CN105742948A - Tunable fiber laser based on fiber Bragg grating - Google Patents
Tunable fiber laser based on fiber Bragg grating Download PDFInfo
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- CN105742948A CN105742948A CN201610288779.0A CN201610288779A CN105742948A CN 105742948 A CN105742948 A CN 105742948A CN 201610288779 A CN201610288779 A CN 201610288779A CN 105742948 A CN105742948 A CN 105742948A
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- optical fiber
- grating
- fiber
- tunable
- overlap grating
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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
- H01S3/0675—Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
-
- 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
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/1067—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using pressure or deformation
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The invention provides a tunable fiber laser based on a fiber Brag grating and a method thereof. The tunable fiber laser comprises a pump light source, a fiber wavelength division multiplexing device, a first fiber overlapping grating, a photosensitive erbium-doped fiber, a second fiber overlapping grating, piezoelectric ceramic and a piezoelectric ceramic driving source, wherein the first fiber overlapping grating and the second fiber overlapping grating are manufactured at two ends of the photosensitive erbium-doped fiber. The second fiber overlapping grating packages the piezoelectric ceramic. The photosensitive erbium-doped fiber, the first fiber overlapping grating and the second fiber overlapping grating which packages the piezoelectric ceramic form a laser tunable resonant cavity. The pump light source is injected into the laser resonant cavity through the fiber wavelength division multiplexing device by the first fiber overlapping grating. A driving power is connected with the piezoelectric ceramic through a power line. The tunable fiber laser has advantages of simple structure, flexible tuning range, high convenience in tuning control, low manufacture cost, etc.
Description
Technical field
The present invention relates to a kind of laser instrument, particularly a kind of optical fiber laser.
Background technology
Active Optical Fiber laser instrument owing to having high Energy Efficiency Ratio, output beam quality is good, volume is little, lightweight, be easily maintained, life-span length, be suitable to advantages such as working under severe conditions, achieve in recent years and develop rapidly.
Simultaneously as the huge potential application in optical WDM communication system Fibre Optical Sensor and fiber plant detect, the controlled row of laser output wavelength, namely changeable, the tunable techniques of wavelength increasingly gets more and more people's extensive concerning.
Realizing the humorous mode of lasers A tunable at present mainly has two kinds: one to be add the non-optical fiber filter parts such as F-P wave filter, acousto-optic filter in laserresonator；Two is provide light feedback to form resonator cavity with tunable fiber grating.The non-optical fiber filter cost that first kind of way adopts is high, and structure is complicated, volume is big, and big with fibre system coupling loss, makes the slope efficiency step-down of laser instrument, and threshold value increases；Second way fiber grating can with other optical fibre device integral composition full-optical-fiber laser of compatibility, and volume is little, easy to manufacture, and cost is low, good stability, but is limited to fiber grating mechanical strength, and tuning range is very limited.Therefore, develop that a kind of processing technology is simple, cost is low, tuning range tunable optical fiber laser flexibly has important using value.
Summary of the invention
It is an object of the invention to for existing technical deficiency, it is provided that a kind of tunable optical fiber laser based on optical fiber overlap grating.
Technical scheme is as follows:
The present invention includes 980nm pump light source, optical fibre wavelength division multiplexer, first optical fiber overlap grating, photosensitive Er-doped fiber, second optical fiber overlap grating, piezoelectric ceramics, Piezoelectric Ceramic source, the first optical fiber overlap grating and the second optical fiber overlap grating that wherein wavelength interval is different write system respectively at photosensitive Er-doped fiber two ends, second optical fiber overlap grating is encapsulated on piezoelectric ceramics, photosensitive Er-doped fiber, first optical fiber overlap grating and the second optical fiber overlap grating being encapsulated on piezoelectric ceramics constitute the humorous resonator cavity of lasers A tunable, pump light source passes through optical fibre wavelength division multiplexer by the first optical fiber overlap grating injection laser resonator cavity, power supply is driven to be connected with piezoelectric ceramics by power line.
Described photosensitive Er-doped fiber fibre core has been co-doped with germanium erbium ion, and optical fiber is wavelength place single mode transport near 1550nm, and optical fiber can also be able to be microstructured optical fibers for ordinary optic fibre.
The first described optical fiber overlap grating and the second optical fiber overlap grating directly write system on photosensitive Er-doped fiber, and grating length 5-30mm, optical grating reflection rate 60%-100%, different wave length reflectance is kept in balance.
The first described optical fiber overlap grating and the second optical fiber overlap grating wavelength interval are different, and wavelength number 2-16, the second optical fiber overlap grating wavelength number is less than or equal to the first optical fiber overlap grating wavelength.
The step realizing laser tuning output of the present invention and principle are as follows:
Keep the first optical fiber overlap grating motionless, the flexible of piezoelectric ceramics is controlled by the power supply that drives of piezoelectric ceramics, change the wavelength of the second optical fiber overlap grating, the specified wavelength making its corresponding wavelength and the first optical fiber overlap grating overlaps, owing to two overlapping grating wavelength intervals are different, thus only the laser at specified wavelength place realizes lasing.
The present invention compared with prior art has the advantage that
1, use the fiber bragg grating device compatible with fibre system as wave filter, and directly write on gain fibre and make chamber, greatly reduction resonator cavity internal loss, improving laser device efficiency；
2, the operation wavelength of optical fiber laser is determined by overlap weight grating wavelength, can be set in, according to use occasion, any wave band that gain fibre gain is interval, and tuning range is flexible；
3, each wavelength reflection of wave filter based on optical fiber overlap grating is customizable, and the laser of different operating wavelength can realize good power equalization；
4, modulation control convenience, good stability, simple in construction, batch production preparation cost are low.
Accompanying drawing explanation
The master that Fig. 1 is the present invention looks simplified schematic diagram；
Fig. 2 is the present invention the first optical fiber overlap grating spectrum figure；
Fig. 3 is the present invention the second optical fiber overlap grating spectrum figure；
Fig. 4 is the laser light spectrogram that the present invention obtains different wave length place under piezoelectric ceramics tunes；
In figure: 1-980nm pump light source, 2-optical fibre wavelength division multiplexer, 3-the first optical fiber overlap grating, the photosensitive Er-doped fiber of 4-, 5-the second optical fiber overlap grating, 6-piezoelectric ceramics, 7-Piezoelectric Ceramic source.
Detailed description of the invention
nullIn the tunable optical fiber laser schematic diagram based on optical fiber overlap grating shown in accompanying drawing 1，The first optical fiber overlap grating 3 and the second optical fiber overlap grating 5 that wavelength interval is different write system respectively at photosensitive Er-doped fiber 4 two ends，Second optical fiber overlap grating is encapsulated on piezoelectric ceramics 6，Photosensitive Er-doped fiber、First optical fiber overlap grating and the second optical fiber overlap grating being encapsulated on piezoelectric ceramics constitute the humorous resonator cavity of lasers A tunable，980nm pump light source 1 passes through optical fibre wavelength division multiplexer 2 by the first optical fiber overlap tunable resonator cavity of grating injection laser，Piezoelectric Ceramic source 7 is connected with piezoelectric ceramics 6 by power line，The flexible of piezoelectric ceramics is controlled by the power supply that drives of piezoelectric ceramics，Change the wavelength of the second optical fiber overlap grating，So as to overlap with the specified wavelength of the first overlapping grating of optical fiber，Owing to two overlapping grating wavelength intervals are different，Thus realizing the laser lasing at specified wavelength place.
As shown in Figure 2, the first optical fiber overlap grating resonance peak number is 8, and minimum resonance wavelength 1554.55nm, each resonance peak wavelength interval 0.8nm, average reflectance is 85%；Second optical fiber overlap grating resonance peak number is 5 as shown in Figure 3, and minimum resonance wavelength 1554.53nm, wavelength interval 1.3nm, average reflectance is 95%；Between two overlapping gratings, gain fibre length is 1m.
As shown in Figure 3, second optical fiber overlap grating is encapsulated on piezoelectric ceramics, appropriate voltage is loaded by the driving power supply of piezoelectric ceramics, the specified wavelength making the second optical fiber corresponding wavelength of overlap grating and the first optical fiber overlap grating overlaps, it is achieved wavelength interval is 0.8nm, tuning range is the 8 wavelength laser lasing of 5.6nm.
Claims (4)
1. the tunable optical fiber laser based on optical fiber overlap grating, it is characterized in that: it includes pump light source, optical fibre wavelength division multiplexer, first optical fiber overlap grating, photosensitive Er-doped fiber, second optical fiber overlap grating, piezoelectric ceramics, Piezoelectric Ceramic source, the first optical fiber overlap grating and the second optical fiber overlap grating that wherein wavelength interval is different write system respectively at photosensitive Er-doped fiber two ends, second optical fiber overlap grating is encapsulated on piezoelectric ceramics, photosensitive Er-doped fiber, first optical fiber overlap grating and the second optical fiber overlap grating being encapsulated on piezoelectric ceramics constitute the humorous resonator cavity of lasers A tunable, pump light source passes through optical fibre wavelength division multiplexer by the first optical fiber overlap grating injection laser resonator cavity, power supply is driven to be connected with piezoelectric ceramics by power line.
2. a kind of tunable optical fiber laser based on optical fiber overlap grating according to claim 1, it is characterized in that, described photosensitive Er-doped fiber fibre core has been co-doped with germanium erbium ion, and optical fiber is wavelength place single mode transport near 1550nm, and optical fiber is ordinary optic fibre or is microstructured optical fibers.
3. a kind of tunable optical fiber laser based on optical fiber overlap grating according to claim 1, it is characterized in that, the first described optical fiber overlap grating and the second optical fiber overlap grating directly write system on photosensitive Er-doped fiber, grating length 5-30mm, optical grating reflection rate 60%-100%, different wave length reflectance is kept in balance.
4. a kind of tunable optical fiber laser based on optical fiber overlap grating according to claim 1, it is characterized in that, the first described optical fiber overlap grating and the second optical fiber overlap grating wavelength interval are different, wavelength number 2-16, the second optical fiber overlap grating wavelength number is less than or equal to the first optical fiber overlap grating wavelength.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610288779.0A CN105742948A (en) | 2016-04-29 | 2016-04-29 | Tunable fiber laser based on fiber Bragg grating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610288779.0A CN105742948A (en) | 2016-04-29 | 2016-04-29 | Tunable fiber laser based on fiber Bragg grating |
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| CN105742948A true CN105742948A (en) | 2016-07-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106961066A (en) * | 2017-05-17 | 2017-07-18 | 河北大学 | A kind of multi-wavelength random fiber laser of partly beginning to speak based on overlapping fiber grating |
| CN106998030A (en) * | 2017-05-17 | 2017-08-01 | 河北大学 | A kind of half-open cavate linear polarization and super-narrow line width multi-wavelength random fiber laser |
Citations (7)
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|---|---|---|---|---|
| CN1189709A (en) * | 1997-01-30 | 1998-08-05 | 中国科学院上海光学精密机械研究所 | Semiconductor laser and fibre-optical raster mixed and integrated wavelength commutator |
| US6334013B1 (en) * | 1997-10-24 | 2001-12-25 | Pirelli Cavi E Sistemi S.P.A. | Optical fibre gratings |
| CN1329722A (en) * | 1998-12-04 | 2002-01-02 | 塞德拉公司 | Compression-tuned bragg grating and laser |
| JP2002156542A (en) * | 2000-11-20 | 2002-05-31 | Sumitomo Electric Ind Ltd | Optical waveguide type diffraction grating element manufacturing hologram, optical waveguide type diffraction grating element manufacturing method, optical waveguide type diffraction grating element, multiplexing/demultiplexing module and optical transmission system |
| CN202260115U (en) * | 2011-10-28 | 2012-05-30 | 李国玉 | Linearly-tunable short straight cavity optical fiber laser |
| CN104852270A (en) * | 2015-05-07 | 2015-08-19 | 燕山大学 | Overlapped grating and chirped grating-based dual-wavelength narrow-linewidth fiber laser |
| CN205646425U (en) * | 2016-04-29 | 2016-10-12 | 燕山大学 | Tunable fiber laser based on optic fibre overlaps grating |
-
2016
- 2016-04-29 CN CN201610288779.0A patent/CN105742948A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1189709A (en) * | 1997-01-30 | 1998-08-05 | 中国科学院上海光学精密机械研究所 | Semiconductor laser and fibre-optical raster mixed and integrated wavelength commutator |
| US6334013B1 (en) * | 1997-10-24 | 2001-12-25 | Pirelli Cavi E Sistemi S.P.A. | Optical fibre gratings |
| CN1329722A (en) * | 1998-12-04 | 2002-01-02 | 塞德拉公司 | Compression-tuned bragg grating and laser |
| JP2002156542A (en) * | 2000-11-20 | 2002-05-31 | Sumitomo Electric Ind Ltd | Optical waveguide type diffraction grating element manufacturing hologram, optical waveguide type diffraction grating element manufacturing method, optical waveguide type diffraction grating element, multiplexing/demultiplexing module and optical transmission system |
| CN202260115U (en) * | 2011-10-28 | 2012-05-30 | 李国玉 | Linearly-tunable short straight cavity optical fiber laser |
| CN104852270A (en) * | 2015-05-07 | 2015-08-19 | 燕山大学 | Overlapped grating and chirped grating-based dual-wavelength narrow-linewidth fiber laser |
| CN205646425U (en) * | 2016-04-29 | 2016-10-12 | 燕山大学 | Tunable fiber laser based on optic fibre overlaps grating |
Non-Patent Citations (1)
| Title |
|---|
| R. A. PÉREZ-HERRERA 等: "Single-Longitudinal-Mode Dual Wavelength-Switchable Fiber Laser Based on Superposed Fiber Bragg Gratings", 《IEEE PHOTONICS JOURNAL》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106961066A (en) * | 2017-05-17 | 2017-07-18 | 河北大学 | A kind of multi-wavelength random fiber laser of partly beginning to speak based on overlapping fiber grating |
| CN106998030A (en) * | 2017-05-17 | 2017-08-01 | 河北大学 | A kind of half-open cavate linear polarization and super-narrow line width multi-wavelength random fiber laser |
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Application publication date: 20160706 |