CN102104229A - Wavelength control device and method of single frequency laser - Google Patents
Wavelength control device and method of single frequency laser Download PDFInfo
- Publication number
- CN102104229A CN102104229A CN2010106191201A CN201010619120A CN102104229A CN 102104229 A CN102104229 A CN 102104229A CN 2010106191201 A CN2010106191201 A CN 2010106191201A CN 201010619120 A CN201010619120 A CN 201010619120A CN 102104229 A CN102104229 A CN 102104229A
- Authority
- CN
- China
- Prior art keywords
- single frequency
- frequency laser
- wavelength control
- laser
- control module
- 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
Images
Landscapes
- Optical Communication System (AREA)
- Semiconductor Lasers (AREA)
- Lasers (AREA)
Abstract
The invention discloses a wavelength control device and method of a single frequency laser, which are used for solving the problem that interference curves of the single frequency laser jitter due to centre wavelength frequency drift, so that the change of sensing interference is submerged, thus seriously influencing system performances. Light emitted from the single frequency laser is transmitted to a fiber Bragg grating (FBG), the principle that the FBG can be used to reflect narrow-band light emitted from the single frequency laser, and If the emitted laser has frequency drift, the intensity of the light which is reflected back to the FBG changes is adopted, a high-precision wavelength control module is used for detection to obtain light spectrum change of the centre wavelength of the single frequency laser by received signal intensity of light which is reflected by the FBG, and the high-precision wavelength control module is applied to the single frequency laser in accordance with the light spectrum change, thus the frequency drift of the single frequency laser is reduced, and the centre wavelength of the single frequency laser is recovered to an initial set numerical value.
Description
Technical field
The present invention relates to technical field of optical fiber sensing, relate in particular to a kind of wavelength regulation technical field of laser.
Background technology
Laser is the parts of most critical in optical communication and the Fibre Optical Sensor.Many Fibre Optical Sensors need extremely narrow live width and minimum frequency drift.Narrow linewidth is the key of interfere type fiber optic sensor system, be the primary condition that system can the response light phase change, and live width is narrow more, and interference effect is just obvious more, and the sensitivity of system is just high more.Minimum frequency drift is also extremely important, because frequency drift can cause interference curve to be shaken, the variation of sensing interference is submerged, and has a strong impact on the performance of system.
Though the single product laser that uses at present can be exported the laser of narrow linewidth,, the frequency drift phenomenon is more serious, and the signal curve that causes recording is shaken seriously, and the accurate performance of system is difficult to be guaranteed.
Summary of the invention
In order to solve problems of the prior art, the invention provides a kind of wavelength control device and control method thereof of single frequency laser, can solve the frequency drift problem of single frequency laser.
In order to achieve the above object, the technical solution adopted in the present invention is as follows:
A kind of wavelength control device of single frequency laser, coupler one side ports connect single frequency laser and high accuracy wavelength control module respectively, and the opposite side port connects detecting optical cable and fiber grating respectively, and high accuracy wavelength control module links to each other with single frequency laser.
Described fiber grating is positioned in the thermostat, guarantee that fiber grating is in the constant temperature operating state, fiber grating can reflect the narrow band light that single frequency laser sends, and fiber grating changes with the narrow band light wavelength frequency drift that single frequency laser sends, and obtains different reflection results
Described high accuracy wavelength control module comprises Optical Receivers, data processing module, temperature control modules; Optical Receivers receives the narrowband optical signal of reflected back in the fiber grating and is translated into the signal of telecommunication, can monitor the frequency drift situation of the narrow band light of single frequency laser emission through data handling system, regulate the refrigeration plant of single frequency laser inside by temperature control modules, thereby regulate its emission light frequency.
A kind of wavelength control method of single frequency laser comprises the following steps:
After the narrow band light that single frequency laser sends entered the coupler beam split, the one tunnel entered the subsequent probe system, and one the tunnel enters the fiber grating that is placed in the thermostat; Described fiber grating can reflect the narrow band light that single frequency laser sends, if the emitted laser frequency is drifted about, the light intensity of the narrow band light that reflects from described fiber grating will change, and the narrow band light of reflected back is returned through described coupler and entered described high accuracy wavelength control module; Described high accuracy wavelength control module detects the spectrum change that obtains single frequency laser centre wavelength by the narrowband optical signal intensity that the fiber grating that receives reflects; High accuracy wavelength control module acts on the single frequency laser according to spectrum change, and its frequency drift is reduced, and centre wavelength returns to the numerical value of initial setting.
Compared to prior art, beneficial effect of the present invention is:
The present invention utilizes the permanent power control techniques of thermostatic control technology and light to design a kind of wavelength control method and apparatus of single frequency laser, and is simple in structure, and dependable performance makes the optical wavelength and the power long-term stability of single frequency laser work.
Description of drawings
Fig. 1 is an apparatus structure schematic diagram of the present invention;
Fig. 2 is the structural representation of high accuracy wavelength control module.
Embodiment
Below in conjunction with accompanying drawing the wavelength control device and the control method of single frequency laser of the present invention are made detailed description.
1 as can be known in conjunction with the accompanying drawings, coupler 2 one side ports connect single frequency laser 1 and high accuracy wavelength control module 3, high accuracy wavelength control module 3 links to each other with single frequency laser 1, and coupler 2 opposite side ports connect detecting optical cable 6 and fiber grating 4 respectively, and fiber grating 4 is placed in the thermostat 5.
2 as can be known in conjunction with the accompanying drawings, and high accuracy wavelength control module 3 comprises Optical Receivers 9, data processing module 8, temperature control modules 7; Optical Receivers 9 receives the narrowband optical signal of reflected back in the fiber grating 4 and is translated into the signal of telecommunication, data processing module 8 can be monitored the frequency drift situation of the narrow band light of single frequency laser 1 emission, regulate the refrigeration plant of single frequency laser 1 inside by temperature control modules 7, thereby regulate its emission light frequency.
A kind of wavelength control method of single frequency laser comprises the following steps:
After the light that a, single frequency laser 1 send entered coupler 2 beam split, the one tunnel entered detecting optical cable 6, and one the tunnel enters the fiber grating 4 that is placed in the thermostat 5;
B, fiber grating 4 can reflect the narrow band light light that single frequency laser 1 sends, if the emitted laser frequency is drifted about, the light intensity that reflects will change, and emission light returns the Optical Receivers 9 that enters in the high accuracy wavelength control module 3 through coupler 2;
C, Optical Receivers 9 are converted into the signal of telecommunication with the light signal that receives, and can monitor the frequency drift situation of the narrow band light of single frequency laser 1 emission through data handling system 8;
D, high accuracy wavelength control module 3 are passed through the refrigeration plant that temperature control modules 7 is regulated single frequency lasers 1 inside, and its frequency drift is reduced, and the centre wavelength frequency retrieval is to the initial numerical value of setting.
More than show and describe basic principle of the present invention and principal character advantage of the present invention.The technical staff of the industry should understand the restriction that the present invention is not subjected to above-mentioned using method; that describes in above-mentioned using method and the specification just says principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall into the interior claimed scope of the present invention of the claimed scope of the invention and defined by appending claims and equivalent thereof.
Claims (4)
1. the wavelength control device of a single frequency laser, it is characterized in that, coupler one side ports connects single frequency laser and high accuracy wavelength control module respectively, and the opposite side port connects detecting optical cable and fiber grating respectively, and high accuracy wavelength control module links to each other with single frequency laser.
2. the wavelength control device of a kind of single frequency laser according to claim 1, it is characterized in that: described high accuracy wavelength control module comprises Optical Receivers, data processing module, temperature control modules.
3. the wavelength control device of a kind of single frequency laser according to claim 1, it is characterized in that: described fiber grating places a thermostat.
4. the wavelength control method of a single frequency laser is characterized in that comprising the following steps:
After the narrow band light that a, single frequency laser send entered the coupler beam split, the one tunnel entered detecting optical cable, and one the tunnel enters the fiber grating that is placed in the thermostat;
B, fiber grating can reflect the narrow band light that single frequency laser sends, if the emitted laser frequency is drifted about, the narrow band light light intensity that reflects will change, and emission light returns the Optical Receivers that enters in the high accuracy wavelength control module through the original optical path coupler;
C, Optical Receivers are converted into the signal of telecommunication with the light signal that receives, and can monitor the frequency drift situation of the narrow band light of single frequency laser emission through data handling system;
D, high accuracy wavelength control module regulate the refrigeration plant of single frequency laser inside by temperature control modules, and its frequency drift is reduced, and the centre wavelength frequency retrieval is to the initial numerical value of setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106191201A CN102104229A (en) | 2010-12-29 | 2010-12-29 | Wavelength control device and method of single frequency laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106191201A CN102104229A (en) | 2010-12-29 | 2010-12-29 | Wavelength control device and method of single frequency laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102104229A true CN102104229A (en) | 2011-06-22 |
Family
ID=44156833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106191201A Pending CN102104229A (en) | 2010-12-29 | 2010-12-29 | Wavelength control device and method of single frequency laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102104229A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703700A (en) * | 2013-07-15 | 2014-04-02 | 华为技术有限公司 | Method, apparatus and optical network system for wavelength aligning |
| CN106525097A (en) * | 2016-12-12 | 2017-03-22 | 大连艾科科技开发有限公司 | Tunable laser wavelength detection method and device |
| CN110174242A (en) * | 2019-05-23 | 2019-08-27 | 长飞光纤光缆股份有限公司 | The device and method of optical time domain reflectometer elimination laser wavelength drift error |
| WO2020155250A1 (en) * | 2019-01-31 | 2020-08-06 | 深圳大学 | Single-frequency laser light source |
-
2010
- 2010-12-29 CN CN2010106191201A patent/CN102104229A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703700A (en) * | 2013-07-15 | 2014-04-02 | 华为技术有限公司 | Method, apparatus and optical network system for wavelength aligning |
| CN103703700B (en) * | 2013-07-15 | 2016-09-28 | 华为技术有限公司 | Method, device and the optical network system of a kind of wavelength alignment |
| CN106525097A (en) * | 2016-12-12 | 2017-03-22 | 大连艾科科技开发有限公司 | Tunable laser wavelength detection method and device |
| CN106525097B (en) * | 2016-12-12 | 2019-08-13 | 大连艾科科技开发有限公司 | A kind of tunable laser wavelength detecting method and device |
| WO2020155250A1 (en) * | 2019-01-31 | 2020-08-06 | 深圳大学 | Single-frequency laser light source |
| CN110174242A (en) * | 2019-05-23 | 2019-08-27 | 长飞光纤光缆股份有限公司 | The device and method of optical time domain reflectometer elimination laser wavelength drift error |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8964185B1 (en) | Gas detection system using a fiber laser with double-wavelength combination having reference-cavity compensation function | |
| US9599460B2 (en) | Hybrid Raman and Brillouin scattering in few-mode fibers | |
| CN103674117B (en) | Measure entirely method and device with weak optical fiber Bragg grating temperature and strain based on Raman scattering simultaneously | |
| RU2413188C2 (en) | Fibre-optic device for measuring temperature distribution (versions) | |
| US8734011B2 (en) | Distributed optical fiber temperature sensor based on optical fiber delay | |
| CN103278185B (en) | Cavity ring-down fiber grating sensing demodulating device based on calibrated fiber grating | |
| US11346689B2 (en) | Optical measuring system with an interrogator and a polymer-based single-mode fibre-optic sensor system | |
| CN105140777A (en) | Control method and system for output wavelength of widely tunable semiconductor laser | |
| CN102104229A (en) | Wavelength control device and method of single frequency laser | |
| CN108007603B (en) | Multi-parameter distribution measuring system based on asymmetric double-core optical fiber | |
| CN110595599B (en) | Method for reducing polarization fading of optical fiber vibration system and detection system applying same | |
| RU2510609C2 (en) | Apparatus for optical identification of measurement channels of built-in nondestructive inspection system based on fibre-optic bragg sensors | |
| CN105092085A (en) | Single-mode core-dislocated fiber temperature measurement method based on dual-coupling structure having correction function | |
| CN207036297U (en) | A kind of optical fiber grating temperature-measuring system | |
| CN102680131A (en) | Distributed fiber grating temperature measurement sensing device | |
| KR101063337B1 (en) | Fiber bragg grating sensing system using the multiplexer for multi-channel | |
| US9363011B2 (en) | Monitoring and controlling optical nodes | |
| RU2319988C2 (en) | Fiber-optic multiple sensor system, temperature/deformation detector for fiber-optic multiple sensor system, and method of recording of detector (versions) | |
| CN201985424U (en) | Wavelength control device of single frequency laser | |
| CN201130028Y (en) | Optical fibre grating sensor demodulation instrument | |
| CN103344265A (en) | Fiber bragg grating demodulation instrument | |
| CN105424218A (en) | Double-beam interference type temperature measuring device for transformer | |
| CN105910727B (en) | A method of the optical fiber containing dislocation utilizes fiber grating filter structure beat frequency thermometric | |
| Lipatnikov et al. | Fiber-Оptic Vibration Sensor «VIB-A» | |
| CN202002751U (en) | Distributed fiber temperature measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110622 |