CN105071204A - High repetition frequency pulse fiber laser - Google Patents
High repetition frequency pulse fiber laser Download PDFInfo
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- CN105071204A CN105071204A CN201510419424.6A CN201510419424A CN105071204A CN 105071204 A CN105071204 A CN 105071204A CN 201510419424 A CN201510419424 A CN 201510419424A CN 105071204 A CN105071204 A CN 105071204A
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Abstract
The invention discloses a module for a high repetition frequency pulse fiber laser, a preparation method, and a pulse laser based on the module. Two-dimensional photonic functional materials are deposited on the surface of a micro-nano fiber to prepare a fiber photonic device, a proper filter is selected to be welded with the fiber photonic device to form the module for the high repetition frequency pulse fiber laser, the module is applied to the fiber laser, and high repetition frequency pulse laser output with the repetition rate of hundreds of GHz is realized. According to the scheme of the pulse laser with the all-fiber structure, the structure is simple, the laser output is stable, the pumping power is low, and the price and the cost are low.
Description
Technical field
The present invention relates to laser technology field, specifically, is a kind of Gao Zhongying pulse optical fiber based on optical fiber photonic device and filter module.
Background technology
Gao Zhongying pulse optical fiber receives much concern in the important application of the optical fields such as nonlinear optics, frequency comb, optical communication because of it.Active mode locking laser and laser with active-passive lock mould can both obtain Gao Zhongying pulse, but because active mode locking laser needs to adopt modulator, complex structure and be limited to electronic bandwidth, therefore many methods that can produce Gao Zhongying pulse are all based on laser with active-passive lock mould.And in laser with active-passive lock mould, the method producing Gao Zhongying pulse can be classified as three classes: the first kind, by shortening, chamber is long improves pulse recurrence rate, i.e. short cavity method; Equations of The Second Kind, produces Gao Zhongying pulse by harmonic mode locking; 3rd class, utilizes four wave mixing to produce Gao Zhongying pulse.Usually, short cavity method and harmonic mode locking are merely able to the Gao Zhongying pulse obtaining tens of GHz.For the acquisition of the Gao Zhongying pulse of hundred GHz ranks, current employing be filtering induction four wave mixing method, in one of first technology, the four-wave mixing effect of being induced by filtering in silicon-based micro ring resonator incoming fiber optic laser is utilized to obtain the Gao Zhongying pulse of hundred GHz ranks, but the complex manufacturing process of silicon-based micro ring resonator and coupling fiber loss are large, can not realize all optical fibre structure.In first technology two, utilize the four-wave mixing effect that Mach-Zehnder interferometer is induced, achieve Gao Zhongying pulse, but pump power required for laser is very high.So produce Gao Zhongying pulse this has important Practical significance on the one hand when exploring all-fiber, low pumping.
Summary of the invention
The present invention seeks to improve the deficiency of prior art on hundred GHz rank Gao Zhongying pulse acquiring technology, provide that structure is simple, with low cost, the module of the Gao Zhongying pulse optical fiber of stable performance, and provide and export to realize high recurrent frequency pulse laser based on the circular cavity optic fibre laser of this module and linear cavity fiber laser.
It is as follows that the present invention obtains hundred GHz rank Gao Zhongying pulse theories: two-dimensional photon functional material has very high nonlinear refractive index, be deposited on itself there is certain nonlinear effect micro-nano fiber on when forming optical fiber photonic device, nonlinear effect can be improved significantly, thus meet the condition of four wave mixing generation better.Four wave mixing is a parametric process from proper PGC demodulation, when four wave mixing occurs, in high non-linearity environment, two bundle pump lights produce a branch of flashlight and a branch of ideler frequency light, this flashlight and ideler frequency light continue to produce flashlight and ideler frequency light as pump light again, the process of a formation like this cascade, the light that these four wave mixings produce has inherent PGC demodulation relation, thus four wave mixing can be utilized to realize locked mode.In resonant cavity, access comb filter penetrate spectrum select swashing, laser is operated in be conducive to the multi-wavelength oscillation state of four wave mixing locked mode.So, reach four wave mixing condition by the comb spectrum of filter and the interaction of two-dimensional photon functional material, thus obtain the pulse train of the GHz ranks up to a hundred conformed to Free Spectral Range.Based on above-mentioned principle, technical scheme of the present invention is as follows:
A kind of Gao Zhongying pulse optical fiber module, comprising: the optical fiber photonic device connected in welding mode and filter, described optical fiber photon device surface deposits two-dimensional photon functional material sedimentary deposit.
Further, described two-dimensional photon functional material is Graphene or topological insulator.
Further, described optical fiber photonic device bores by forming waist after fused biconical taper the micro-nano fiber that diameter is 5-20 micron by monomode fiber.
Further, described filter is comb filter, and its filtering interval is 0.8-4nm.
A preparation method for Gao Zhongying pulse optical fiber module, comprises following steps:
(1) monomode fiber is peelled off coat adopts the method for fused biconical taper to draw cone to become micro-nano fiber optical fiber later.
(2) with being dissolved with the solution of two-dimensional photon functional material after ultrasonication, by optics sedimentation, two-dimensional photon functional material being deposited to described micro-nano fiber surface, being prepared into optical fiber photonic device.
(3) filter and the optical fiber photonic device for preparing are welded together by the mode of melting make Gao Zhongying pulse optical fiber module.
As a kind of preferred version, Graphene/dimethyl formamide dispersion liquid or the concentration of to be concentration the be 0.05-0.25mg/ml of the solution being dissolved with two-dimensional photon functional material described in step (2) are 0.018-0.1mg/ml topological insulator/acetone soln.
Based on a pulse laser for Gao Zhongying pulse optical fiber module, comprising: pumping source resonant cavity, wherein, in resonant cavity, be provided with described Gao Zhongying pulse optical fiber module.
As a kind of preferred version, described resonant cavity is annular chamber, connects wavelength division multiplexer, gain fibre, polarization irrelevant isolator, Polarization Controller, Gao Zhongying pulse optical fiber module and coupler successively form annular chamber with optical fiber head and the tail; Pumping source is connected with another input port of described wavelength division multiplexer by optical fiber; Another output port of coupler is as the output port of laser.
As another kind of preferred version, described resonant cavity is linear cavity, connects the first coupler, wavelength division multiplexer, gain fibre, Polarization Controller, Gao Zhongying pulse optical fiber module and the second coupler successively with optical fiber; Pumping source is connected by the another port of optical fiber with described wavelength division multiplexer; Wherein, the first coupler is the coupler of the 50:50 of 2*2, by two port Fiber connection of wherein one end, forms mirror function; Second coupler is the coupler of the 40:60 of 2*2, and by two port Fiber connection of wherein one end, form mirror function, another 40% port is as output port.
Compared with prior art, tool of the present invention has the following advantages:
This is a kind of hundred GHz rank high repetition frequency fiber lasers of all optical fibre structure, and the connection of all devices of laser all adopts the mode of welding, considerably reduces junction loss, reduces the requirement to pump power; The Gao Zhongying pulse optical fiber modular structure being used for producing four wave mixing is simple, and the Gao Zhongying pulse that the laser based on this module obtains has good stability; The preparation process of whole laser does not have complicated manufacture craft, with low cost.
Accompanying drawing explanation
The optics deposition method installation drawing of Fig. 1, one embodiment of the present of invention;
The micro-nano fiber deposited graphite alkene schematic diagram of Fig. 2, one embodiment of the present of invention;
The Gao Zhongying pulse optical fiber module diagram of Fig. 3, one embodiment of the present of invention;
The annular chamber fiber pulse laser schematic diagram based on Gao Zhongying pulse optical fiber module of Fig. 4, one embodiment of the present of invention;
The linear cavity fiber pulse laser schematic diagram based on Gao Zhongying pulse optical fiber module of Fig. 5, one embodiment of the present of invention;
The spectrogram based on Graphene and annular chamber scheme laser Output of laser of Fig. 6, one embodiment of the present of invention;
The autocorrelation sequence figure based on Graphene and annular chamber scheme laser Output of laser of Fig. 7, one embodiment of the present of invention;
The spectrogram based on topological insulator and annular chamber scheme laser Output of laser of Fig. 8, one embodiment of the present of invention;
The autocorrelation sequence figure based on topological insulator and annular chamber scheme laser Output of laser of Fig. 9, one embodiment of the present of invention;
The spectrogram based on Graphene and linear cavity scheme laser Output of laser of Figure 10, one embodiment of the present of invention;
The autocorrelation sequence figure based on Graphene and linear cavity scheme laser Output of laser of Figure 11, one embodiment of the present of invention.
Embodiment
Specific embodiment 1:
Also by reference to the accompanying drawings the preparation method of Gao Zhongying pulse optical fiber module of the present invention is described in further detail below by specific embodiment.
(1), after general single mode fiber being peelled off coat, under the effect of alcolhol burner, the method for fused biconical taper is adopted to be drawn by optical fiber cone to become the micro-nano fiber that diameter is 5-20 μm;
(2) will the input of the micro-nano fiber of having bored be drawn to connect spontaneous radiation light source and erbium-doped fiber amplifier by ring flange, output connects light power meter, minimum for fibre diameter position is fixed on the glass sheet, places under the microscope, to supervise deposition process.The method device used is as shown in figure (1);
(3) be the Graphene/dimethyl formamide dispersion liquid of 0.05mg/ml or the topological insulator/acetone soln ultrasonication 20 minutes of 0.08mg/ml by concentration, with glue head dropper, an above-mentioned solution dripped to the minimum place of micro-nano fiber diameter; Open spontaneous radiation light source and erbium-doped fiber amplifier (EDFA), make Graphene/topological insulator granule be adsorbed on micro-nano fiber surface under the effect of light field.To observe around micro-nano fiber after attached full granule in microscope, unnecessary solution is sponged, with the loss of light power meter measured power after naturally drying, if loss is less than 4dB with blotting paper, then prepared by optical fiber photonic device, as shown in figure (2);
(4) be that the comb filter of 0.8nm and the optical fiber photonic device for preparing are welded together and are prepared into Gao Zhongying pulse optical fiber module, as shown in figure (3) by filtering interval.
Also by reference to the accompanying drawings Gao Zhongying pulse optical fiber of the present invention is described in further detail below by specific embodiment.
Specific embodiment 2:
In the present embodiment, the structure of laser adopts ring cavity structure.Connect wavelength division multiplexer, gain fibre (Er-doped fiber), polarization irrelevant isolator, Polarization Controller, Gao Zhongying pulse optical fiber module and coupler successively with optical fiber head and the tail and form annular chamber; Pumping source is connected by the another port of optical fiber with described wavelength division multiplexer.Another output port of coupler is as the output port of laser, and the annular cavity laser put up is as shown in figure (4).
When Gao Zhongying pulse optical fiber module adopts that the optical fiber photonic device of deposited graphite alkene and filtering interval are the comb filter of 0.8nm, pump power reaches 22mW, spectrometer is connected at the output of coupler, can observe stable multi-wavelength spectrum on spectrometer, spectrum as shown in Figure 6; When the output of coupler connects autocorrelation function analyzer, autocorrelation sequence as shown in Figure 7.
When Gao Zhongying pulse optical fiber module adopts that the deposition optical fiber photonic device of topological insulator and filtering interval are the comb filter of 0.8nm, pump power reaches 22mW, as shown in Figure 8, autocorrelation sequence as shown in Figure 9 for its spectrogram.Through data analysis, the repetition rate of the pulse train of output reaches 100GHz (pulse spacing 10ps).
Specific embodiment 3:
In the present embodiment, the structure of laser adopts linear cavity structure.The first coupler, wavelength division multiplexer, gain fibre (Er-doped fiber), Polarization Controller, Gao Zhongying pulse optical fiber module and the second coupler is connected successively with optical fiber; Pumping source is connected with the another port of wavelength division multiplexer by optical fiber; Wherein, the first coupler is the coupler of the 50:50 of 2*2, by two port Fiber connection of wherein one end, forms mirror function; Second coupler is the coupler of the 40:60 of 2*2, and by two port Fiber connection of wherein one end, form mirror function, another 40% port is as output port.Put up linear laser cavity as shown in figure (5).
When Gao Zhongying pulse optical fiber module adopts that the optical fiber photonic device of deposited graphite alkene and filtering interval are the comb filter of 0.8nm, pump power reaches 169mW time, stable multi-wavelength spectrum appears in the spectrometer of the output of coupler, and spectrum is as shown in figure (10); When the output of coupler connects autocorrelation function analyzer, autocorrelation sequence is as shown in figure (11).Through data analysis, the repetition rate of the pulse train of output reaches 100GHz (pulse spacing 10ps).
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations, as changed the type of filter, use the filter of different size or the concentration changing two-dimensional photon functional material solution etc.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a Gao Zhongying pulse optical fiber module, is characterized in that, comprising:
Surface deposition has the optical fiber photonic device of two-dimensional photon functional material; And
By the filter that melting is connected with described optical fiber photonic device.
2. Gao Zhongying pulse optical fiber module according to claim 1, is characterized in that, described optical fiber photonic device by monomode fiber by forming the micro-nano fiber that diameter is 5-20 micron after fused biconical taper.
3. Gao Zhongying pulse optical fiber module according to claim 1, is characterized in that, described two-dimensional photon functional material is Graphene or topological insulator.
4. Gao Zhongying pulse optical fiber module according to claim 3, is characterized in that, the comb filter of described filter to be filtering interval be 0.8-4nm.
5. a preparation method for the Gao Zhongying pulse optical fiber module as described in any one of claim 1-4 claim, is characterized in that comprising following steps:
Step one, monomode fiber is peelled off coat, optical fiber fused tapering is become micro-nano fiber.
Step 2, with being dissolved with the solution of two-dimensional photon functional material after ultrasonication, two-dimensional photon functional material being deposited to the micro-nano fiber surface described in step one by optics sedimentation, being prepared into optical fiber photonic device.
Step 3, filter and the optical fiber photonic device for preparing be welded together and make Gao Zhongying pulse optical fiber module.
6. the preparation method of Gao Zhongying pulse optical fiber module according to claim 5, it is characterized in that, described in be dissolved with two-dimensional photon functional material solution be concentration be the Graphene/dimethyl formamide dispersion liquid of 0.05-0.25mg/ml or the topological insulator/acetone soln of 0.018-0.1mg/ml.
7. the pulse laser based on the Gao Zhongying pulse optical fiber module as described in claim 1-4, it is characterized in that, comprise pumping source resonant cavity, wherein, in resonant cavity, be provided with the Gao Zhongying pulse optical fiber module as described in claim arbitrary in claim 1-4.
8. pulse laser according to claim 7, it is characterized in that, described resonant cavity is annular chamber, connects wavelength division multiplexer, gain fibre, polarization irrelevant isolator, Polarization Controller, Gao Zhongying pulse optical fiber module and coupler successively form annular chamber with optical fiber head and the tail; Described pumping source is connected by the another port of optical fiber with described wavelength division multiplexer; Another output port of described coupler is as the output port of laser.
9. pulse laser according to claim 7, it is characterized in that, described resonant cavity is linear cavity, connects the first coupler, wavelength division multiplexer, gain fibre, Polarization Controller, Gao Zhongying pulse optical fiber module and the second coupler successively form linear cavity with optical fiber; Pumping source is connected with the another port of wavelength division multiplexer by optical fiber; Wherein, described first coupler is the coupler of the 50:50 of 2*2, by two port Fiber connection of wherein one end, forms mirror function; Described second coupler is the coupler of the 40:60 of 2*2, and by two port Fiber connection of wherein one end, form mirror function, another 40% port is as laser output mouth.
10. the pulse laser according to Claim 8 described in-9 arbitrary claims, is characterized in that, described gain fibre is Er-doped fiber, and described pumping source wavelength is 980nm.
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| CN201510419424.6A CN105071204B (en) | 2015-06-25 | 2015-07-16 | High repetition pulse optical fiber laser |
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| CN201510363111 | 2015-06-25 | ||
| CN2015103631113 | 2015-06-25 | ||
| CN201510419424.6A CN105071204B (en) | 2015-06-25 | 2015-07-16 | High repetition pulse optical fiber laser |
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| CN105071204B CN105071204B (en) | 2018-10-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785861A (en) * | 2017-03-01 | 2017-05-31 | 太原理工大学 | Gao Zhongying ultra-short pulse generation method and device based on Graphene microcavity locked mode |
| CN110510865A (en) * | 2019-08-29 | 2019-11-29 | 上海理工大学 | A kind of single layer two-dimensional material and its photoactivation method in the preparation of micro-nano fiber surface |
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| US7298768B1 (en) * | 2004-11-16 | 2007-11-20 | Np Photonics, Inc | Thulium-doped heavy metal oxide glasses for 2UM lasers |
| US20110222562A1 (en) * | 2009-07-24 | 2011-09-15 | Advalue Photonics, Inc. | Mode-Locked Two-Micron Fiber Lasers |
| US20110280263A1 (en) * | 2008-06-26 | 2011-11-17 | Khanh Kieu | Saturable absorber using a fiber taper embedded in a nanostructure/polymer composite and lasers using the same |
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2015
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Patent Citations (3)
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| US7298768B1 (en) * | 2004-11-16 | 2007-11-20 | Np Photonics, Inc | Thulium-doped heavy metal oxide glasses for 2UM lasers |
| US20110280263A1 (en) * | 2008-06-26 | 2011-11-17 | Khanh Kieu | Saturable absorber using a fiber taper embedded in a nanostructure/polymer composite and lasers using the same |
| US20110222562A1 (en) * | 2009-07-24 | 2011-09-15 | Advalue Photonics, Inc. | Mode-Locked Two-Micron Fiber Lasers |
Non-Patent Citations (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785861A (en) * | 2017-03-01 | 2017-05-31 | 太原理工大学 | Gao Zhongying ultra-short pulse generation method and device based on Graphene microcavity locked mode |
| CN110510865A (en) * | 2019-08-29 | 2019-11-29 | 上海理工大学 | A kind of single layer two-dimensional material and its photoactivation method in the preparation of micro-nano fiber surface |
| CN110510865B (en) * | 2019-08-29 | 2022-01-25 | 上海理工大学 | Single-layer two-dimensional material prepared on surface of micro-nano optical fiber and photoactivation method thereof |
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