CN107181161A - A kind of multi-wavelength narrow linewidth ring cavity optical laser system based on phase-shifted fiber grating - Google Patents
A kind of multi-wavelength narrow linewidth ring cavity optical laser system based on phase-shifted fiber grating Download PDFInfo
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- CN107181161A CN107181161A CN201710595431.0A CN201710595431A CN107181161A CN 107181161 A CN107181161 A CN 107181161A CN 201710595431 A CN201710595431 A CN 201710595431A CN 107181161 A CN107181161 A CN 107181161A
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- fiber grating
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- shifted fiber
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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
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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
- H01S3/06791—Fibre ring lasers
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- Optics & Photonics (AREA)
- Lasers (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a kind of multi-wavelength narrow linewidth ring cavity optical laser system based on phase-shifted fiber grating, step is as follows：Pump light enters annular chamber by wavelength division multiplexer, subsequently into Er-doped fiber；The light come out from Er-doped fiber is entered the fiber grating of multiple series connection by optical circulator, and the light reflected by fiber grating enters phase-shifted fiber grating by circulator again.Wherein the reflection peak of fiber grating is corresponding with the phase shift peak of correspondence phase-shifted fiber grating, and wants the bandwidth of reasonable selection fiber grating；Upper port output of the light that phase-shifted fiber grating is transmitted through coupler, subsequently into optoisolator, enters back into wavelength division multiplexer, so as to complete a circulation；Above step is repeated afterwards；When gain is more than loss, the laser of acquisition is exported from the lower port of coupler.It is an advantage of the invention that：Using multiple phase-shift fiber grating and corresponding multi fiber grating, it is achieved thereby that being exported while multi-wavelength narrow-linewidth laser.
Description
Technical field
The present invention relates to a kind of multi-wavelength narrow linewidth laser, and in particular to be a kind of based on many of phase-shifted fiber grating
Wavelength narrow linewidth ring cavity optical laser system.
Background technology
The multi-wavelength narrow linewidth laser designed the present invention be directed to the multiplying question in phase-shifted fiber grating sensing.
In many application fields, it is necessary to multi-wavelength narrow linewidth laser.And it is currently based on the narrow linewidth of phase-shifted fiber grating
Laser is all Single wavelength scheme, limits its application in some fields.
Based on this, the present invention proposes the multi-wavelength narrow linewidth annular cavity optical using multi fiber grating and phase-shifted fiber grating
Fibre laser system.It is narrow that multi-wavelength narrow linewidth ring cavity optical laser system proposed by the invention can export multi-wavelength simultaneously
Line width laser.
The content of the invention
The present invention is by using multiple phase-shift fiber grating and corresponding multi fiber grating, it is achieved thereby that multi-wavelength is narrow
Exported while line width laser.
To achieve the above object, the present invention builds circular cavity optic fibre laser using following step, and one kind is based on phase shift
The multi-wavelength narrow linewidth ring cavity optical laser system of fiber grating, it is characterised in that method and step is as follows：
（1）Pump light enters annular chamber by wavelength division multiplexer, subsequently into Er-doped fiber；
（2）The light come out from Er-doped fiber is entered the fiber grating of multiple series connection by optical circulator, is reflected by fiber grating
Light phase-shifted fiber grating is entered by circulator again.The wherein phase shift peak of the reflection peak of fiber grating and corresponding phase-shifted fiber grating
It is corresponding, and the bandwidth of reasonable selection fiber grating is wanted, accompanying drawing 2 is seen in detail；
（3）Upper port output of the light that phase-shifted fiber grating is transmitted through coupler, subsequently into optoisolator, enters back into ripple
Division multiplexer, so as to complete a circulation；
（4）Above step is repeated afterwards；
（5）When gain is more than loss, the laser of acquisition is exported from the lower port of coupler.
It is an advantage of the invention that：Using multiple phase-shift fiber grating and corresponding multi fiber grating, it is achieved thereby that many
Exported while wavelength narrow-linewidth laser.
Brief description of the drawings
Fig. 1 is the multi-wavelength narrow linewidth circular cavity optic fibre laser system construction drawing based on phase-shifted fiber grating.
In Fig. 1,1 is pump laser, and 2 be wavelength division multiplexer, and 3 be Er-doped fiber, and 4 be optical circulator, and 5 be the 1st light
Fine grating, 6 be the 2nd fiber grating, and 7 be n-th fiber grating, and 8 be the 1st phase-shifted fiber grating, and 9 be the 2nd phase shift light
Fine grating, 10 be n-th phase-shifted fiber grating, and 11 be photo-coupler, and 12 be optoisolator, and 13 be laser output mouthful.
Fig. 2 is the reflectance spectrum of one of fiber grating and the transmission spectrum of phase-shifted fiber grating corresponding thereto.
Embodiment
Embodiment is as shown in Figure 1.Pump laser（1）The light of output is via wavelength division multiplexer（2）Into Er-doped fiber
（3）, produce population inversion.Excited radiation light is through optical circulator（4）Enter fiber grating afterwards（5）, fiber grating（6）And light
Fine grating（7）, the signal returned by these optical grating reflections is again by phase-shifted fiber grating（8）, phase-shifted fiber grating（9）And phase
Shifting fiber grating（10）, it is then most of through photo-coupler（11）Into annular chamber, then to optoisolator（12）, enter back into wavelength-division
Multiplexer（2）.When gain is more than loss, laser can be from laser output mouthful（13）Output.The reflectance spectrum of each fiber grating
The phase shift peak of phase-shifted fiber grating all corresponding with its is corresponding, i.e. the phase of the reflectance spectrum of fiber grating 1 and phase-shifted fiber grating 1
Shifting peak is corresponding, and the reflectance spectrum of fiber grating 2 is corresponding with the phase shift peak of phase-shifted fiber grating 2, and the rest may be inferred, as shown in Figure 2.
Meanwhile, the reflectance spectrum of each fiber grating is not overlapping, and the reflectance spectrum of each fiber grating is respectively positioned on except corresponding phase shift
Outside fiber grating in the transmission passband of other phase-shifted fiber gratings.Fiber grating plays a part of bandpass filtering, positioned at its reflection
Wavelength in spectrum will be reflected back, and the wavelength outside reflectance spectrum will transmit through.The light reflected by fiber grating is through the ring of light
Enter phase-shifted fiber grating after shape device.It can only be reflected simultaneously by fiber grating and the spectrum of phase-shifted fiber grating transmission can
Propagated in optic fiber ring-shaped cavity, and finally produce the output of laser.
A kind of multi-wavelength light fiber laser system based on phase-shifted fiber grating.It includes pump light source, wavelength division multiplexer, mixed
Erbium optical fiber, optical circulator, multiple fiber gratings, multiple phase-shifted fiber gratings, photo-coupler, optoisolator.
According to claim 1, it is characterized in that having multiple fiber gratings and phase-shifted fiber grating in resonator, each
The phase shift peak of the reflectance spectrum of fiber grating phase-shifted fiber grating corresponding with its is corresponding, and the bandwidth of fiber grating reflectance spectrum
Slightly larger than the bandwidth at phase-shifted fiber grating phase shift peak, and the bandwidth of fiber grating reflectance spectrum is less than phase-shifted fiber grating and transmitted again
The bandwidth of spectrum（As shown in Figure 2）.Multi-wavelength light fiber laser system according to claim 2, can be achieved multi-wavelength narrow linewidth
Exported while laser.
Claims (1)
1. a kind of multi-wavelength narrow linewidth ring cavity optical laser system based on phase-shifted fiber grating, it is characterised in that method and step
It is as follows：
（1）Pump light enters annular chamber by wavelength division multiplexer, subsequently into Er-doped fiber；
（2）The light come out from Er-doped fiber is entered the fiber grating of multiple series connection by optical circulator, is reflected by fiber grating
Light phase-shifted fiber grating is entered by circulator again；The wherein phase shift peak of the reflection peak of fiber grating and corresponding phase-shifted fiber grating
It is corresponding, and the bandwidth of reasonable selection fiber grating is wanted, accompanying drawing 2 is seen in detail；
（3）Upper port output of the light that phase-shifted fiber grating is transmitted through coupler, subsequently into optoisolator, enters back into ripple
Division multiplexer, so as to complete a circulation；
（4）Above step is repeated afterwards；
（5）When gain is more than loss, the laser of acquisition is exported from the lower port of coupler.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595431.0A CN107181161B (en) | 2017-07-20 | 2017-07-20 | A kind of multi-wavelength narrow linewidth ring cavity optical laser system based on phase-shifted fiber grating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595431.0A CN107181161B (en) | 2017-07-20 | 2017-07-20 | A kind of multi-wavelength narrow linewidth ring cavity optical laser system based on phase-shifted fiber grating |
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| Publication Number | Publication Date |
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| CN107181161A true CN107181161A (en) | 2017-09-19 |
| CN107181161B CN107181161B (en) | 2019-05-31 |
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| CN201710595431.0A Active CN107181161B (en) | 2017-07-20 | 2017-07-20 | A kind of multi-wavelength narrow linewidth ring cavity optical laser system based on phase-shifted fiber grating |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110736436A (en) * | 2019-09-01 | 2020-01-31 | 天津大学 | Phase-shift fiber grating sensing sensitivity stabilizing system and method based on wavelength following |
| CN111434058A (en) * | 2017-12-22 | 2020-07-17 | 华为技术有限公司 | Narrow linewidth multi-wavelength light source |
| CN113410736A (en) * | 2021-05-24 | 2021-09-17 | 华南理工大学 | Tunable single-frequency pulse fiber laser |
| US11233372B2 (en) * | 2019-06-25 | 2022-01-25 | Lumentum Operations Llc | Femtosecond pulse stretching fiber oscillator |
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| CN102185239A (en) * | 2011-04-07 | 2011-09-14 | 中国科学院半导体研究所 | Single-fiber MWFL (multi-wavelength fiber laser) |
| CN105703208A (en) * | 2016-04-25 | 2016-06-22 | 北京交通大学 | Multi-wavelength tunable laser based on polarization-maintaining chirped phase-shift fiber grating |
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| US6931031B2 (en) * | 2002-03-06 | 2005-08-16 | Aston University | Generating electronic carrier signals in the optical domain |
| CN102185239A (en) * | 2011-04-07 | 2011-09-14 | 中国科学院半导体研究所 | Single-fiber MWFL (multi-wavelength fiber laser) |
| CN105703208A (en) * | 2016-04-25 | 2016-06-22 | 北京交通大学 | Multi-wavelength tunable laser based on polarization-maintaining chirped phase-shift fiber grating |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111434058A (en) * | 2017-12-22 | 2020-07-17 | 华为技术有限公司 | Narrow linewidth multi-wavelength light source |
| CN111434058B (en) * | 2017-12-22 | 2021-06-04 | 华为技术有限公司 | Narrow linewidth multi-wavelength light source |
| US11233372B2 (en) * | 2019-06-25 | 2022-01-25 | Lumentum Operations Llc | Femtosecond pulse stretching fiber oscillator |
| US11817672B2 (en) * | 2019-06-25 | 2023-11-14 | Lumentum Operations Llc | Femtosecond pulse stretching fiber oscillator |
| CN110736436A (en) * | 2019-09-01 | 2020-01-31 | 天津大学 | Phase-shift fiber grating sensing sensitivity stabilizing system and method based on wavelength following |
| CN110736436B (en) * | 2019-09-01 | 2021-07-06 | 天津大学 | Phase-shift fiber grating sensing sensitivity stabilizing method based on wavelength following |
| CN113410736A (en) * | 2021-05-24 | 2021-09-17 | 华南理工大学 | Tunable single-frequency pulse fiber laser |
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