CN103825171A - Fourier locking mode optical fiber laser based on photon crystal fibers - Google Patents
Fourier locking mode optical fiber laser based on photon crystal fibers Download PDFInfo
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- CN103825171A CN103825171A CN201410086544.4A CN201410086544A CN103825171A CN 103825171 A CN103825171 A CN 103825171A CN 201410086544 A CN201410086544 A CN 201410086544A CN 103825171 A CN103825171 A CN 103825171A
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Abstract
The invention relates to a Fourier locking mode optical fiber laser based on photon crystal fibers. The Fourier locking mode optical fiber laser consists of an erbium-doped optical fiber amplifier, a photon crystal fiber, a dispersion shifted optical fiber, a polarization controller, a dispersion compensation fiber, an optical isolator, a 20:80 optical coupler, a tunable Fabry-Perot filter and a signal generator, and comprises a closed circuit formed by series connection of optical fibers, wherein the power ratio of the output end b and the output c of the optical coupler is 20:80; the output end e of the tunable Fabry-Perot filter is connected with the signal generator 9 through an optical fiber, and the output end b of the optical coupler is used as the output of the entire laser. The fourier locking mode optical fiber laser has the advantages of simplicity in structure, low in cost, high modulation speed, wide bandwidth, and can work stably under the normal temperature.
Description
Technical field
The invention belongs to territory mode locked fiber laser in optical fiber communication and photoelectron technology field, particularly a kind of Fu.
Background technology
Mode locked fiber laser has important researching value in fields such as ultrafast optics, nonlinear optics, Photobiology, optical information processing and laser processings.Since entering the nineties, large quantity research has been done in theory and the experiment of people to mode-locked laser, brand-new design concept is proposed in theory, a series of locked mode theories such as such as active mode locking, harmonic mode locking, rational number harmonic mode-locking, additional (or collision) are pulse mode-locked, injecting lock mould, nonlinear optics environment locked mode, nonlinear polarization rotation locked mode, semiconductor saturable absorber locked mode.
Mode locked fiber laser is divided into Active Mode-locked Fiber Laser and the large class of passive mode-locking fiber laser two according to locked mode principle.For traditional Active Mode-locked Fiber Laser, its modulation system is mainly divided into following two kinds: amplitude modulation(PAM) and phase-modulation.Therefore Active Mode-locked Fiber Laser adds amplitude modulator or phase-modulator conventionally exactly in laser resonant cavity, utilize the signal of telecommunication (normally high-frequency radiofrequency signal) to carry out periodic modulation to resonant cavity inner laser, in the time that frequency modulating signal and laser resonant cavity fundamental frequency meet certain relation, can realize mode-locked laser output.Two kinds of modulation techniques of tradition Active Mode-locked Fiber Laser are carried out periodic modulation for laser resonant cavity inner laser amplitude, phase place respectively, aspect realization end light-pulse generator, all obtaining very large success, and being wavelength (frequency) to laser resonant cavity inner laser, Fourier locked mode (FDML) mode carries out periodic modulation, 2006, realize the tuning fiber laser of wavelength high speed and provided the example application in optical coherence imaging (OCT:Optical Coherence Tomography) and Fibre Optical Sensor in FDML mode in Fu.
Summary of the invention
The object of the invention is for above-mentioned technical Analysis, a kind of low cost, compact conformation, tunable Fourier mode locked fiber laser are provided.
Technical scheme of the present invention:
Territory mode locked fiber laser in a kind of Fu, is made up of erbium-doped fiber amplifier, photonic crystal fiber, dispersion shifted optical fiber, Polarization Controller, dispersion compensating fiber, optical isolator, 20:80 optical coupler, tunable Fabry-perot filter and signal generator; Optical coupler is provided with three ports and is respectively input a, output b and output c, and the Output optical power ratio of output b and output c is 20:80; Tunable Fabry-perot filter is provided with three ports and is respectively input d, output e and Ausgang; The input d of the input a of erbium-doped fiber amplifier, photonic crystal fiber, dispersion shifted optical fiber, Polarization Controller, dispersion compensating fiber, optical isolator, 20:80 optical coupler and output c, tunable Fabry-perot filter and Ausgang are connected in series by optical fiber and form closed-loop path; The output e of tunable Fabry-perot filter is connected with signal generator 9 by optical fiber, and the output b of optical coupler is as the output of whole laser.
Operation principle of the present invention:
In this Fu, territory mode locked fiber laser produces wideband gain spectrum by the erbium-doped fiber amplifier without threshold value, then carries out video stretching by one section of photonic crystal fiber, to increase the wavelength modulation range of tunable optic filter; Reduce the fundamental frequency of whole laser by one section of dispersion shifted optical fiber, to adapt to the modulation range of tunable Fabry-perot filter; By adjusting Polarization Controller, make laser in resonance condition with the polarization state that changes laser with the output frequency of adjusting signal generator; Optical isolator makes light in laser cavity in Unidirectional state, 20% the port output of coupler is for the spectrum monitoring of light and the monitoring of time domain waveform, the anomalous dispersion that optics in dispersion compensating fiber compensation laser cavity and monomode fiber produce, to reduce the live width of Output of laser.
Advantage of the present invention is: in this Fu, territory mode locked fiber laser is simple in structure, cost is low, modulation rate is high, it is wide to be with, steady operation at normal temperatures.
Accompanying drawing explanation
Fig. 1 is Fourier mode locked fiber laser structural representation of the present invention.
In figure: 1. erbium-doped fiber amplifier 2. photonic crystal fiber 3. dispersion shifted optical fibers
4. Polarization Controller 5. dispersion compensating fiber 6. optical isolator 7. optical couplers
8. tunable Fabry-perot filter 9. signal generators.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Embodiment 1:
Territory mode locked fiber laser in a kind of Fu, is made up of erbium-doped fiber amplifier 1, photonic crystal fiber 2, dispersion shifted optical fiber 3, Polarization Controller 4, dispersion compensating fiber 5, optical isolator 6,20:80 optical coupler 7, tunable Fabry-perot filter 8 and signal generator 9; Optical coupler 7 is provided with three ports and is respectively input a, output b and output c, and the Output optical power ratio of output b and output c is 20:80; Tunable Fabry-perot filter 8 is provided with three ports and is respectively input d, output e and Ausgang; The input d of the input a of erbium-doped fiber amplifier 1, photonic crystal fiber 2, dispersion shifted optical fiber 3, Polarization Controller 4, dispersion compensating fiber 5, optical isolator 6,20:80 optical coupler 7 and output c, tunable Fabry-perot filter 8 and Ausgang are connected in series by optical fiber and form closed-loop path; The output e of tunable Fabry-perot filter 8 is connected with signal generator 9 by optical fiber, and the output b of optical coupler 7 is as the output of whole laser and for the spectrum monitoring of light and the monitoring of time domain waveform.
In this embodiment, erbium-doped fiber amplifier model is X3200; 1 meter, 10 meters, 2 meters respectively of the length of photonic crystal fiber, dispersion shifted optical fiber, dispersion compensating fiber; In Polarization Controller, the length of monomode fiber is 3 meters; The model of optical isolator is IO-2.5-1550-VLP, and the model of optical coupler is SC-1550-20/80-0, and the model of tunable Fabry-perot filter is FFP-TF2, and the model of signal generator is DG4000.
Monitor by oscilloscope and the many locked modes of spectrometer from the output b of 20:80 optical coupler, monitoring result shows: harmonic mode locking repetition rate can reach 100MHz, and pulse duration can reach 1ps, and can normally work at normal temperatures.
Claims (1)
1. a territory mode locked fiber laser in Fu, is characterized in that: be made up of erbium-doped fiber amplifier, photonic crystal fiber, dispersion shifted optical fiber, Polarization Controller, dispersion compensating fiber, optical isolator, 20:80 optical coupler, tunable Fabry-perot filter and signal generator; Optical coupler is provided with three ports and is respectively input a, output b and output c, and the Output optical power ratio of output b and output c is 20:80; Tunable Fabry-perot filter is provided with three ports and is respectively input d, output e and Ausgang; The input d of the input a of erbium-doped fiber amplifier, photonic crystal fiber, dispersion shifted optical fiber, Polarization Controller, dispersion compensating fiber, optical isolator, 20:80 optical coupler and output c, tunable Fabry-perot filter and Ausgang are connected in series by optical fiber and form closed-loop path; The output e of tunable Fabry-perot filter is connected with signal generator 9 by optical fiber, and the output b of optical coupler is as the output of whole laser.
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| CN201410086544.4A CN103825171A (en) | 2014-03-11 | 2014-03-11 | Fourier locking mode optical fiber laser based on photon crystal fibers |
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| CN201410086544.4A CN103825171A (en) | 2014-03-11 | 2014-03-11 | Fourier locking mode optical fiber laser based on photon crystal fibers |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785860A (en) * | 2016-12-09 | 2017-05-31 | 清华大学 | Self-stabilising frequency domain mode-locked laser based on frequency self-reaction |
| CN109038191A (en) * | 2018-08-18 | 2018-12-18 | 深圳华中科技大学研究院 | It is a kind of to compose limited Fourier mode locked fiber laser |
| CN109149341A (en) * | 2018-08-28 | 2019-01-04 | 中国联合网络通信集团有限公司 | Passive Harmonic mode-locked fiber laser |
| CN109217086A (en) * | 2018-11-20 | 2019-01-15 | 天津理工大学 | Tunable wave length passive mode-locking ytterbium-doping optical fiber laser based on volume Bragg grating |
| CN109412007A (en) * | 2017-08-18 | 2019-03-01 | 香港理工大学深圳研究院 | A kind of Fourier's mode-locked laser |
| CN111600188A (en) * | 2019-02-21 | 2020-08-28 | 香港理工大学深圳研究院 | Fourier mode-locked laser |
| CN114978326A (en) * | 2021-11-05 | 2022-08-30 | 北京理工大学 | Broadband arbitrary waveform optical generator chip |
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| CN102916329A (en) * | 2012-11-09 | 2013-02-06 | 天津理工大学 | Fourier domain mode locking optical fiber laser device |
| CN203014154U (en) * | 2012-11-23 | 2013-06-19 | 广东汉唐量子光电科技有限公司 | High power fiber laser amplifier |
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2014
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785860A (en) * | 2016-12-09 | 2017-05-31 | 清华大学 | Self-stabilising frequency domain mode-locked laser based on frequency self-reaction |
| CN109412007A (en) * | 2017-08-18 | 2019-03-01 | 香港理工大学深圳研究院 | A kind of Fourier's mode-locked laser |
| CN109038191A (en) * | 2018-08-18 | 2018-12-18 | 深圳华中科技大学研究院 | It is a kind of to compose limited Fourier mode locked fiber laser |
| CN109149341A (en) * | 2018-08-28 | 2019-01-04 | 中国联合网络通信集团有限公司 | Passive Harmonic mode-locked fiber laser |
| CN109217086A (en) * | 2018-11-20 | 2019-01-15 | 天津理工大学 | Tunable wave length passive mode-locking ytterbium-doping optical fiber laser based on volume Bragg grating |
| CN111600188A (en) * | 2019-02-21 | 2020-08-28 | 香港理工大学深圳研究院 | Fourier mode-locked laser |
| CN114978326A (en) * | 2021-11-05 | 2022-08-30 | 北京理工大学 | Broadband arbitrary waveform optical generator chip |
| CN114978326B (en) * | 2021-11-05 | 2024-01-02 | 北京理工大学 | Broadband arbitrary waveform optical generator chip |
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Application publication date: 20140528 |