CN110048295A - Wavelength interval tunable single dual wavelength fibre laser based on Sagnac ring - Google Patents
Wavelength interval tunable single dual wavelength fibre laser based on Sagnac ring Download PDFInfo
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- CN110048295A CN110048295A CN201910354170.2A CN201910354170A CN110048295A CN 110048295 A CN110048295 A CN 110048295A CN 201910354170 A CN201910354170 A CN 201910354170A CN 110048295 A CN110048295 A CN 110048295A
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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
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06712—Polarising fibre; Polariser
-
- 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
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
-
- 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
- H01S3/10061—Polarization control
Abstract
The present invention relates to the wavelength interval tunable single dual wavelength fibre lasers based on Sagnac ring, including pumping source, wavelength division multiplexer, Er-doped fiber, the first Polarization Controller, optical circulator, Sagnac ring, polarization-dependent isolator, the first photo-coupler and spectrometer；The pump signal of pumping source output inputs Er-doped fiber after wavelength division multiplexer, the first Polarization Controller and optical circulator, Sagnac ring are sequentially input after Erbium-doped fiber amplifier, pass through optical circulator output signal after Sagnac circle filtering, and sequentially input signal clockwise to polarization-dependent isolator, the first photo-coupler and spectrometer, the long laser of the single-double wave that spectrometer output wavelength interval is tunable.The present invention is used as gain media using Er-doped fiber, and optical circulator and polarization-dependent isolator ensure the transmission direction of light, and Sagnac ring realizes filter function, and compared to existing fiber laser, laser output wavelength interval is tunable and stabilization.
Description
Technical field
The invention belongs to technical field of photo communication, and in particular to a kind of to generate what single-double wave was grown based on Sagnac filtering
The optical fiber laser that wavelength interval is tunable.
Background technique
Multi-wavelength optical fiber laser can reduce the cost of communication system, quickly grow, because it is in optical sensing and wavelength-division
The concern of more and more people is attracted in multiplexing field with powerful potential application range.Multi-wavelength optical fiber laser can expire
The foot requirement to fibre system capacity instantly, and economy is high, has in fibre optical sensor, detector and wavelength-division multiplex system
Wide application prospect, the multi-wavelength optical fiber laser that wavelength interval is tunable also just have important researching value.
So far, it has been reported that going out a variety of methods may be implemented tunable multi-wavelength output, for example use phase shift
Grating, chirp grating, saturated absorbing body, Mach-Zender interferometer structure etc., but these methods that there are structures is complex,
The deficiencies of higher cost.Sagnac ring has structure simple as a kind of special comb filter, and tunability is good, economical
The advantages that property is good, and it is widely used in fiber optic communication field.The single-double wave of Tunable wavelengh space based on Sagnac ring is long
The spacing of optical fiber laser is tunable to be mainly based upon the filter function of Sagnac ring, passes through the rotation angle of control Polarization Controller
The tunable multi-wavelength output for spending to realize, easy to operate and good economy performance.
Summary of the invention
Based on the above deficiencies in the existing technologies, the present invention provides the wavelength interval tunable single based on Sagnac ring
Dual wavelength fibre laser.
In order to achieve the above object of the invention, the invention adopts the following technical scheme:
Wavelength interval tunable single dual wavelength fibre laser based on Sagnac ring, including pumping source, wavelength division multiplexer,
Er-doped fiber, the first Polarization Controller, optical circulator, Sagnac ring, polarization-dependent isolator, the first photo-coupler and spectrum
Instrument；The pump signal of pumping source output inputs Er-doped fiber after wavelength division multiplexer, and the is sequentially input after Erbium-doped fiber amplifier
One Polarization Controller and optical circulator, Sagnac ring by optical circulator output signal after Sagnac circle filtering, and make signal
It sequentially inputs clockwise to polarization-dependent isolator, the first photo-coupler and spectrometer, spectrometer output wavelength interval is tunable
The long laser of single-double wave.
Preferably, the Sagnac ring includes the second photo-coupler, polarization maintaining optical fibre and the second Polarization Controller.
Preferably, the pumping source is connect with wavelength division multiplexer by optical fiber, wavelength division multiplexer and Er-doped fiber
One end connected by optical fiber, the other end of Er-doped fiber connect with one end of the first Polarization Controller, the first Polarization Controller
The other end and the first port of optical circulator connected by optical fiber, the of the second port of optical circulator and the second photo-coupler
Single port connection, the second port of the second photo-coupler and one end of polarization maintaining optical fibre connect, the other end of polarization maintaining optical fibre and second
One end of Polarization Controller is connected by optical fiber, and the third port of the other end of the second Polarization Controller and the second photo-coupler is logical
Optical fiber is crossed to be connected, the first end of the third port of optical circulator and polarization-dependent isolator is connected by optical fiber, polarization correlation every
The other end from device is connect with the first port of the first photo-coupler by optical fiber, the second port and wavelength-division of the first photo-coupler
Multiplexer is connected by optical fiber, and the third port of the first photo-coupler is connect with spectrometer by optical fiber.
Preferably, the first port of first photo-coupler is 90% port, and second port is 10% port.
Preferably, the first port of second photo-coupler is 50% port, and second port is 50% port.
Preferably, the working range of first photo-coupler and the second photo-coupler be 1530~
1570nm。
Preferably, the gain ranging of the Er-doped fiber is 1530~1570nm.
Preferably, the pump signal is 980nm pump signal.
Compared with prior art, the present invention beneficial effect is:
The present invention, as gain media, the biography of light is ensured using optical circulator and polarization-dependent isolator using Er-doped fiber
Filter function is realized using Sagnac ring, compared to existing single-double wave long optical fibers laser, laser output wavelength in defeated direction
Be spaced it is tunable, and export it is more stable, applicable range is wider.
The structure of laser of the present invention is simple, it is at low cost, be easy to fibre system is integrated, wavelength interval is tunable, line width,
Output, the stability of laser output that single-double wave length can be achieved are good, and it is especially suitable for optic communication, light sensing, photoproduction microwave letters
The technical fields such as number source.
Detailed description of the invention
Fig. 1 is the knot of the tunable single-double wave long optical fibers laser in wavelength interval of the embodiment of the present invention based on Sagnac ring
Structure schematic diagram；
Fig. 2 is the list of the tunable single-double wave long optical fibers laser in wavelength interval of the embodiment of the present invention based on Sagnac ring
Wavelength output waveform figure；
Fig. 3 is the double of the tunable single-double wave long optical fibers laser in wavelength interval of the embodiment of the present invention based on Sagnac ring
Wavelength output waveform figure.
Specific embodiment
In order to illustrate the embodiments of the present invention more clearly, Detailed description of the invention a specific embodiment of the invention will be compareed below.
As shown in Figure 1, the tunable single-double wave long optical fibers in the wavelength interval based on Sagnac ring of the embodiment of the present invention swash
Light device, including pumping source 1, wavelength division multiplexer 2, Er-doped fiber 3, the first Polarization Controller 4-1, the second Polarization Controller 4-2, light
Circulator 5, the first photo-coupler 6-1, the second photo-coupler 6-2, polarization maintaining optical fibre 7, polarization-dependent isolator 8, spectrometer 9, mix
The gain ranging of erbium optical fiber 3 is 1530nm to 1570nm.First photo-coupler 6-1, the second photo-coupler 6-2 working range be
1530nm to 1570nm, the port h of the second photo-coupler 6-2 is as laser output mouth.
Pumping source 1 is connect with wavelength division multiplexer 2 by optical fiber, and wavelength division multiplexer 2 is connect with an Er-doped fiber 3, er-doped
Another port of optical fiber 3 is connect with one end of the first Polarization Controller 4-1, the other end and light of the first Polarization Controller 4-1
The port a of circulator 5 is connected by optical fiber, and the port d of the port b of optical circulator 5 and the first photo-coupler 6-1 are connected by optical fiber
It connects, the port e of the first photo-coupler 6-1 is connect with a polarization maintaining optical fibre 7, another port of polarization maintaining optical fibre 7 and the second polarization
One end of controller 4-2 is connected, and the other end of the second Polarization Controller 4-2 is connected with the port f of the first photo-coupler 6-1, light
The port c of circulator 5 is connect with one end of polarization-dependent isolator 8 by optical fiber, the another port of polarization-dependent isolator 8 with
The port g of second photo-coupler 6-2 is connected by optical fiber, and the port i of the second photo-coupler 6-2 is connect with wavelength division multiplexer 2, the
The port h of two photo-coupler 6-2 is connect with spectrometer 9 by optical fiber, obtains exporting from spectrometer 9 stable and tunable wave length
The long laser output of single-double wave.Wherein, the port d of the first photo-coupler 6-1 is 50% port, and port e is 50% port；Second
The port g of photo-coupler 6-2 is 90% port, and port i is 10% port.
The embodiment of the present invention uses a PMF containing polarization maintaining optical fibre, the first photo-coupler 6-1 and the second Polarization Controller 4-2
Sagnac ring realize filter function, while by the polarization state and laser cavity of control Polarization Controller angular adjustment laser
Loss, thus obtain different wave length laser output.
The control for the single-double wave long optical fibers laser that the wavelength interval based on Sagnac ring of the embodiment of the present invention is tunable
Principle are as follows: the 980nm pump signal of narrow line width regulatable laser output flows into Er-doped fiber EDF after wavelength division multiplexer,
Through Er-doped fiber EDFA amplification after, through the port optical circulator a flow into the port b, by one 50/50 the first photo-coupler,
It is filtered in the Sagnac ring of a piece polarization maintaining optical fibre and second Polarization Controller composition, the waveform of generation passes through the first optocoupler
The port e of clutch flows into the port d, then flows into the port c by the port b of optical circulator, flows into the related isolation of polarization clockwise
Device PDI, it is ensured that optical path then flows into one 90,/10 second photo-coupler, in 90% return cavity clockwise along propagating clockwise
It continues cycling through, 10% laser output is observed by spectrometer (AQ6370B).In addition, opening pump light source 1, pump is adjusted
Pu power controls laser output power；Suitable Er-doped fiber 3 and polarization maintaining optical fibre 7 are selected, in Polarization Controller to intracavitary damage
The long output of tunable single-double wave is realized under the adjusting of consumption, as shown in Figures 2 and 3.In order to reduce loss, annular chamber as far as possible
The tie point of interior each device is directly fused together.
The present invention uses Er-doped fiber as gain media, true using the optical circulator and polarization-dependent isolator of three ports
The transmission direction for protecting light realizes filter function using Sagnac ring, compared to existing single-double wave long optical fibers laser, laser
Output wavelength interval is tunable, and output is more stable, and applicable range is wider.The structure of laser of the present invention is simple, cost
It is low, be easy to that fibre system is integrated, wavelength interval is tunable, line width, the stabilization that the long output of single-double wave, laser output can be achieved
Property is good, and it is especially suitable for the technical fields such as optic communication, light sensing, photo-induced microwave signal source.
The above is only that the preferred embodiment of the present invention and principle are described in detail, to the common skill of this field
For art personnel, the thought provided according to the present invention will change in specific embodiment, and these changes should also regard
For protection scope of the present invention.
Claims (8)
1. the wavelength interval tunable single dual wavelength fibre laser based on Sagnac ring, which is characterized in that including pumping source, wave
Division multiplexer, Er-doped fiber, the first Polarization Controller, optical circulator, Sagnac ring, polarization-dependent isolator, the first optical coupling
Device and spectrometer；Pumping source output pump signal Er-doped fiber is inputted after wavelength division multiplexer, after Erbium-doped fiber amplifier according to
The first Polarization Controller of secondary input and optical circulator, Sagnac ring pass through optical circulator output signal after Sagnac circle filtering,
And sequentially input signal clockwise to polarization-dependent isolator, the first photo-coupler and spectrometer, between spectrometer output wavelength
Every the long laser of tunable single-double wave.
2. the wavelength interval tunable single dual wavelength fibre laser according to claim 1 based on Sagnac ring, special
Sign is that the Sagnac ring includes the second photo-coupler, polarization maintaining optical fibre and the second Polarization Controller.
3. the wavelength interval tunable single dual wavelength fibre laser according to claim 2 based on Sagnac ring, special
Sign is that the pumping source is connect with wavelength division multiplexer by optical fiber, and one end of wavelength division multiplexer and Er-doped fiber passes through optical fiber
Connection, the other end of Er-doped fiber are connect with one end of the first Polarization Controller, the other end and the ring of light of the first Polarization Controller
The first port of row device is connected by optical fiber, and the second port of optical circulator is connect with the first port of the second photo-coupler, the
The second port of two photo-couplers and one end of polarization maintaining optical fibre connect, and the one of the other end of polarization maintaining optical fibre and the second Polarization Controller
End is connected by optical fiber, and the other end of the second Polarization Controller is connected with the third port of the second photo-coupler by optical fiber, light
The third port of circulator and the first end of polarization-dependent isolator are connected by optical fiber, the other end of polarization-dependent isolator with
The first port of first photo-coupler is connected by optical fiber, and the second port and wavelength division multiplexer of the first photo-coupler pass through optical fiber
Connection, the third port of the first photo-coupler are connect with spectrometer by optical fiber.
4. the wavelength interval tunable single dual wavelength fibre laser according to claim 3 based on Sagnac ring, special
Sign is that the first port of first photo-coupler is 90% port, and second port is 10% port.
5. the wavelength interval tunable single dual wavelength fibre laser according to claim 3 based on Sagnac ring, special
Sign is that the first port of second photo-coupler is 50% port, and second port is 50% port.
6. the wavelength interval tunable single dual wavelength fibre laser according to claim 3 based on Sagnac ring, special
Sign is that the working range of first photo-coupler and the second photo-coupler is 1530~1570nm.
7. the wavelength interval tunable single dual wavelength fibre laser according to claim 3 based on Sagnac ring, special
Sign is that the gain ranging of the Er-doped fiber is 1530~1570nm.
8. the wavelength interval tunable single dual-wavelength optical-fiber laser according to claim 1-7 based on Sagnac ring
Device, which is characterized in that the pump signal is 980nm pump signal.
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| CN201910354170.2A CN110048295B (en) | 2019-04-29 | 2019-04-29 | Wavelength interval tunable single-wavelength and double-wavelength fiber laser based on Sagnac ring |
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| CN201910354170.2A CN110048295B (en) | 2019-04-29 | 2019-04-29 | Wavelength interval tunable single-wavelength and double-wavelength fiber laser based on Sagnac ring |
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| CN110048295B CN110048295B (en) | 2020-07-24 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162434A (en) * | 2019-12-26 | 2020-05-15 | 浙江大学 | Continuous adjustable dual-wavelength narrow-bandwidth optical fiber laser based on dispersion cavity gain modulation |
| CN112448256A (en) * | 2020-12-01 | 2021-03-05 | 杭州电子科技大学 | Fiber laser capable of simultaneously realizing mode locking and switching single and double wavelengths |
| CN112838466A (en) * | 2019-11-25 | 2021-05-25 | 北京交通大学 | Switchable and tunable multi-wavelength fiber laser |
| CN113091603A (en) * | 2021-04-01 | 2021-07-09 | 深圳大学 | Interference device with adjustable free spectral range |
| CN113572003A (en) * | 2021-07-05 | 2021-10-29 | 杭州电子科技大学 | Channel interval tunable multi-wavelength fiber laser based on double Sagnac rings |
| CN117833001A (en) * | 2024-03-01 | 2024-04-05 | 中北大学 | Tunable narrow linewidth self-excited Brillouin fiber laser |
| CN117833001B (en) * | 2024-03-01 | 2024-05-10 | 中北大学 | Tunable narrow linewidth self-excited Brillouin fiber laser |
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| CN102412499A (en) * | 2011-09-22 | 2012-04-11 | 杭州电子科技大学 | Adjustable ring-shaped cavity erbium-doped optical-fiber multi-wavelength laser based on cascade HiBi optical fibers and Sagnac rings |
| CN207009886U (en) * | 2017-04-21 | 2018-02-13 | 中国计量大学 | A kind of Wavelength stabilized erbium doped fiber laser |
| US10218143B2 (en) * | 2017-02-24 | 2019-02-26 | Research Foundation Of The City University Of New York | Dual output semiconductor optical amplifier-based tunable fiber laser |
| EP3015820B1 (en) * | 2014-10-29 | 2019-06-05 | Honeywell International Inc. | Compensated broadband fiber light source with stable mean wavelength for a fiber optic gyro |
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| CN102306896A (en) * | 2011-08-18 | 2012-01-04 | 厦门大学 | Graphene-based freely-transformable multi-group multi-wavelength rare earth doped fiber laser |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112838466A (en) * | 2019-11-25 | 2021-05-25 | 北京交通大学 | Switchable and tunable multi-wavelength fiber laser |
| CN111162434A (en) * | 2019-12-26 | 2020-05-15 | 浙江大学 | Continuous adjustable dual-wavelength narrow-bandwidth optical fiber laser based on dispersion cavity gain modulation |
| CN111162434B (en) * | 2019-12-26 | 2021-02-23 | 浙江大学 | Continuous adjustable dual-wavelength narrow-bandwidth optical fiber laser based on dispersion cavity gain modulation |
| CN112448256A (en) * | 2020-12-01 | 2021-03-05 | 杭州电子科技大学 | Fiber laser capable of simultaneously realizing mode locking and switching single and double wavelengths |
| CN112448256B (en) * | 2020-12-01 | 2021-09-07 | 杭州电子科技大学 | Fiber laser capable of simultaneously realizing mode locking and switching single and double wavelengths |
| CN113091603A (en) * | 2021-04-01 | 2021-07-09 | 深圳大学 | Interference device with adjustable free spectral range |
| CN113572003A (en) * | 2021-07-05 | 2021-10-29 | 杭州电子科技大学 | Channel interval tunable multi-wavelength fiber laser based on double Sagnac rings |
| CN113572003B (en) * | 2021-07-05 | 2022-04-29 | 杭州电子科技大学 | Channel interval tunable multi-wavelength fiber laser based on double Sagnac rings |
| CN117833001A (en) * | 2024-03-01 | 2024-04-05 | 中北大学 | Tunable narrow linewidth self-excited Brillouin fiber laser |
| CN117833001B (en) * | 2024-03-01 | 2024-05-10 | 中北大学 | Tunable narrow linewidth self-excited Brillouin fiber laser |
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