CN108183385A - One kind is based on π phase-shifted fiber grating tunable narrow-linewidth lasers - Google Patents
One kind is based on π phase-shifted fiber grating tunable narrow-linewidth lasers Download PDFInfo
- Publication number
- CN108183385A CN108183385A CN201711302875.7A CN201711302875A CN108183385A CN 108183385 A CN108183385 A CN 108183385A CN 201711302875 A CN201711302875 A CN 201711302875A CN 108183385 A CN108183385 A CN 108183385A
- Authority
- CN
- China
- Prior art keywords
- phase
- enters
- shifted fiber
- grating
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 59
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 239000000919 ceramic Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000010363 phase shift Effects 0.000 claims description 9
- 238000001228 spectrum Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- 230000006355 external stress Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000000411 transmission spectrum Methods 0.000 description 1
Classifications
-
- 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
- H01S3/10053—Phase control
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
Description
技术领域technical field
本发明涉及一种可调谐窄线宽激光器，具体为一种基于π相移光纤光栅可调谐窄线宽激光器。The invention relates to a tunable narrow-linewidth laser, in particular to a tunable narrow-linewidth laser based on a π-phase-shifted fiber grating.
背景技术Background technique
窄线宽的单纵模激光束是一种具有极低相位噪声和超长相干长度的优质激光，在光纤传感、光纤通信、激光雷达、分布式石油管道检测等领域中具有广阔的应用前景。π相移光纤光栅是指纤芯的折射率变化在某些位置存在大小为π的相位突变，从而改变光谱的分布，形成极窄的透射窗口，且相移光栅的透射窗口会随外界应力的改变而发生移动。基于此，本发明提出了采用高反射FBG和π相移光纤光栅实现可调谐窄线宽激光器。The single longitudinal mode laser beam with narrow linewidth is a high-quality laser with extremely low phase noise and ultra-long coherence length, and has broad application prospects in the fields of optical fiber sensing, optical fiber communication, lidar, and distributed oil pipeline detection. . π-phase-shifted fiber grating means that the refractive index of the fiber core changes at some positions with a phase mutation of π, thereby changing the distribution of the spectrum and forming a very narrow transmission window, and the transmission window of the phase-shifting grating will change with the external stress. Change to move. Based on this, the present invention proposes to implement a tunable narrow-linewidth laser by using a high-reflection FBG and a π-phase-shifted fiber grating.
发明内容Contents of the invention
本发明涉及一种可调谐窄线宽激光器，利用π相移光纤光栅和高反射FBG的光谱受外界应力的影响向长波方向移动及π相移光纤光栅透射窗口作为窄带滤波器特点，实现可调谐窄线宽激光的输出。The invention relates to a tunable narrow-linewidth laser, which utilizes the characteristics of the π-phase-shift fiber grating and high-reflection FBG to move to the long-wave direction under the influence of external stress and the transmission window of the π-phase-shift fiber grating as a narrow-band filter to realize tunability The output of a narrow linewidth laser.
本发明采用的技术方案如下：一种可调谐窄线宽激光器，其特征在于具体过程是:The technical scheme that the present invention adopts is as follows: a kind of tunable narrow-linewidth laser, is characterized in that concrete process is:
(1)泵浦激光器输出的光进入波分复用器，然后进入掺饵光纤，从掺饵光纤出来的光进入隔离器，然后进入环形器1端口，然后由高反射FBG反射回来的光进入环形器3端口，从环形器3端口出来的光进入π相移光纤光栅；(1) The light output from the pump laser enters the wavelength division multiplexer, then enters the erbium-doped fiber, the light from the erbium-doped fiber enters the isolator, and then enters the circulator 1 port, and then the light reflected by the high-reflection FBG enters The circulator 3 port, the light coming out of the circulator 3 port enters the π phase shift fiber grating;
(2)利用π相移光纤光栅的透射窗口作为窄带滤波器，当高反射的FBG反射带宽小于π相移光纤光栅的透射带宽且覆盖π相移光纤光栅的透射窗口时(详见附图2和附图3)，输出激光的中心波长就为π相移光纤光栅透射窗口的中心波长；(2) Utilize the transmission window of the π phase-shifting fiber Bragg grating as a narrow-band filter, when the reflection bandwidth of the highly reflective FBG is smaller than the transmission bandwidth of the π phase-shifting fiber Bragg grating and covers the transmission window of the π phase-shifting fiber Bragg grating (see accompanying drawing 2 for details And accompanying drawing 3), the center wavelength of output laser is just the center wavelength of π phase-shift fiber grating transmission window;
(3)同时调节压电陶瓷1和压电陶瓷2，对π相移光纤光栅和高反射FBG产生相同微应变，使π相移光纤光栅和高反射FBG透射窗口发生相对应的移动；假设π相移光纤光栅应变系数为a1,高反射FBG应变系数为a2，则要保证a1p1＝a2p2时刻相等，其中p1为加在π相移光纤光栅上对应压电陶瓷的电压，p2为加在高反射FBG上对应压电陶瓷的电压，就可以输出不同波长的光；(3) Simultaneously adjust piezoelectric ceramic 1 and piezoelectric ceramic 2 to produce the same micro-strain on π-phase-shifted fiber Bragg grating and high-reflection FBG, so that the transmission windows of π-phase-shifted fiber-optic grating and high-reflection FBG move correspondingly; assuming π The gauge factor of the phase-shifting fiber Bragg grating is a 1 , and the gauge factor of the high-reflection FBG is a 2 , then it is necessary to ensure that a 1 p 1 = a 2 p 2 is equal at all times, where p 1 is the corresponding piezoelectric ceramic added to the π phase-shifting fiber Bragg grating The voltage, p 2 is the voltage corresponding to the piezoelectric ceramics added to the high reflection FBG, it can output light of different wavelengths;
(4)从π相移光纤光栅透射出来的光进入耦合器，从耦合器一端口输出的光，再次进入波分复用器，完成一个循环；(4) The light transmitted from the π-phase-shifted fiber grating enters the coupler, and the light output from one port of the coupler enters the wavelength division multiplexer again to complete a cycle;
(5)重复上述过程，当增益大于损耗的时候，获得的激光从耦合器另一个口输出激光，从而实现可调谐窄线宽激光的输出。(5) Repeat the above process, when the gain is greater than the loss, the obtained laser is output from the other port of the coupler, so as to realize the output of tunable narrow linewidth laser.
一种基于π相移光纤光栅可调谐窄线宽激光器，包括泵浦激光器、波分复用器、掺饵光纤、隔离器、环形器、π相移光纤光栅、高反射FBG、压电陶瓷1、压电陶瓷2、耦合器；高反射FBG的反射谱要和π相移光纤光栅的相移峰相对应，且高反射的FBG反射带宽小于π相移光纤光栅的透射带宽且覆盖π相移光纤光栅的透射窗口(详见附图2和附图3)；要保证π相移光纤光栅和高反射FBG谱线随着外界微应变移动速度相等。要设计π相移光纤光栅和高反射FBG的应变系数，当分别调节加在π相移光纤光栅和高反射FBG上压电陶瓷上的电压，保证其向长波方向移动速度相等。A tunable narrow-linewidth laser based on π-phase-shifted fiber Bragg gratings, including pump lasers, wavelength division multiplexers, erbium-doped fibers, isolators, circulators, π-phase-shifted fiber Bragg gratings, high-reflection FBGs, and piezoelectric ceramics1 , piezoelectric ceramics 2, coupler; the reflection spectrum of the high reflection FBG should correspond to the phase shift peak of the π phase shift fiber grating, and the reflection bandwidth of the high reflection FBG is smaller than the transmission bandwidth of the π phase shift fiber Bragg grating and covers the π phase shift The transmission window of the fiber grating (see accompanying drawings 2 and 3 for details); it is necessary to ensure that the π phase-shifting fiber grating and the high-reflection FBG spectral lines move at the same speed with the external micro-strain. To design the gauge factor of π-phase-shifting fiber Bragg grating and high-reflection FBG, the voltage applied to the piezoelectric ceramics on π-phase-shifting fiber-optic grating and high-reflection FBG should be adjusted respectively to ensure that they move at the same speed in the long-wave direction.
本发明的优点是：实现了可调谐窄线宽激光的输出，且方法简单可行、易操作等特点。The invention has the advantages of realizing the output of tunable narrow line width laser, and the method is simple, feasible, easy to operate and the like.
附图说明Description of drawings
图1是本发明系统装置结构图。Fig. 1 is a structural diagram of the system device of the present invention.
图2是本发明π相移光纤光栅的透射谱图。Fig. 2 is a transmission spectrum diagram of the π phase shift fiber grating of the present invention.
图3是本发明高反射FBG的反射谱图。Fig. 3 is a reflection spectrum diagram of the high reflection FBG of the present invention.
图1所示：1泵浦激光器，2波分复用器，3掺铒光纤,4隔离器，5环形器，6高反射FBG，7压电陶瓷1，8π相移光纤光栅，9压电陶瓷2，10耦合器。As shown in Figure 1: 1 pump laser, 2 wavelength division multiplexer, 3 erbium-doped fiber, 4 isolator, 5 circulator, 6 high reflection FBG, 7 piezoelectric ceramic 1, 8π phase-shifting fiber grating, 9 piezoelectric Ceramic 2, 10 coupler.
具体实施方式Detailed ways
本发明是这样来工作和实施的，实施方案如图1所示:上述方法的具体过程是:泵浦激光器(1)输出的光进入波分复用器(2)，然后进入掺饵光纤(3)，从掺饵光纤(3)出来的光进入隔离器(4)，然后进入环形器(5)1端口，由高反射FBG反射(6)回来的光进入环形器(5)3端口，从环形器(5)3端口出来的光进入π相移光纤光栅(8)。利用π相移光纤光栅(8)的透射窗口作为窄带滤波器。当高反射的FBG(6)反射带宽小于π相移光纤光栅(8)的透射带宽且覆盖π相移光纤光栅(8)的透射窗口时，输出激光的中心波长就为π相移光纤光栅(8)透射窗口的中心波长，同时调节压电陶瓷1(7)和压电陶瓷2(9)，对π相移光纤光栅(8)和高反射FBG(6)产生相同微应变，使π相移光纤光栅(8)和高反射FBG(6)透射窗口发生相对应的移动，假设π相移光纤光栅(8)应变系数为a1,高反射FBG(6)应变系数为a2，则要保证a1p1＝a2p2时刻相等，其中p1为加在π相移光纤光栅(8)上对应压电陶瓷2(9)的电压，p2为加在高反射FBG(6)上对应压电陶瓷1(7)的电压就可以输出不同波长的光，从π相移光纤光栅(8)透射出来的光进入耦合器(10)，从耦合器(10)一端口输出的光，然后再次进入波分复用器(2)，完成一个循环，重复上述过程，当增益大于损耗的时候，获得的激光从耦合器(10)另一个口输出激光，从而实现可调谐窄线宽激光的输出。The present invention works and implements like this, embodiment as shown in Figure 1: the concrete process of above-mentioned method is: the light of pump laser (1) output enters wavelength division multiplexer (2), then enters erbium-doped optical fiber ( 3), the light from the erbium-doped fiber (3) enters the isolator (4), and then enters the 1 port of the circulator (5), and the light reflected by the high-reflection FBG (6) enters the 3 port of the circulator (5), The light coming out from port 3 of the circulator (5) enters the π phase-shifting fiber grating (8). The transmission window of the π-phase-shifted fiber grating (8) is used as a narrow-band filter. When the reflection bandwidth of the highly reflective FBG (6) is less than the transmission bandwidth of the π-phase-shift fiber grating (8) and covers the transmission window of the π-phase-shift fiber Bragg grating (8), the central wavelength of the output laser is just the π-phase-shift fiber grating ( 8) The central wavelength of the transmission window, adjust the piezoelectric ceramic 1 (7) and piezoelectric ceramic 2 (9) at the same time, produce the same micro-strain on the π-phase-shifted fiber Bragg grating (8) and the high-reflection FBG (6), so that the π-phase The transmission window of the shifting fiber Bragg grating (8) and the high-reflection FBG (6) moves correspondingly, assuming that the gauge factor of the π phase-shifting fiber Bragg grating (8) is a 1 , and the gauge factor of the high-reflection FBG (6) is a 2 , then Ensure that a 1 p 1 = a 2 p 2 are equal at all times, where p 1 is the voltage applied to the π phase-shifted fiber bragg grating (8) corresponding to the piezoelectric ceramic 2 (9), and p 2 is the voltage applied to the high reflection FBG (6) The voltage corresponding to the piezoelectric ceramic 1 (7) can output light of different wavelengths, the light transmitted from the π-phase shift fiber grating (8) enters the coupler (10), and the light output from one port of the coupler (10) , and then enter the wavelength division multiplexer (2) again to complete a cycle and repeat the above process. When the gain is greater than the loss, the obtained laser is output from the other port of the coupler (10), thereby realizing tunable narrow linewidth output of the laser.
一种基于π相移光纤光栅可调谐窄线宽激光器。包括泵浦激光器、波分复用器、掺饵光纤、隔离器、环形器、π相移光纤光栅、高反射FBG、压电陶瓷1、压电陶瓷2、耦合器。A tunable narrow-linewidth laser based on a π-phase-shifted fiber grating. Including pump laser, wavelength division multiplexer, erbium-doped fiber, isolator, circulator, π phase shift fiber grating, high reflection FBG, piezoelectric ceramic 1, piezoelectric ceramic 2, coupler.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711302875.7A CN108183385A (en) | 2017-12-08 | 2017-12-08 | One kind is based on π phase-shifted fiber grating tunable narrow-linewidth lasers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711302875.7A CN108183385A (en) | 2017-12-08 | 2017-12-08 | One kind is based on π phase-shifted fiber grating tunable narrow-linewidth lasers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108183385A true CN108183385A (en) | 2018-06-19 |
Family
ID=62545814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711302875.7A Pending CN108183385A (en) | 2017-12-08 | 2017-12-08 | One kind is based on π phase-shifted fiber grating tunable narrow-linewidth lasers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108183385A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110838671A (en) * | 2019-12-12 | 2020-02-25 | 上海瀚宇光纤通信技术有限公司 | Single-frequency optical fiber laser |
| CN111129923A (en) * | 2019-12-20 | 2020-05-08 | 江苏师范大学 | Single-frequency and single-polarization optical fiber distributed feedback laser |
| CN111342329A (en) * | 2020-03-04 | 2020-06-26 | 厦门大学 | Continuous millimeter wave signal generating device and method |
| CN113097849A (en) * | 2021-04-30 | 2021-07-09 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Narrow linewidth fiber laser generation device and method based on distributed feedback |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212115A (en) * | 2006-12-28 | 2008-07-02 | 中国科学院半导体研究所 | Tunable Erbium-doped Fiber Ring Cavity Laser |
| CN101728752A (en) * | 2008-10-22 | 2010-06-09 | 中国科学院半导体研究所 | Wavelength tunable fiber laser |
| CN104733987A (en) * | 2013-12-19 | 2015-06-24 | 李国玉 | Linear automatic tunable annular cavity fiber laser |
-
2017
- 2017-12-08 CN CN201711302875.7A patent/CN108183385A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212115A (en) * | 2006-12-28 | 2008-07-02 | 中国科学院半导体研究所 | Tunable Erbium-doped Fiber Ring Cavity Laser |
| CN101728752A (en) * | 2008-10-22 | 2010-06-09 | 中国科学院半导体研究所 | Wavelength tunable fiber laser |
| CN104733987A (en) * | 2013-12-19 | 2015-06-24 | 李国玉 | Linear automatic tunable annular cavity fiber laser |
Non-Patent Citations (2)
| Title |
|---|
| 孙俊杰 等: ""基于π相移光纤布拉格光栅的窄线宽掺铒光纤激光器"", 《激光与光电子学进展》 * |
| 李国玉 等: ""基于压电陶瓷闭环控制的线性可调谐环形腔光纤激光器"", 《光学学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110838671A (en) * | 2019-12-12 | 2020-02-25 | 上海瀚宇光纤通信技术有限公司 | Single-frequency optical fiber laser |
| CN111129923A (en) * | 2019-12-20 | 2020-05-08 | 江苏师范大学 | Single-frequency and single-polarization optical fiber distributed feedback laser |
| CN111129923B (en) * | 2019-12-20 | 2022-02-25 | 江苏师范大学 | Single-frequency and single-polarization optical fiber distributed feedback laser |
| CN111342329A (en) * | 2020-03-04 | 2020-06-26 | 厦门大学 | Continuous millimeter wave signal generating device and method |
| CN113097849A (en) * | 2021-04-30 | 2021-07-09 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Narrow linewidth fiber laser generation device and method based on distributed feedback |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| McCall | On the application of coupled mode theory for modeling fiber Bragg gratings | |
| CN108183385A (en) | One kind is based on π phase-shifted fiber grating tunable narrow-linewidth lasers | |
| CN101320884B (en) | Double wavelength single longitudinal mode optical fiber laser | |
| CN106556574B (en) | Online two-beam interference type optic fibre refractive index sensor and refractivity tester | |
| CN102842845A (en) | Chaotic laser controller | |
| CN104617473B (en) | Filter with low insertion loss Three links theory narrow linewidth Brillouin optical fiber laser | |
| Singh | Long period fiber grating based refractive index sensor with enhanced sensitivity using Michelson interferometric arrangement | |
| CN101777722A (en) | Double-wavelength single-longitudinal-mode fiber laser and operating method thereof | |
| Cuadrado-Laborde et al. | Design of an ultra-broadband all-optical fractional differentiator with a long-period fiber grating | |
| Hessainia et al. | Analysis of fiber Bragg grating with exponential–linear and parabolic taper profiles for dispersion slope compensation in optical fiber links | |
| CN103368045A (en) | Narrow-linewidth single-frequency fiber laser based on all-fiber slow-light element | |
| CN103795462B (en) | Method for measuring dispersion of semiconductor optical amplifier | |
| CN106352807A (en) | Method for measuring strain of material on basis of thin-core fiber Mach-Zehnder interferometer | |
| CN104019760A (en) | Sensitivity enhancement demodulation method and device of fiber optical Bragg grating strain sensor | |
| Fan et al. | Novel structure of an ultra-narrow-bandwidth fibre laser based on cascade filters: PGFBG and SA | |
| Kulishov et al. | Tunable waveguide transmission gratings based on active gain control | |
| CN205861002U (en) | A kind of based on spherical structure with the fibre optic strain sensor of photonic crystal fiber | |
| Yin et al. | Tunable fiber laser by cascading twin core fiber-based directional couplers | |
| CN201639143U (en) | Dual-Wavelength Single Longitudinal Mode Fiber Laser Based on Sampling Grating Pair | |
| Yang et al. | Gap FBG and its application in tunable narrow linewidth fibre laser | |
| Hernandez-Luna et al. | Fabrication of Mach-Zehnder interferometers with conventional fiber optics in detection applications of micro-displacement and liquids | |
| Yu-yu et al. | The fabrication mechanism and spectral characteristics of Fiber Gratings fabricated by point-by-point direct-writing based on femtosecond laser pulses | |
| CN204064257U (en) | The sensitivity of bragg grating strain transducer strengthens demodulating equipment | |
| Yuan | In-fiber integrated optic devices for sensing applications | |
| Mohammed et al. | Simulation and Evaluation of (OADM) based on Bragg Grating and 3 db MMI Couplers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180619 |
|
| RJ01 | Rejection of invention patent application after publication |