CN106911061A - Tunable Brillouin's Raman multi-wavelength optical fiber laser - Google Patents
Tunable Brillouin's Raman multi-wavelength optical fiber laser Download PDFInfo
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- CN106911061A CN106911061A CN201710224707.4A CN201710224707A CN106911061A CN 106911061 A CN106911061 A CN 106911061A CN 201710224707 A CN201710224707 A CN 201710224707A CN 106911061 A CN106911061 A CN 106911061A
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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
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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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094042—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a fibre laser
- H01S3/094046—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a fibre laser of a Raman fibre laser
-
- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094096—Multi-wavelength pumping
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
Tunable Brillouin's Raman multi-wavelength optical fiber laser,Belong to fiber laser technology field,In order to solve the problems, such as existing multiple-wavelength laser,Tunable Brillouin's pump light source is connected with the first port a of photo-coupler,The second port b of photo-coupler is connected with the 3rd port e3 of the first optical circulator,3rd port c of photo-coupler is connected with the first port e1 of the first optical circulator,4th port d of photo-coupler is connected with spectroanalysis instrument,The second port e2 of the first optical circulator is connected with the first port f of wavelength division multiplexer,The second port g of wavelength division multiplexer is connected with raman pump source,The public port h of wavelength division multiplexer is connected with a port of dispersion compensating fiber,The another port of dispersion compensating fiber is connected with the second port i2 of the second optical circulator,The first port i1 of the second optical circulator is connected to form loop with the 3rd port i3 of the second optical circulator,Suitable for optic communication,Light sensing,The fields such as Microwave photonics.
Description
Technical field
The present invention relates to a kind of tunable linear cavity multi-wavelength optical fiber laser based on Brillouin's Raman scattering, belong to light
Fibre laser technical field.
Background technology
With the development of high-capacity optical fiber communication network, wavelength-division multiplex technique is increasingly becoming optical-fiber network and long haul communication bone
The mainstream technology of dry net, while multi-wavelength optical fiber laser is because with output wave long number is more, good beam quality, wavelength interval can
The advantages of tune, in all many-sides such as fiber optic communication, microwave photon filter, the generation of microwave signal photon technology, Fibre Optical Sensors
Have a wide range of applications, be always in the last few years the focus of research.
Traditional multi wave length illuminating source is usually to be made up of Single wavelength distributed feed-back (DFB) semiconductor laser array, although
Technology is simple, but system is huge, with high costs, and multi-wavelength optical fiber laser can realize that interval is adjustable with number of channels
It is humorous, and simplied system structure, reduce system cost, be easy to the aspects such as system maintenance all than traditional multi wave length illuminating source have more
Plus obvious application advantage.
The research emphasis of multiple-wavelength laser be realize under normal temperature that output wavelength is adjustable, output wavelength interval can reconcile output
Channel parameters are adjustable.Realize that multi-wavelength output there are various methods in recent years, for example：There is provided using fiber grating and feed back and select
Select wavelength and realize that multi-wavelength is exported；Comb filter is inserted in resonator and realizes that multi-wavelength is exported；Fed back using shift frequency and realized
Multi-wavelength output under normal temperature；Realize that multi-wavelength is exported using polarisation hole-burning effect；Multi-wavelength is realized using fiber nonlinear effect
Output.
2008, Yan-ge Liu et al. delivered entitled " Stable room- on Optics Communications
temperature multi-wavelength lasing oscillations in a Brillouin-Raman fiber
Them are reported in the article of ring laser " and obtains a kind of multi-wavelength optical fiber laser stable at room temperature, it is used
Highly nonlinear optical fiber as Effects in Nonlinear Media with Gain, two semiconductor lasers of 1455nm as raman pump source, in experiment
They obtain the multi-wavelength output of 75 stokes lights and anti-Stokes light.Its structure is due to using two Raman pumps
Pu source, so structure is more complicated, relatively costly, the final multi-wavelength quantity for obtaining is few and wave-length coverage is untunable.
2013, Zinan Wang et al. delivered entitled " Broadband flat- on OPTICS EXPRESS
amplitude multiwavelength Brillouin-Raman fiber laser with spectral reshaping
Them are reported in the article of by Rayleigh scattering " to obtain in the multi-wavelength cloth that a kind of flat bandwidth reaches 40nm
Deep Raman multi-wavelength optical fiber laser, it uses 10km dispersion compensating fibers long as gain media, using long general of 50km
Logical single-mode fiber carries out light spectrum reshaping to multiwavelength laser, and a high-power 1480nm semiconductor laser is used as Raman pump
Source, when the power setting of raman pump source is close to 1.4W, they obtain flat bandwidth up to 40nm, number of wavelengths up to 500
Multiple multiwavelength laser output.Although their number of wavelengths is more, its experiment is higher due to pumping source power, so right
The requirement of experiment apparatus is higher, causes relatively costly.
In a word, the multi-wavelength optical fiber laser based on Brillouin's Raman scattering combines Brillouin scattering and Raman scattering
Non-linear gain, is a kind of effective ways for producing multi-wavelength to export at room temperature.
The content of the invention
The present invention is in order to solve the problems, such as existing multiple-wavelength laser, it is proposed that a kind of tunable Brillouin's Raman is more
Long wavelength fiber laser.
The present invention takes following technical scheme：
Tunable Brillouin's Raman multi-wavelength optical fiber laser, it is characterized in that, it include tunable Brillouin's pump light source,
Photo-coupler, the first optical circulator, raman pump source, wavelength division multiplexer, dispersion compensating fiber and the second optical circulator；
Tunable Brillouin's pump light source is connected with the first port a of photo-coupler, the second port b of photo-coupler and
The 3rd port e3 connections of one optical circulator, the 3rd port c of photo-coupler is connected with the first port e1 of the first optical circulator,
4th port d of photo-coupler is used as output end, the second port e2 of the first optical circulator and first port f of wavelength division multiplexer
Connection, the second port g of wavelength division multiplexer is connected with raman pump source, public port h and the dispersion compensation light of wavelength division multiplexer
Fine one end connection, the other end of dispersion compensating fiber is connected with the second port i2 of the second optical circulator, the second optical circulator
First port i1 be connected to form loop with the 3rd port i3 of the second optical circulator.
Fiber spinning controller is symmetrical structure, and the right and left is respectively provided with base, support bar and Optical Fiber Winding disk, is supported
One end of bar is welded on base upper end, and then through the center of Optical Fiber Winding disk, Optical Fiber Winding disk can rotate the other end around support bar；
Dispersion compensating fiber is wrapped between two Optical Fiber Winding disks；Dispersion benefit is distorted by controlling the anglec of rotation of Optical Fiber Winding disk
Repay optical fiber to strengthen its nonlinear effect, realize that multi-wavelength is exported.
Brillouin's pump light source is the tunable pumping source of wavelength and power.
3rd port c of the photo-coupler is 95% port, and the 4th port d is 5% port.
The centre wavelength of the raman pump source is 1455nm.
The photo-coupler, the first optical circulator, the working range of the second optical circulator are 1530nm to 1580nm.
Beneficial effects of the present invention：The laser uses tunable laser as Brillouin's pumping source, with 1455nm's
The dispersion compensating fiber of raman pump source pumping 9km together, 100m is wrapped on fiber spinning controller before dispersion compensating fiber,
For strengthening the nonlinear effect of optical fiber, linear cavity two ends are respectively used for increasing interacvity gain plus a feedback loop, are capable of achieving ripple
While long number and wave band tune, with threshold value it is low, output wave long number is more, tuning range is big the features such as.
The simple structure of the laser, low cost, the integrated fibre system that is easy to, number of wavelengths and wave band is tunable, laser is defeated
The good stability for going out.The laser is applicable to the technical fields such as optic communication, light sensing, Microwave photonics.
Brief description of the drawings
Fig. 1 is the structural representation of tunable Brillouin's Raman multi-wavelength optical fiber laser.
Fig. 2 is the three-view diagram of fiber spinning controller, and (a) is front view, and (b) is left view, and (c) is top view.
Fig. 3 (a), 3 (b), 3 (c), 3 (d), 3 (e), 3 (f) be respectively by Brillouin's pumping wavelength be set to 1545nm,
Multiwavelength laser output light spectrogram when 1550nm, 1553.32nm, 1555nm, 1560nm, 1565nm.
Specific embodiment
The present invention is described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, tunable Brillouin's Raman multi-wavelength optical fiber laser, it includes tunable Brillouin's pump light source
1st, photo-coupler 2, the first optical circulator 3, raman pump source 4, wavelength division multiplexer 5, fiber spinning controller 6, dispersion compensation light
The optical circulator 8 of fibre 7 and second.
Tunable Brillouin's pump light source 1 is connected with the first port a of photo-coupler 2 by optical fiber, and the of photo-coupler 2
Two-port netwerk b is connected with the 3rd port e3 of the first optical circulator 3 by optical fiber, the 3rd port c of photo-coupler 2 and first ring of light
The first port e1 of row device 3 is connected by optical fiber, and the 4th port d of photo-coupler 2 is seen as output end using spectroanalysis instrument 9
Survey, the second port e2 of the first optical circulator 3 is connected with the first port f of wavelength division multiplexer 5 by optical fiber, wavelength division multiplexer 5
Second port g be connected by optical fiber with raman pump source 4, the public port h of wavelength division multiplexer 5 and dispersion compensating fiber 7
One end is connected by optical fiber, and the preceding 100m of wherein dispersion compensating fiber 7 is wrapped on fiber spinning controller 6, dispersion compensation light
Fine 7 another port is connected with the second port i2 of the second optical circulator 8 by optical fiber, the first port of the second optical circulator 8
I1 is connected to form loop with the 3rd port i3 of the second optical circulator 8 by optical fiber.Connection between above-mentioned each part is used
Fused fiber splice, the output of stabilization, number of wavelengths and band tunable multiwavelength laser is obtained from the 4th port d of photo-coupler 2.
Brillouin's pump light source 1 is the tunable pumping source of wavelength and power.
3rd port c of the photo-coupler 2 is 95% port, and the 4th port d is 5% port.
The centre wavelength of the raman pump source 4 is 1455nm.
Wavelength division multiplexer 5 is the wavelength division multiplexer of 1455/1550nm.
The length of the dispersion compensating fiber 7 is 9km, wherein preceding 100m is wrapped on fiber spinning controller (6).
The photo-coupler 2, the first optical circulator 3, the working range of the second optical circulator 8 are 1530nm to 1580nm.
The working range of photo-coupler 2, the first optical circulator 3 and the second optical circulator 8 is 1530nm to 1580nm.
Fiber spinning controller 6 is symmetrical structure, and the right and left is respectively provided with base 6-1, support bar 6-3 and Optical Fiber Winding
Disk 6-4, base 6-1 is fixed by bolt 6-2, and one end of support bar 6-3 is welded on base 6-1 upper ends, and the other end then passes through light
The center of fine winding disc 6-4, Optical Fiber Winding disk 6-4 can rotate around support bar 6-3；The preceding 100m of dispersion compensating fiber 7 is wrapped in
Between two Optical Fiber Winding disk 6-4；Dispersion compensating fiber 7 is distorted to increase by controlling the anglec of rotation of Optical Fiber Winding disk 6-4
Strong its nonlinear effect, realizes that multi-wavelength is exported.
Open adjustable Brillouin's pumping source 1 and raman pump source 4, by the power setting of Brillouin's pumping source 1 for-
2.94dBm, the power setting of raman pump source 4 is 718mW.Brillouin's pump light is by entering the behind the c ports of photo-coupler 2
The e1 ports of one optical circulator 3-1, then answered by the wavelength-division of 1455/1550nm from the e2 ports output of the first optical circulator 3-1
With Brillouin scattering is produced in the dispersion compensating fiber 7 for entering 9km after device 5, raman pump light enters color by wavelength division multiplexer 5
Dissipate compensated optical fiber 7 and produce Raman scattering, the single order stokes light and Brillouin's pump direction phase produced by Brillouin scattering
Instead, single order stokes light is entered by wavelength division multiplexer 5 from the e2 ports of the first optical circulator 3-1, the first optical circulator e3
Port output enters back into the b ports of photo-coupler 2, wherein the d ports output of 5% optical signals photo-coupler 2, with spectrum point
The spectrum of the observation output of analyzer 9,95% optical signal in the c ports return cavity of photo-coupler 2 again by being circulated in addition.Transmission
The second order stoke crossed the pump light of dispersion compensating fiber 7 and produced by single order stokes light in dispersion compensating fiber 7
This light enters the i2 ports of the second optical circulator, then from the i3 ports of the second optical circulator out into the second optical circulator
I1 ports, cavity circulation is returned via the i2 ports that obtain of the second optical circulator.
The power of Brillouin's pumping and Raman pump is fixed to -2.94dBm and 718mW, in Brillouin's pumping
Cardiac wave is long to be adjusted to 1545nm, 1550nm, 1553.32nm, 1555nm, 1560nm, 1565nm respectively, obtains Fig. 3 (a) to 3 (f) institute
The spectrogram for showing, the tunable range of multiwavelength laser from 1545nm to 1565nm, corresponding number of wavelengths is respectively 245,175,
160th, 135,92 and 61, wavelength interval is about 0.072nm.
Claims (6)
1. tunable Brillouin's Raman multi-wavelength optical fiber laser, it is characterized in that, it includes tunable Brillouin's pump light source
(1), photo-coupler (2), the first optical circulator (3), raman pump source (4), wavelength division multiplexer (5), dispersion compensating fiber (7) and
Second optical circulator (8)；
Tunable Brillouin's pump light source (1) is connected with the first port a of photo-coupler (2), the second port of photo-coupler (2)
B is connected with the 3rd port e3 of the first optical circulator (3), the 3rd port c of photo-coupler (2) and the first optical circulator (3)
First port e1 is connected, the 4th port d of photo-coupler (2) as output end, the second port e2 of the first optical circulator (3) with
The first port f connections of wavelength division multiplexer (5), the second port g of wavelength division multiplexer (5) is connected with raman pump source (4), wavelength-division
The public port h of multiplexer (5) is connected with a port of dispersion compensating fiber (7), the another port of dispersion compensating fiber (7)
Second port i2 with the second optical circulator (8) is connected, the first port i1 and the second optical circulator of the second optical circulator (8)
(8) the 3rd port i3 connects to form loop.
2. tunable Brillouin's Raman multi-wavelength optical fiber laser according to claim 1, it is characterised in that fiber spinning
Controller (6) is symmetrical structure, and the right and left is respectively provided with base (6-1), support bar (6-3) and Optical Fiber Winding disk (6-4), branch
One end of strut (6-3) is welded on base (6-1) upper end, and the other end is then through the center of Optical Fiber Winding disk (6-4), Optical Fiber Winding
Disk (6-4) can rotate around support bar (6-3)；Dispersion compensating fiber (7) is wrapped between two Optical Fiber Winding disks (6-4)；Pass through
Control the anglec of rotation of Optical Fiber Winding disk (6-4) to distort dispersion compensating fiber (7) to strengthen its nonlinear effect, realize many ripples
Output long.
3. tunable Brillouin's Raman multi-wavelength optical fiber laser according to claim 1, it is characterised in that in the cloth
Deep pump light source (1) is the tunable pumping source of wavelength and power.
4. tunable Brillouin's Raman multi-wavelength optical fiber laser according to claim 1, it is characterised in that the optocoupler
3rd port c of clutch (2) is 95% port, and the 4th port d is 5% port.
5. tunable Brillouin's Raman multi-wavelength optical fiber laser according to claim 1, it is characterised in that the Raman
The centre wavelength of pumping source (4) is 1455nm.
6. tunable Brillouin's Raman multi-wavelength optical fiber laser according to claim 1, it is characterised in that the optocoupler
Clutch (2), the first optical circulator (3), the working range of the second optical circulator (8) are 1530nm to 1580nm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109698460A (en) * | 2019-02-28 | 2019-04-30 | 南京邮电大学 | A kind of multi-wavelength Brillouin-Er-doped fiber accidental laser of partly beginning to speak |
| CN111969406A (en) * | 2020-07-08 | 2020-11-20 | 南京邮电大学 | Brillouin optical frequency comb generation device and method based on Raman effect |
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| CN103036135A (en) * | 2012-12-20 | 2013-04-10 | 长春理工大学 | L wave band broadband tunable multi-wavelength optical fiber laser |
| CN103247934A (en) * | 2013-04-27 | 2013-08-14 | 长春理工大学 | Broadband tunable multi-wavelength Brillouin fiber laser |
| CN103296567A (en) * | 2013-06-08 | 2013-09-11 | 长春理工大学 | Ultra-narrow-linewidth nonlinear gain amplification multi-wavelength fiber laser |
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| CN104022428A (en) * | 2014-05-29 | 2014-09-03 | 长春理工大学 | Microwave signal source with narrow line width and high signal-to-noise ratio |
| CN204718706U (en) * | 2015-06-10 | 2015-10-21 | 贵州电网公司信息通信分公司 | A kind of high sensitivity optical fiber temp measuring system |
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| US20110038035A1 (en) * | 2008-01-18 | 2011-02-17 | European Organisation For Astronomical Research In The Southern Hemisphere | Narrow band fiber raman optical amplifier |
| CN103036135A (en) * | 2012-12-20 | 2013-04-10 | 长春理工大学 | L wave band broadband tunable multi-wavelength optical fiber laser |
| CN103901696A (en) * | 2012-12-26 | 2014-07-02 | 中国兵器装备研究院 | Nonlinear-effect restraining optical fiber containing plate |
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| CN109698460A (en) * | 2019-02-28 | 2019-04-30 | 南京邮电大学 | A kind of multi-wavelength Brillouin-Er-doped fiber accidental laser of partly beginning to speak |
| CN109698460B (en) * | 2019-02-28 | 2020-12-04 | 南京邮电大学 | Semi-open cavity multi-wavelength Brillouin-erbium-doped optical fiber random laser |
| CN111969406A (en) * | 2020-07-08 | 2020-11-20 | 南京邮电大学 | Brillouin optical frequency comb generation device and method based on Raman effect |
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Effective date of registration: 20210113 Address after: No.1588 Ya'an Road, Beihu science and Technology Development Zone, Changchun City, Jilin Province Patentee after: JILIN YONGLI LASER TECHNOLOGY Co.,Ltd. Address before: 130022 No. 7186 Satellite Road, Changchun, Jilin, Chaoyang District Patentee before: CHANGCHUN University OF SCIENCE AND TECHNOLOGY |
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