CN107742821A - A kind of Rapid wavelength tunable laser - Google Patents
A kind of Rapid wavelength tunable laser Download PDFInfo
- Publication number
- CN107742821A CN107742821A CN201711074576.2A CN201711074576A CN107742821A CN 107742821 A CN107742821 A CN 107742821A CN 201711074576 A CN201711074576 A CN 201711074576A CN 107742821 A CN107742821 A CN 107742821A
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- China
- Prior art keywords
- fabry
- laser
- perot
- longitudinal mode
- wavelength
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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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10084—Frequency control by seeding
- H01S3/10092—Coherent seed, e.g. injection locking
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a kind of Rapid wavelength tunable laser, including a fabry perot laser, a circulator, a Fabry Perot etalon, a coupler and drive circuit module and temperature control modules；More longitudinal mode light beams that fabry perot laser is sent reach Fabry Perot etalon after entering circulator, it is input to after Fabry Perot etalon in coupler, coupler is injected into a part of light as output, another part in fabry perot laser after annular；Temperature control modules are used to ensure that fabry perot laser and Fabry Perot etalon keep stable, the selection of wavelength and tuned speed only circuit module control driven.The present invention can improve the speed of optical switching network, it can be applied to all-optical communication network relay system and exchange system, the very fast tuning range of its tuned speed is wider, and cost simple in construction is relatively low, needs multi-wavelength optical communication field also to have fabulous application prospect at other.
Description
Technical field
The present invention relates to a kind of Rapid wavelength tunable laser, the fast of F-P laser self-injection locking is based especially on
Fast Wavelength tunable laser.
Background technology
At present, dense wave division multipurpose (DWDM) system and all-optical network can effectively improve network transmission capacity and transmission
Speed, and Wavelength tunable laser by be dwdm system and following all-optical network Primary Component.Wavelength tunable laser
The complexity of system in wavelength division multiplexed network can be reduced and reduce system energy consumption, operation cost and the raising of network can be reduced
The dynamic of optical-fiber network and flexibility, the sustainable development for communication network are significant.
Traditional laser can be divided into mechanical tuning, thermal tuning, electric current tuning etc. according to the difference of tuning methods.Based on machine
The tuned speed of the Wavelength tunable laser of tool tuning is limited to mechanical part, and tuning speed is only 10ms ranks.Due to
Temperature is a physical quantity for being difficult to accurately control, therefore the Wavelength tunable laser based on thermal tuning is difficult to keep stable.
Current main flow Wavelength tunable laser is mainly electric current tuning, for example multiple distributed Feedbacks (DFB) laser is integrated
Together, Distributed Feedback Laser realization tuning is switched by circuit, this laser cost is too high.Distributed Bragg Reflection (DBR)
Laser is the focus of Recent study, and this laser tuning speed is fast, but needs more control variable to realize, complicated
Degree is higher.Therefore existing fast tunable laser scheme still has more problem at present.
The content of the invention
For the deficiencies in the prior art, the invention provides a kind of based on the fast of F-P laser self-injection locking
Fast Wavelength tunable laser.Single longitudinal mode is filtered out from the more longitudinal mode spectrum of F-P laser first with F-P etalons, is reinjected
F-P laser is returned, suppresses other patterns, realizes that F-P laser single mode operates.By the driving electricity for quickly tuning F-P laser
Stream, translates the more longitudinal mode spectrum of pectination of F-P laser, F-P laser comb δ function formula and fixed F-P using change
Etalon pectination selects different wavelength according to driving current, realizes a wide range of tuning of wavelength through the cursor effect of spectrum.
In order to solve the above-mentioned technical problem, a kind of Rapid wavelength tunable laser proposed by the present invention, including a method
Fabry-Perot-type laser, a circulator, a Fabry-Perot etalon, a coupler and drive circuit module and
Temperature control modules；The circulator, the Fabry-Perot etalon and the coupler constitute an optical fiber cavity configuration；
The fabry-Perot type laser and the Fabry-Perot etalon are connected with the temperature control modules, the method cloth
In-Perot Laser is connected with the drive circuit module；More longitudinal mode light beams that the fabry-Perot type laser is sent enter
No. 2 ports of the circulator are simultaneously output to up to the Fabry-Perot etalon from No. 3 ports, by the method cloth
In-Perot etalons after be input in the coupler, for the coupler using a part of light as output, another part enters institute
State No. 1 port of circulator and exported from No. 2 ports, is then injected into the fabry-Perot type laser；The temperature control
Molding block is used to ensure that the fabry-Perot type laser and Fabry-Perot etalon keep stable, the drive circuit mould
Block is controlling the wavelength of more longitudinal mode light that the fabry-Perot type laser is sent, the fabry-Perot type laser output
More longitudinal mode spectrum translated with the change of the driving current of the laser, more the longitudinal mode spectrum and Fabry-Perot of translation
Etalon through spectrum alignment pattern also translate, change the single longitudinal mode filtered out, change filter out single longitudinal mode injection Fabry-
Perot Laser (1), makes fabry-Perot type laser be locked on the single longitudinal mode, and output wavelength produces saltus step, realizes wavelength
Tuning.
In the present invention, the drive circuit module is used for the speed for controlling selection and the tuning of optical source wavelength, the drive
The chip model that dynamic circuit module uses uses high speed controllable current source for THS4211.
The temperature control modules use integrated temperature control chip, chip model HTC1500.
By adopting the above-described technical solution, the beneficial effects of the invention are as follows：
Laser control mode is simple, only this single control variable of laser drive current；Wavelength tuning speed by
Driving current tuned speed determines, can reach the tuning of ns rank speed, and tuning range can reach very wide；System is integrally tied
Structure is simple, and cost is relatively low.
Brief description of the drawings
Fig. 1 is Rapid wavelength tunable laser theory diagram of the present invention.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature or step beyond, can combine in any way, unless specifically stated otherwise, each feature is a series of equivalent or class
Like an example in feature.
A kind of Rapid wavelength tunable laser proposed by the present invention, its structure as shown in figure 1, including a Fabry-
1, one, Perot (F-P) laser circulator 2, one F-P etalons 3, coupler 4 and drive circuit module and a temperature
Control module；Above-mentioned each optics is connected by optical fiber；The fabry-Perot type laser 1 and the Fabry-Perot standard
Tool 3 is connected with the temperature control modules, and the temperature control modules use integrated temperature control chip, and chip model is
HTC1500.The fabry-Perot type laser 1 is connected with the drive circuit module；The drive circuit module is used to control
The speed of selection and the tuning of optical source wavelength, the chip model that the drive circuit module uses use for THS4211
High speed controllable current source.The circulator 2, the F-P etalons 3 and the coupler 4 constitute an optical fiber cavity configuration, wherein
F-P etalons 3 are used as filtration module U, and the effect of the circulator 2 is that the more longitudinal mode light for exporting F-P laser 1 are input to F-
In P etalons 3, so that the single longitudinal mode that coupler 4 is sent is input in F-P laser 1, the effect of the coupler 4 be by
A part of single longitudinal mode light is input in F-P laser 1 by the circulator 2, using another part single longitudinal mode light as output.Drive
Dynamic circuit module driving F-P laser 1, temperature control modules control F-P laser 1 and the keeping temperature of F-P etalons 3 are constant,
The selection of wavelength and tuned speed only circuit module control driven.
In the present invention, F-P laser 1 is used as more longitudinal mode light sources, i.e., more longitudinal mode light beams that described F-P laser 1 is sent are entered
Enter No. 2 ports 21 of the circulator 2 and be output to from No. 3 ports 23 up to the F-P etalons 3, marked by the F-P
It is input to after quasi- tool 3 in the coupler 4, a part of light is entered the annular by the coupler 4
No. 1 port 21 of device 2 simultaneously exports from No. 2 ports 22, is then injected into the F-P laser 1.
The temperature control modules are used to ensure that the F-P laser and F-P etalons keep stable, the drive circuit
Module is controlling the wavelength of more longitudinal mode light that the F-P laser 1 is sent, more longitudinal mode spectrum that the F-P laser 1 exports
Translated with the change of the driving current of the laser, more longitudinal mode spectrum and the F-P etalons 3 of translation pass through the mould that spectrum is aligned
Formula also translates, and changes the single longitudinal mode filtered out, changes the single longitudinal mode injection F-P laser 1 filtered out, locks F-P laser 1
On the single longitudinal mode, output wavelength produces saltus step, realizes the tuning of wavelength.
The present invention operation principle be：The F-P etalons 3 are used in more longitudinal mode spectrum that F-P laser 1 exports filter
Go out single longitudinal mode, the only comb δ function formula of F-P laser 1 can be by described with the single longitudinal mode that F-P etalons pectination is aligned through spectrum
The optical fiber cavity configuration that circulator 2, F-P etalons 3 and coupler 4 form, swashs for the foregoing single longitudinal mode filtered out to be injected into F-P
In light device 1, F-P laser is locked on the single longitudinal mode of injection, operate F-P laser single mode, now coupler 4 will export
The light of single longitudinal mode.F-P laser driving current is tuned, more longitudinal mode spectrum that F-P laser 1 exports can be with the driving of the laser
Small range translation occurs for the change of electric current, and a wide range of saltus step can occur for the pattern being aligned with F-P etalons 3 through spectrum, change filter
The single longitudinal mode wavelength gone out, foregoing optical fiber cavity configuration are injected into F-P laser 1, F-P laser 1 is locked on the single longitudinal mode,
Realize the tuning of wavelength.The speed of wavelength tuning depends on the speed of driving current tuning.
Although above in conjunction with accompanying drawing, invention has been described, and the invention is not limited in above-mentioned specific implementation
Mode, above-mentioned embodiment is only schematical, rather than restricted.The present invention expands to any in this explanation
The new feature disclosed in book or any new combination, and disclose any new method or process the step of or any new group
Close.
Claims (3)
1. a kind of Rapid wavelength tunable laser, it is characterised in that including a fabry-Perot type laser (1), a ring
Shape device (2), a Fabry-Perot etalon (3), a coupler (4) and drive circuit module and temperature control modules；
The circulator (2), the Fabry-Perot etalon (3) and the coupler (4) constitute an optical fiber cavity configuration；It is described
Fabry-Perot type laser (1) and the Fabry-Perot etalon (3) are connected with the temperature control modules, the method cloth
In-Perot Laser (1) is connected with the drive circuit module；
More longitudinal mode light beams that the fabry-Perot type laser (1) sends enter No. 2 ports (21) of the circulator (2) simultaneously
It is output to from No. 3 ports (23) up to the Fabry-Perot etalon (3), by the Fabry-Perot etalon
(3) it is input to after in the coupler (4), a part of light is entered the ring by the coupler (4)
No. 1 port (21) of shape device (2) simultaneously exports from No. 2 ports (22), is then injected into the fabry-Perot type laser (1)；
The temperature control modules are used to ensure that the fabry-Perot type laser and Fabry-Perot etalon keep stable,
The drive circuit module is controlling the wavelength of more longitudinal mode light that the fabry-Perot type laser (1) is sent, the method cloth
In-Perot Laser (1) output more longitudinal mode spectrum translated with the change of the driving current of the laser, translation indulge
The pattern that mould spectrum is aligned with Fabry-Perot etalon (3) through spectrum also translates, and changes the single longitudinal mode filtered out, changes
The single longitudinal mode injection fabry-Perot type laser (1) filtered out, makes fabry-Perot type laser (1) be locked on the single longitudinal mode,
Output wavelength produces saltus step, realizes the tuning of wavelength.
2. Rapid wavelength tunable laser according to claim 1, it is characterised in that the drive circuit module is used to control
The speed of selection and the tuning of optical source wavelength processed, the chip model that the drive circuit module uses use for THS4211
It is high speed controllable current source.
3. according to Rapid wavelength tunable laser described in claims 1, it is characterised in that the temperature control modules use
Integrated temperature control chip, chip model HTC1500.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711074576.2A CN107742821A (en) | 2017-11-03 | 2017-11-03 | A kind of Rapid wavelength tunable laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711074576.2A CN107742821A (en) | 2017-11-03 | 2017-11-03 | A kind of Rapid wavelength tunable laser |
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| Publication Number | Publication Date |
|---|---|
| CN107742821A true CN107742821A (en) | 2018-02-27 |
Family
ID=61234285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711074576.2A Pending CN107742821A (en) | 2017-11-03 | 2017-11-03 | A kind of Rapid wavelength tunable laser |
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| CN (1) | CN107742821A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038879A (en) * | 2020-08-04 | 2020-12-04 | 烽火通信科技股份有限公司 | Cross-locked wavelength-adjustable high-speed laser and method |
| CN113924474A (en) * | 2019-05-23 | 2022-01-11 | 东京毅力科创株式会社 | Optical diagnostics of semiconductor processes using hyperspectral imaging |
| US20220216666A1 (en) * | 2019-06-05 | 2022-07-07 | South China University Of Technology | Multimode interference effect-based wide tunable single-frequency optical fiber laser |
-
2017
- 2017-11-03 CN CN201711074576.2A patent/CN107742821A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 薛纪强: ""基于FP-LD自注入锁定的快速可调谐激光器的研究"", 《中国学位论文全文数据库》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113924474A (en) * | 2019-05-23 | 2022-01-11 | 东京毅力科创株式会社 | Optical diagnostics of semiconductor processes using hyperspectral imaging |
| US20220216666A1 (en) * | 2019-06-05 | 2022-07-07 | South China University Of Technology | Multimode interference effect-based wide tunable single-frequency optical fiber laser |
| CN112038879A (en) * | 2020-08-04 | 2020-12-04 | 烽火通信科技股份有限公司 | Cross-locked wavelength-adjustable high-speed laser and method |
| CN112038879B (en) * | 2020-08-04 | 2022-04-19 | 烽火通信科技股份有限公司 | Cross-locked wavelength-adjustable high-speed laser and method |
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Application publication date: 20180227 |
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