active medium
    • H01S3/063Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067Fibre lasers
    • H01S3/06708Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06716Fibre compositions or doping with active elements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES 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
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06Construction or shape of active medium
    • H01S3/063Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067Fibre lasers
    • H01S3/06708Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06712Polarising fibre; Polariser
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES 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
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06Construction or shape of active medium
    • H01S3/063Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067Fibre lasers
    • H01S3/06708Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06729Peculiar transverse fibre profile
    • H01S3/06741Photonic crystal fibre, i.e. the fibre having a photonic bandgap
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES 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
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/10061Polarization control

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Lasers (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)

Abstract

The present invention is suitable for field of laser device technology, provide one kind and mix bait Photonic Crystal Fiber Lasers, including forming the wavelength division multiplexer of annular chamber, mixing bait single mould photon crystal optical fiber, the first Polarization Controller, polarization-dependent isolator, the second Polarization Controller, coupler and wave filter, and it is external in the pump laser of wavelength division multiplexer.Bait Photonic Crystal Fiber Lasers provided in an embodiment of the present invention of mixing replace the traditionally combination using erbium-doped fiber and strong nonlinearity optical fiber by using the bait single mould photon crystal optical fiber of mixing with strong nonlinearity effect as gain media, and stable Single wavelength output is realized based on nonlinear polarization rotation.2 Polarization Controllers are added on the basis of traditional tunable filtering structure and weaken gain broadening effect, bait Photonic Crystal Fiber Lasers provided in an embodiment of the present invention of mixing not only improve the tunable ability of optical maser wavelength, and improve the stability of light source.

Description

One kind mixes bait Photonic Crystal Fiber Lasers
Technical field
The invention belongs to field of laser device technology, more particularly to a kind of broad tuning, high s/n ratio mix bait photonic crystal light Fibre laser.
Background technology
Narrow cable and wide optical fiber laser possesses the advantages of many notable, for example, high optical coherence, low noise, improvement system Performance and sensing sensitivity etc.;Monitored in distributed petroleum pipeline, optical-fibre communications and sensory field of optic fibre are also widely used.
The implementation method of narrow cable and wide optical fiber laser has a variety of:Bragg reflector DBR (Distributed Bragg Reflection) and distributed feedback DFB (Distributed Feed Back) optical fiber laser linear chamber, annular chamber Structure, compound ring cavity, and introduce special optical fiber bragg grating FBG (Fibber Bragg Gratting) and be used as ultra-narrow Bandpass filter.Recently, narrow line width regulatable optical fiber laser has aroused great concern, and swashs because adding these The gas concentration signal of bigger can be captured after light device.Compare structure using low-loss adjustable harmonic device and appropriate coupling output An Er with broad tuning ability is built:Yb co-doped fiber lasers.
With reference to tunable optic filter and nonlinear semiconductor image intensifer, the spectrum produced based on anti-four-wave mixing effect is narrow Changing effect realizes the stabilization single-frequency oscillating laser output that tunable range is 48nm.Ytterbium Yb tune Q narrow cable and wide optical fiber lasers are mixed, It is filtered in linear resonant cavity using acousto-optic modulation and multiple-mode interfence, realizes that the tunable ability of spectrum is more than 12nm, scope from 1038~1050nm.In addition, the power stability of narrow-linewidth laser light source also directly affects the sensitivity of optical fiber gas sensing.Knot Close fiber Bragg grating F-P etalon, FBG and highly doped erbium-doped fiber, 2 it is small when inner light source fluctuation to be less than 0.5%, 3dB line widths small It is obtained in 0.01nm.One separate type based on two fiber Bragg grating filters of matching is tunable and output-power fluctuation Optical fiber ring laser less than 0.1dB.
Although existing laser can realize that laser exports, the tunable ability of optical maser wavelength is poor, and light source is not Stablize.
The content of the invention
The technical problems to be solved by the invention are that providing one kind mixes bait Photonic Crystal Fiber Lasers, it is intended to solve existing The problem of tunable ability of the wavelength of the laser of some laser output is poor, and flashing is determined.
The present invention is achieved in that one kind mixes bait Photonic Crystal Fiber Lasers, including wavelength division multiplexer, mixes bait single mode Photonic crystal fiber, the first Polarization Controller, polarization-dependent isolator, the second Polarization Controller, coupler, wave filter and pumping Laser, the wavelength division multiplexer, described mix bait single mould photon crystal optical fiber, first Polarization Controller, the polarization phase Isolator, second Polarization Controller, the coupler is closed to connect to form annular chamber by optical fiber with the wave filter, it is described The external pump laser of wavelength division multiplexer;
The pumping device, for producing pump light;
The wavelength division multiplexer, for the pump light to be introduced the annular chamber;It is additionally operable to the different multi beam of wavelength Optical signal synthesizes a branch of optical signal, and the optical signal transmission that conjunction beam obtains is mixed bait single mould photon crystal optical fiber to described;
It is described to mix bait single mould photon crystal optical fiber, under the radiation of the pump light, exporting exciting light;
First Polarization Controller, the polarization-dependent isolator and second Polarization Controller, for described Exciting light carries out polarization state adjusting, obtains polarised light;
The coupler, for being split according to preset proportion to the polarised light, obtains output light and concussion light, and The output light output is detected, gives the concussion optical transport to the wave filter;
The wave filter, for carrying out wavelength regulation, tuning and filtering process respectively to the concussion light, after processing Concussion optical transport gives the wavelength division multiplexer.
Further, the pumping device is 980nm semiconductor lasers.
Further, first Polarization Controller is 3 ring Polarization Controllers.
Further, second Polarization Controller is 3 ring Polarization Controllers.
Further, the output light and the ratio of the concussion light are 10:90.
Further, centered on the wave filter tunable wave length scope from 1525~1570nm, 1~18nm of three dB bandwidth Continuously adjustable polarization is without related tunable optic filter.
Compared with prior art, the present invention beneficial effect is:It is provided in an embodiment of the present invention to mix bait photonic crystal fiber Laser includes wavelength division multiplexer, mixes bait single mould photon crystal optical fiber, the first Polarization Controller, polarization-dependent isolator, second Polarization Controller, coupler, wave filter and pump laser, mix bait single mode photon crystalline substance by using with strong nonlinearity effect Body optical fiber replaces the traditionally combination using erbium-doped fiber and strong nonlinearity optical fiber as gain media, is revolved based on nonlinear polarization Turning effect realizes stable Single wavelength output.2 Polarization Controls are added on the basis of traditional tunable filtering structure Device weakens gain broadening effect, and bait Photonic Crystal Fiber Lasers provided in an embodiment of the present invention of mixing not only improve optical maser wavelength Tunable ability, and improve the stability of light source.
Brief description of the drawings
Fig. 1 is a kind of structure diagram for mixing bait Photonic Crystal Fiber Lasers provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
Fig. 1 shows that one kind provided in an embodiment of the present invention mixes bait Photonic Crystal Fiber Lasers, including wavelength division multiplexer WDW, mix bait single mould photon crystal optical fiber ED-PCF, be the first Polarization Controller PC1, polarization-dependent isolator PD-ISO, second inclined Shake controller PC2, coupler Coupler, wave filter TF and pump laser Pump, and wavelength division multiplexer WDW, mix bait single mode photon Crystal optical fibre ED-PCF, the first Polarization Controller PC1, polarization-dependent isolator PD-ISO, the second Polarization Controller PC2, coupling Device Coupler connects to form annular chamber with wave filter TF by optical fiber, the external pump laser Pump of wavelength division multiplexer WDW;
Pumping device Pump, for producing pump light;Wavelength division multiplexer WDW, for the pump light to be introduced the annular Chamber;It is additionally operable to the different multi beam optical signal of wavelength synthesizing a branch of optical signal, and optical signal transmission that beam obtains will be closed to mixing bait Single mould photon crystal optical fiber ED-PCF;Bait single mould photon crystal optical fiber ED-PCF is mixed, it is defeated under the radiation of the pump light Go out exciting light;First Polarization Controller PC1, polarization-dependent isolator PD-ISO and the second Polarization Controller PC2, for described Exciting light carries out polarization state adjusting, obtains polarised light;Coupler Coupler, for according to preset proportion to the polarised light into Row beam splitting, obtains output light and concussion light, and the output light output is detected, by the concussion optical transport to wave filter TF;Wave filter TF, for carrying out wavelength regulation, tuning and filtering process respectively to the concussion light, by the concussion light after processing It is transferred to wavelength division multiplexer WDW.
The embodiment of the present invention is based on nonlinear polarization rotation (NPR, Nonlinear Polarization Rotation an all -fiber) is constructed, wide adjusting, Single wavelength, narrow linewidth mix bait Photonic Crystal Fiber Lasers ED-PCFL (Erbium-Doped Photonic Crystal Fiber Laser).It is appropriate to change after adding two Polarization Controllers The light of any input polarization, is converted to set any output polarization state light, passed through by the rotation angle of Polarization Controller Change polarization state and meet phase-matching condition, stable output could be realized by only meeting the laser of phase matched.Thus, generation The stability of laser and tunable ability are greatly improved.
ED-PCFL provided in an embodiment of the present invention is as shown in Figure 1.The ED-PCFL mixes bait photonic crystal fiber by 10m's long ED-PCF (Erbium-Doped Photonic Crystal Fiber) is used as gain media, 1 980nm semiconductor laser Pumping device is made, 1 centre wavelength tunable range is unrelated from 1525~1570nm, polarization continuously adjustable 1~18nm of three dB bandwidth Tunable optic filter TF (Tunable Filter), 1 90:10 coupler Coupler, 1 polarization-dependent isolator PD- ISO and 2 Polarization Controller PC composition.PD-ISO is combined with PC not to be used only for producing Polarization Dependent Loss, and available In the unidirectional vibration for ensureing laser, force and mix bait Photonic Crystal Fiber Lasers and run with traveling-wave mode, to avoid gain hole burning The influence of effect.Coupler Coupler is 0.02nm with minimum resolution using 10% as output light, measurement range from 600~ The spectrometer measurement output spectrum of 1700nm, the first Polarization Controller PC1 and the second Polarization Controller PC2 in the present embodiment are equal Using 3 ring Polarization Controllers.
In the embodiment of the present invention, pass through:
1st, using the unrelated tunable optic filter TF of polarization, polarization-dependent isolator PD-ISO and two Polarization Controllers PC, can obtain more preferable output performance.Specifically, cooperated by the function of each device and realize that stable wavelength is defeated Go out.Unrelated tunable optic filter TF is polarized to act on broad tuning, the combination of PD-ISO and PC play small range adjustment effect, if The Polarization Dependent Loss for polarizing the output wavelength of unrelated tunable optic filter TF and the combination generation of PD-ISO and PC mismatches, i.e., Polarize unrelated tunable optic filter TF outgoing wavelength and be unsatisfactory for phase matched adjusting, can not also realize stable laser output.This When, the stabilizations of unrelated tunable optic filter TF output wavelengths can be polarized to realize by the angle of appropriate rotatory polarization controller PC Output.PD-ISO combines the unidirectional vibration that can be used to ensure that laser with PC, forces and mixes bait Photonic Crystal Fiber Lasers ED-PCFL Run with traveling-wave mode, to avoid the influence of gain hole-burning effect.
2nd, narrower line width is not only obtained using two Polarization Controller PC, but also light source maximum output can be made More stablize.Wherein, the change of polarization state passes through the angle, θ of each crank in rotatory polarization controller PC1, θ2And θ3, based on non- Linear polarization rotation causes with polarizing relevant loss to realize that stable tunable laser exports.What is used in the present embodiment is inclined The control principle of controller PC of shaking is:Arbitrary input polarization light is changed into linearly polarized light by first quarter-wave plate, and two This linearly polarized light is gone to any desired polarization direction by/mono- wave plate, and final second quarter-wave plate again should Polarised light is transformed into any output polarization state intentionally got.In the present embodiment, the polarizations of the first Polarization Controller PC1 and second The effect of controller PC2 is of equal value, is in order to which output wavelength can be allow to adjust thinner using 2 Polarization Controllers Cause.
3rd, the gain ranging of gain media is chosen without related tunable optic filter TF using polarization, only when output wavelength is in TF Filter range within and the less laser of polarization loss could obtain stable output.In other words, TF plays broad tuning, And PC then can be achieved to fine-tune output wavelength.Thus, the present embodiment can obtain shorter tunable stepping wavelength, lead to Cross the appropriate TF and PC that adjusts and realize required target output wavelength.Specifically, the gain ranging of gain media is wider, can reach 100nm or so, by only having part wavelength to export after TF.By the filter range of manual adjustment TF, only work as gain media Gain ranging when meeting the filter range of TF, corresponding spectrum could realize stable output.The polarization stated in the present embodiment Smaller loss is compared with other output wavelengths, it can realize its polarization state of the optical maser wavelength of output and PD-ISO Polarization direction is consistent.PD-ISO only allows a certain specific polarization state wavelength by if the polarization state and PD-ISO of certain wavelength Permitted polarization direction is perpendicular, then the wavelength can be completely blocked and lose, and if it is permitted partially with PD-ISO The direction that shakes is less than 90 degree of angle into one, then partition losses;If parallel, then pass through completely.It is constant in the filter range of TF In the case of, the angle of appropriate 3 ring Polarization Controller of change, you can realize that the small range of output wavelength is adjusted.
The itd is proposed key component for mixing bait Photonic Crystal Fiber Lasers ED-PCFL provided in an embodiment of the present invention is two A Polarization Controller PC, in order to compensate for because the chamber damage that 2 Polarization Controllers of increase are brought, the pump power of pumping device is increased To 81.14mW, which is less than modelocking threshold power, and the 3dB line widths of spectrum are 0.02nm, and stability is greatly improved, And since PD-ISO and PC combines the nonlinear polarization rotation produced, it is suppressed that significant moding and mode competition. PD-ISO and any 1 PC can produce nonlinear polarization rotation, and the present embodiment adds 2 PC and finer can change The polarization direction of light, and then realize fine-tuning for wavelength.
There is the characteristic for effectively suppressing erbium ion own gain broadening at room temperature due to mixing bait single mould photon crystal optical fiber, After 2 PC are added in annular chamber, not only spectrum narrows, and the stability of light source is also greatly improved.
The embodiment of the present invention realizes the tuning of wavelength by adjusting the centre wavelength of TF and the anglec of rotation of PC.Tunable wave length Scope covers C-band, and scope is from 1525.66~1566.34nm, span about 40nm.Based on 08 database simulations of HITRAN Shown in acetylene absorption line strength, it can be seen that the tunable wave length scope of ED-PCFL covers acetylene P branch Absorption Lines.Then, lead to Overregulate TF and PC controls output wavelength and remove matching acetylene from the absworption peak between 1528.014~1535.396nm.ED-PCFL Output wavelength absorbs peak deviation with acetylene gas and is less than 0.02nm, and can be very good to solve light source output wavelength is difficult that high accuracy is right The problem of quasi- gas absworption peak.In the present embodiment, two PC can be adjusted, and as which is adjusted, how much adjusts angle, be depended on In required target output wavelength.
Stabilized lasers of the tunable wave length stepping length that the embodiment of the present invention can obtain less than 0.5nm export, than existing Have and use the tunable wave length stepping length of tunable FBG realizations shorter in technology.This fully demonstrates the embodiment of the present invention should Used in laser gas sensing and the potentiality of sensory field of optic fibre.It is provided in an embodiment of the present invention to mix bait Photonic Crystal Fiber Lasers The tunable wave length ability of ED-PCFL is strong, and the stability of output spectrum is also greatly improved when comparing no PC, can with it come Do the light source of gas sensing.
In embodiments of the present invention, wavelength division multiplexer WDM is a branch of by the different optical signal synthesis of wavelength, along simple optical fiber Transmission, it introduces the light in pumping device Pump in annular chamber, and pump light is by mix bait single mould photon crystal optical fiber ED-PCF As gain media when absorbed, erbium ion in ED-PCF forms population inversion, finally produced in the ED-PCF by Swash radiation and export laser, by pumping laser wavelength convert into rare-earth-ion-doped excitation wavelength.The work of 2 Polarization Controller PC With being all identical, all by adjusting its anglec of rotation, realize that polarization state is adjusted, and then obtain desired output wavelength.PD-ISO For polarization-dependent isolator, it is equivalent to the combination of polarizer and isolator, and the loss to different polarization state light is different.By By experienced different phase shifts during Polarization Controller PC, its polarization state changes the linearly polarized light of different wave length after PD-ISO Difference, forms the elliptically polarized light of different polarization states.The difference of polarization state is transformed into the difference of loss by PD-SIO, that is, Say, adjustings of the Polarization Controller PC to different wave length polarization state is equivalent to the adjusting to its cavity loss, so as to fulfill wavelength Tunable output.The effect of coupler Coupler is light splitting effect, its coupling ratio is 90:10,10% is used as output terminal, i.e., 10% light output is used to detect, and 90% light, which is left in annular chamber, to be continued to shake, and improves optical cavity fineness, realizes stabilized lasers Output.The centre wavelength tunable range of unrelated tunable optic filter TF is polarized from 1525~1570nm, 3dB tunable bandwidths from 1~18nm is continuously adjustable.TF effects mainly control tunable range, tuning and the filter action of optical maser wavelength, its is tunable Step-length about 1nm.After adding two Polarization Controller PC, the output wavelength tuning step-length for mixing bait Photonic Crystal Fiber Lasers is reachable 0.02nm, output wavelength can be aligned completely with gas absworption peak.If output wavelength and the wavelength phase corresponding to gas absworption peak Every 0.03nm, then its absorption intensity may decay half, and the absorption intensity corresponding to light source output wavelength is stronger, and light source is to gas The detectivity of body is stronger.Specifically, by appropriate adjusting TF and PC, obtain output center wavelength and be located at 1550.044nm The stabilization Single wavelength output at place.When pump power reaches 600mW, signal-to-noise ratio reaches maximum 63dB, this high signal-to-noise ratio Show, which has fabulous mode selection capability, this is very beneficial for gas sensing.Thus, the embodiment of the present invention carries The ED-PCFL of confession has very strong practicality.
It is provided in an embodiment of the present invention to mix bait Photonic Crystal Fiber Lasers ED-PCFL tables in the test process of 30min Good stability is revealed, maximum wavelength drift only 8pm, peak power standard deviation is about 0.03dB.System ratio is higher than 63dB, 3dB line widths are 0.02nm, have exceeded the stabilization Single wavelength vibration of the tunable wave length scope of 40nm.Wavelength can be aligned with high precision Object gas absworption peak, realizes that stabilized lasers of the wavelength stepping length less than 0.5nm export, this shows the laser in laser gas Body senses and sensory field of optic fibre has very big application potential.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.

Claims (6)

1. one kind mixes bait Photonic Crystal Fiber Lasers, it is characterised in that including wavelength division multiplexer, mixes bait single-mode photon crystal light Fibre, the first Polarization Controller, polarization-dependent isolator, the second Polarization Controller, coupler, wave filter and pump laser, institute State wavelength division multiplexer, it is described mix bait single mould photon crystal optical fiber, first Polarization Controller, the polarization-dependent isolator, Second Polarization Controller, the coupler connect to form annular chamber with the wave filter by optical fiber, the wavelength-division multiplex The external pump laser of device;
The pumping device, for producing pump light;
The wavelength division multiplexer, for the pump light to be introduced the annular chamber;It is additionally operable to believe the different multi-beam of wavelength Number a branch of optical signal of synthesis, and by the optical signal transmission that beam obtains is closed bait single mould photon crystal optical fiber is mixed to described;
It is described to mix bait single mould photon crystal optical fiber, under the radiation of the pump light, exporting exciting light;
First Polarization Controller, the polarization-dependent isolator and second Polarization Controller, for the excitation Light carries out polarization state adjusting, obtains polarised light;
The coupler, for being split according to preset proportion to the polarised light, obtains output light and concussion light, and by institute State output light output to be detected, give the concussion optical transport to the wave filter;
The wave filter, for carrying out wavelength regulation, tuning and filtering process respectively to the concussion light, by the concussion after processing Optical transport gives the wavelength division multiplexer.
2. mix bait Photonic Crystal Fiber Lasers as claimed in claim 1, it is characterised in that the pumping device is 980nm half Conductor laser.
3. mix bait Photonic Crystal Fiber Lasers as claimed in claim 1, it is characterised in that first Polarization Controller is 3 ring Polarization Controllers.
4. mix bait Photonic Crystal Fiber Lasers as claimed in claim 1, it is characterised in that second Polarization Controller is 3 ring Polarization Controllers.
5. mix bait Photonic Crystal Fiber Lasers as claimed in claim 1, it is characterised in that the output light and the concussion The ratio of light is 10:90.
6. mix bait Photonic Crystal Fiber Lasers as claimed in claim 1, it is characterised in that wavelength centered on the wave filter 1525~1570nm of tunable range, polarization continuously adjustable 1~18nm of three dB bandwidth is without related tunable optic filter.
CN201810035663.5A 2018-01-15 2018-01-15 Erbium-doped photonic crystal fiber laser Active CN107968312B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113097844A (en) * 2021-04-02 2021-07-09 电子科技大学 Single frequency Q-switching laser

Citations (4)

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Publication number Priority date Publication date Assignee Title
CN202906186U (en) * 2012-07-26 2013-04-24 深圳大学 Multi-wavelength erbium-doped photonic crystal fiber laser
CN203551924U (en) * 2013-10-18 2014-04-16 深圳大学 Erbium-doped photonic crystal fiber amplifier
CN104283096A (en) * 2014-10-21 2015-01-14 天津理工大学 Multi-wavelength Er-doped optical fiber laser device with wavelength interval continuously adjustable
CN205377007U (en) * 2015-12-27 2016-07-06 厦门彼格科技有限公司 Erbium doped fiber amplifier of high -efficient pumping

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202906186U (en) * 2012-07-26 2013-04-24 深圳大学 Multi-wavelength erbium-doped photonic crystal fiber laser
CN203551924U (en) * 2013-10-18 2014-04-16 深圳大学 Erbium-doped photonic crystal fiber amplifier
CN104283096A (en) * 2014-10-21 2015-01-14 天津理工大学 Multi-wavelength Er-doped optical fiber laser device with wavelength interval continuously adjustable
CN205377007U (en) * 2015-12-27 2016-07-06 厦门彼格科技有限公司 Erbium doped fiber amplifier of high -efficient pumping

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113097844A (en) * 2021-04-02 2021-07-09 电子科技大学 Single frequency Q-switching laser

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