CN110323661A - A kind of multi-wavelength optical fiber laser at four times of Brillouin shift frequency wavelengths interval - Google Patents
A kind of multi-wavelength optical fiber laser at four times of Brillouin shift frequency wavelengths interval Download PDFInfo
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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
- H01S3/06716—Fibre compositions or doping with active elements
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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
- H01S3/06754—Fibre amplifiers
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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
- H01S3/06754—Fibre amplifiers
- H01S3/06783—Amplifying coupler
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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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- 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
- H01S3/30—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
- H01S3/302—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects in an optical fibre
Abstract
The invention discloses a kind of multi-wavelength optical fiber lasers at four times of Brillouin shift frequency wavelength intervals, including narrow linewidth tunable laser (1), first fiber coupler (2), first optical circulator (3), first brillouin gain optical fiber (4), first Erbium-doped fiber amplifier module (5), second optical circulator (6), second brillouin gain optical fiber (7), second fiber coupler (8), second Erbium-doped fiber amplifier module (9), the laser of narrow linewidth tunable laser output is used as Brillouin's pump light, by the way that secondary stimulated Brillouin scattering occurs respectively in the first brillouin gain optical fiber and the second brillouin gain optical fiber, it is acted on using the Linear Amplifer of two Erbium-doped fiber amplifier modules, it can produce the multi-wavelength optical fiber laser that wavelength interval is four times of Brillouin shift frequencies.The optical fiber laser structure is simple, at low cost, and potential application prospect is all had in optic communication, microwave photon and Fibre Optical Sensor.
Description
Technical field
The present invention relates to fiber optic communication, Fibre Optical Sensor and microwave photon technology field, specially a kind of four times of brillouin frequencies
The multi-wavelength optical fiber laser of shift frequency rate wavelength interval.
Background technique
Multi-wavelength optical fiber laser is the weight in division multiplex fibre-optic communication wave system as a kind of multi-channel laser light source
Component part is wanted, in addition, multi-wavelength optical fiber laser is also widely used in Fibre Optical Sensor and microwave photon technology field.It realizes
There are many kinds of the methods of multi-wavelength optical fiber laser, wherein Brillouin's multi-wavelength light based on optical fiber stimulated Brillouin scattering effect
Fibre laser can be in room in conjunction with the stimulated Brillouin scattering nonlinear effect in optical fiber and the Linear Amplifer in Er-doped fiber
Temperature is lower to obtain multi-wavelength optical-fiber laser output stable, that wavelength interval is fixed, thus is a kind of more waves for relatively having development potentiality
Long optical fibers laser.The wavelength interval of usual Brillouin's multi-wavelength optical fiber laser is 10GHz, this will limit Brillouin's multi-wavelength
The application of optical fiber laser.For the application for expanding Brillouin's multi-wavelength optical fiber laser, such as: 25GHz channel spacing wavelength-division is multiple
With fiber optic communication systematic difference demand, researcher proposes the multi-wavelength light at some twice of Brillouin shift frequency wavelength intervals
The implementation of fibre laser；More waves of three times and four times of Brillouin shift frequency wavelength intervals that wavelength interval is further widened
Long optical fibers laser also obtains some progress, and is used to 30GHz frequency range or 40GHz frequency range millimeter wave carrier letter
Number.
Xiaorui Wang et al. (Appl.Opt., 2016,55 (23), 6475-6479) utilizes four single order brillouin frequencies
It moves device cascade one annular chamber of composition and four times of Brillouin shift frequency waves is obtained by the cascade process of stimulated Brillouin scattering
The multi-wavelength optical fiber laser at long interval, obtains the output of four wavelength channels, and this structure uses four three port rings of light
Shape device and four sections of brillouin gain optical fiber, the overall length of brillouin gain optical fiber is 142km in system, and volume is big, structure is complicated, damage
Consumption is big.
XuefangZhou et al. (Opt.Quant.Electron. (2017) 49:166) utilizes two second order brillouin frequencies
It moves device cascade one annular chamber of composition and four times of Brillouin shift frequency waves is obtained by the cascade process of stimulated Brillouin scattering
The multi-wavelength optical fiber laser at long interval, obtains the output of seven wavelength channels, and this structure is 25km long using two sections
Brillouin gain optical fiber, the brillouin gain optical fiber total length of system shortens, and volume reduces, but still uses four three ends
Mouth optical circulator, optical path loss are big.
Ronghui Xu et al. (26th International Conference on Optical Fiber
Sensors, 2018, WF52) and MohammedKamil SalhAl-Mashhadani et al. (Opt.Comm.451 (2019)
116-123) two kinds of similar composite ring cavity configurations are proposed respectively, realize the multi-wavelength optical fiber of four times of Brillouin shift frequencies
Laser output.Two kinds of structures are all made of two three ports light rings and four ports light rings, two sections of brillouin gains
The ring cavity structure of optical fiber composition Compound Cavity.
Chinese patent (ZL 201610001128.9) discloses a kind of ring cavity structure being cross-linked, using two four
Ports light rings and two sections of brillouin gain optical fiber are constituted, make two second order Brillouin shift devices be cross-linked together,
In a cyclic process for cascading Stimulated Brillouin Scattering Process, successively occur to be excited for four times in two sections of brillouin gain optical fiber
The multi-wavelength optical fiber laser at four times of Brillouin shift frequency wavelength intervals is realized in Brillouin scattering.This structure has used two
Four ports light rings, system structure are simplified, and optical path loss reduces.
Summary of the invention
The technical problem to be solved by the present invention is to relatively first technologies, propose new light channel structure, are further simplified and are
System light channel structure, reduces optical path loss, realizes the multi-wavelength optical fiber laser at four times of Brillouin shift frequency wavelength intervals.
The present invention uses following technical scheme to solve above-mentioned technical problem:
The multi-wavelength optical fiber laser at four times of Brillouin shift frequency wavelengths proposed by the present invention interval, including narrow linewidth can
Tuned laser (1), the first fiber coupler (2), the first optical circulator (3), the first brillouin gain optical fiber (4), first are mixed
Erbium optic fiber amplifying module (5), the second optical circulator (6), the second brillouin gain optical fiber (7), the second fiber coupler (8),
Two Erbium-doped fiber amplifier modules (9).
The output end of narrow linewidth tunable laser (1) is connected with the port (A1) at the first fiber coupler (2) end A, and first
The port (B1) at the end fiber coupler B is connected with the first port (31) of the first optical circulator (3), and the second of the first optical circulator
Port (32) is connected with one end of the first brillouin gain optical fiber (4), and the third port (33) of the first optical circulator is mixed with first
One end of erbium optic fiber amplifying module (5) is connected, and the of the other end of the first Erbium-doped fiber amplifier module and the second optical circulator (6)
Single port (61) is connected, and connects the second brillouin gain between the second port (62) and third port (63) of the second optical circulator
4th port (64) of optical fiber (7), the second optical circulator is connected with the port (C1) of the second fiber coupler (8) C-terminal, the second light
The port (D1) at the end fine coupler D is connected with the other end of the first brillouin gain optical fiber, the port of the second fiber coupler C-terminal
(C2) it is connected with the port (A2) at the first end fiber coupler A, the port (B2) at the first end fiber coupler B is multi-wavelength optical fiber
The output port of laser.
The multi-wavelength optical fiber laser at four times of Brillouin shift frequency wavelength intervals, its working principle is that: narrow linewidth is adjustable
The laser of laser output is as the initial Brillouin's pump light (BP) for generating quadravalence Brillouin stokes light, initial Brillouin
Pump light (BP) passes through the first fiber coupler (2) and the first optical circulator (3), sends out into the first brillouin gain optical fiber (4)
After raw stimulated Brillouin scattering, the single order stokes light (S1) backwards to transmission that frequency moves down Brillouin shift frequency is obtained,
Single order stokes light (S1) enters the by the second optical circulator (6) after the amplification of the first Erbium-doped fiber amplifier module (5)
One end of two brillouin gain optical fiber (7) obtains after stimulated Brillouin scattering occurs in the second brillouin gain optical fiber (7)
Frequency moves down the second order of Stokes light (S2) backwards to transmission of Brillouin shift frequency, and second order of Stokes light (S2) enters back into
The other end of second brillouin gain optical fiber (7), after stimulated Brillouin scattering occurs in the second brillouin gain optical fiber (7),
The three rank stokes lights (S3) backwards to transmission that frequency moves down Brillouin shift frequency are obtained, second order of Stokes light (S2) exists
Second optical circulator (6) internal transmission, three rank stokes lights (S3) pass through the second optical fiber coupling from the second optical circulator (6) output
Clutch (8) enters the other end that the first brillouin gain optical fiber (4) is entered back into after the second Erbium-doped fiber amplifier module (9) is amplified,
After stimulated Brillouin scattering occurs for the first brillouin gain optical fiber (4), obtains frequency and move down Brillouin shift frequency backwards
The quadravalence stokes light (S4) of transmission, quadravalence stokes light (S4) through the second Erbium-doped fiber amplifier module (9) amplification after from
Second fiber coupler (8) output enters back into the first fiber coupler (2) and is divided, and is divided rear portion quadravalence Stokes
Light (S4) enters the first optical circulator (3), for generating eight rank stokes lights (S8), another part quadravalence stokes light
(S4) it is exported from the output port of multi-wavelength optical fiber laser, when initial Brillouin's pump light (BP) Ji Gejie stokes light function
When rate is enough, quadravalence stokes light (S4), eight rank stokes lights (S8), ten second order of Stokes light (S12) etc. each four
The stokes light of rank integral multiple can be generated by each secondary stimulated Brillouin scattering cyclic process and be swashed from multi-wavelength optical fiber
Light device output port output, to obtain the multi-wavelength optical-fiber laser that wavelength interval is four times of Brillouin shift frequencies.
Detailed description of the invention
Fig. 1 is the multi-wavelength optical fiber laser structural schematic diagram at four times of Brillouin shift frequency wavelength intervals.
Appended drawing reference in figure is explained are as follows: 1- narrow line width regulatable laser, the first fiber coupler of 2-, first ring of light of 3-
Shape device, 4- the first brillouin gain optical fiber, 5- the first Erbium-doped fiber amplifier module, the second optical circulator of 6-, the second Brillouin of 7-
Gain fibre, the second fiber coupler of 8-, 9- the second Erbium-doped fiber amplifier module, the port at the end A1- the first fiber coupler A,
The port at the end A2- the first fiber coupler A, the port at the end B1- the first fiber coupler B, the end B2- the first fiber coupler B
Port, the first port of the first optical circulator of 31-, the second port of the first optical circulator of 32-, the of the first optical circulator of 33-
Three ports, the first port of the second optical circulator of 61-, the second port of the second optical circulator of 62-, the second optical circulator of 63-
Third port, the 4th port of the second optical circulator of 64-, the port of C1- the second fiber coupler C-terminal, the second fiber coupling of C2-
The port of device C-terminal, the port at the end D1- the second fiber coupler D.
Specific embodiment
The following further describes the technical solution of the present invention with reference to the accompanying drawing.
The multi-wavelength optical fiber laser at four times of Brillouin shift frequency wavelengths proposed by the present invention interval, including narrow linewidth can
Tuned laser (1), the first fiber coupler (2), the first optical circulator (3), the first brillouin gain optical fiber (4), first are mixed
Erbium optic fiber amplifying module (5), the second optical circulator (6), the second brillouin gain optical fiber (7), the second fiber coupler (8),
Two Erbium-doped fiber amplifier modules (9).The output end of narrow linewidth tunable laser (1) and the port at the first fiber coupler (2) end A
(A1) it is connected, the port (B1) at the first end fiber coupler B is connected with the first port (31) of the first optical circulator (3), and first
The second port (32) of optical circulator is connected with one end of the first brillouin gain optical fiber (4), the third end of the first optical circulator
Mouth (33) is connected with one end of the first Erbium-doped fiber amplifier module (5), the other end and second of the first Erbium-doped fiber amplifier module
The first port (61) of optical circulator (6) is connected, and connects between the second port (62) and third port (63) of the second optical circulator
Connect the second brillouin gain optical fiber (7), the 4th port (64) of the second optical circulator and the end of the second fiber coupler (8) C-terminal
Mouth (C1) is connected, and the port (D1) at the second end fiber coupler D is connected with the other end of the first brillouin gain optical fiber, the second light
The port (C2) of fine coupler C-terminal is connected with the port (A2) at the first end fiber coupler A, the end at the first end fiber coupler B
Mouth (B2) is the output port of multi-wavelength optical fiber laser.
The laser of narrow linewidth tunable laser output is as the initial Brillouin pump for generating quadravalence Brillouin stokes light
Pu light (BP), initial Brillouin's pump light (BP) passes through the first fiber coupler (2) and the first optical circulator (3), into first
Brillouin gain optical fiber (4) occur stimulated Brillouin scattering after, obtain frequency move down Brillouin shift frequency backwards to transmission
Single order stokes light (S1), single order stokes light (S1) is after the amplification of the first Erbium-doped fiber amplifier module (5) by the
Two optical circulators (6) enter one end of the second brillouin gain optical fiber (7), occur in the second brillouin gain optical fiber (7) by
After swashing Brillouin scattering, the second order of Stokes light (S2) backwards to transmission that frequency moves down Brillouin shift frequency, second order are obtained
Stokes light (S2) enters back into the other end of the second brillouin gain optical fiber (7), the hair in the second brillouin gain optical fiber (7)
After raw stimulated Brillouin scattering, the three rank stokes lights (S3) backwards to transmission that frequency moves down Brillouin shift frequency are obtained,
Second order of Stokes light (S2) is in the second optical circulator (6) internal transmission, and three rank stokes lights (S3) are from the second optical circulator
(6) output enters back into the first Brillouin after the second fiber coupler (8) enter the amplification of the second Erbium-doped fiber amplifier module (9)
The other end of gain fibre (4) obtains frequency and moves down after stimulated Brillouin scattering occurs for the first brillouin gain optical fiber (4)
The quadravalence stokes light (S4) backwards to transmission of Brillouin shift frequency, quadravalence stokes light (S4) is through the second Er-doped fiber
The first fiber coupler (2) is entered back into from the second fiber coupler (8) output after amplification module (9) amplification to be divided, and is divided
Rear portion quadravalence stokes light (S4) enters the first optical circulator (3), another for generating eight rank stokes lights (S8)
Part quadravalence stokes light (S4) is exported from the output port of multi-wavelength optical fiber laser, when initial Brillouin's pump light (BP)
And each rank Stokes optical power it is enough when, quadravalence stokes light (S4), eight rank stokes lights (S8), ten second order stokes
The stokes light of each quadravalence integral multiple of this light (S12) etc. can be generated by each secondary stimulated Brillouin scattering cyclic process
And exported from multi-wavelength optical fiber laser output port, to obtain the multi-wavelength that wavelength interval is four times of Brillouin shift frequencies
Optical-fiber laser.
The narrow line width regulatable laser, line width is lower than 1MHz, and output power and output wavelength are tunable.
The first Erbium-doped fiber amplifier module and the second Erbium-doped fiber amplifier module are simultaneously by one 980nm or one
1480nm pump laser, a 1550nm/980nm wavelength division multiplexer or a 1550nm/1480nm wavelength division multiplexer, one section
Er-doped fiber is formed by connecting.
The first Erbium-doped fiber amplifier module and the second Erbium-doped fiber amplifier module be can Bi-directional amplifier er-doped light
Fine amplification module, and the position of Erbium-doped fiber amplifier module can optimize placement in the optical path.
First optical circulator is three ports light rings, and the second optical circulator is four ports light rings.
The first brillouin gain optical fiber and the second brillouin gain optical fiber be with identical Brillouin shift frequency (about
For the single mode optical fiber of 10GHz), length is 15km.
Method And Principle of the invention is described in detail above, to those skilled in the art, foundation
Thought provided by the invention, in place of may having change in the mode of specific implementation, these changes also should be regarded as guarantor of the invention
Protect range.
Claims (7)
1. the multi-wavelength optical fiber laser at four times of Brillouin shift frequency wavelength intervals, which is characterized in that adjustable including narrow linewidth
Laser (1), the first fiber coupler (2), the first optical circulator (3), the first brillouin gain optical fiber (4), the first er-doped light
Fine amplification module (5), the second optical circulator (6), the second brillouin gain optical fiber (7), the second fiber coupler (8), second are mixed
Erbium optic fiber amplifying module (9).
2. the output end of narrow linewidth tunable laser (1) is connected with the port (A1) at the first fiber coupler (2) end A, the first light
The port (B1) at the end fine coupler B is connected with the first port (31) of the first optical circulator (3), the second end of the first optical circulator
Mouth (32) is connected with one end of the first brillouin gain optical fiber (4), the third port (33) and the first er-doped of the first optical circulator
One end of optic fiber amplifying module (5) is connected, and the first of the other end of the first Erbium-doped fiber amplifier module and the second optical circulator (6)
Port (61) is connected, and connects the second brillouin gain light between the second port (62) and third port (63) of the second optical circulator
Fine (7), the 4th port (64) of the second optical circulator are connected with the port (C1) of the second fiber coupler (8) C-terminal, the second optical fiber
The port (D1) at the end coupler D is connected with the other end of the first brillouin gain optical fiber, the port of the second fiber coupler C-terminal
(C2) it is connected with the port (A2) at the first end fiber coupler A, the port (B2) at the first end fiber coupler B is multi-wavelength optical fiber
The output port of laser.
3. the multi-wavelength optical fiber laser at four times of Brillouin shift frequency wavelength intervals, which is characterized in that narrow linewidth adjustable laser
The laser of device output is as the initial Brillouin's pump light (BP) for generating quadravalence Brillouin stokes light, initial Brillouin's pumping
Light (BP) pass through the first fiber coupler (2) and the first optical circulator (3), into the first brillouin gain optical fiber (4) generation by
After swashing Brillouin scattering, the single order stokes light (S1) backwards to transmission that frequency moves down Brillouin shift frequency, single order are obtained
Stokes light (S1) enters the second cloth by the second optical circulator (6) after the amplification of the first Erbium-doped fiber amplifier module (5)
In one end of deep gain fibre (7) obtain frequency after stimulated Brillouin scattering occurs in the second brillouin gain optical fiber (7)
The second order of Stokes light (S2) backwards to transmission of Brillouin shift frequency is moved down, second order of Stokes light (S2) enters back into second
The other end of brillouin gain optical fiber (7) obtains after stimulated Brillouin scattering occurs in the second brillouin gain optical fiber (7)
Frequency moves down the three rank stokes lights (S3) backwards to transmission of Brillouin shift frequency, and second order of Stokes light (S2) is second
Optical circulator (6) internal transmission, three rank stokes lights (S3) pass through the second fiber coupler from the second optical circulator (6) output
(8) other end of the first brillouin gain optical fiber (4) is entered back into after entering the amplification of the second Erbium-doped fiber amplifier module (9), the
After stimulated Brillouin scattering occurs for one brillouin gain optical fiber (4), obtains frequency and move down transmitting backwards for Brillouin shift frequency
Quadravalence stokes light (S4), quadravalence stokes light (S4) is after the amplification of the second Erbium-doped fiber amplifier module (9) from second
Fiber coupler (8) output enters back into the first fiber coupler (2) and is divided, and is divided rear portion quadravalence stokes light
(S4) enter the first optical circulator (3), for generating eight rank stokes lights (S8), another part quadravalence stokes light (S4)
It is exported from the output port of multi-wavelength optical fiber laser, when initial Brillouin's pump light (BP) Ji Gejie Stokes optical power foot
When enough, quadravalence stokes light (S4), eight rank stokes lights (S8), each quadravalence of ten second order of Stokes light (S12) etc. is whole
The stokes light of several times can be generated by each secondary stimulated Brillouin scattering cyclic process and from multi-wavelength optical fiber laser
Output port output, to obtain the multi-wavelength optical-fiber laser that wavelength interval is four times of Brillouin shift frequencies.
4. the multi-wavelength optical fiber laser at four times of Brillouin shift frequency wavelengths according to claim 1 interval, feature
It is, by utilizing two optical circulators, two sections of brillouin gain optical fiber, two Erbium-doped fiber amplifier modules and two optical fiber couplings
Clutch carries out optical path connection and parameter configuration, can produce the multi-wavelength optical fiber that wavelength interval is four times of Brillouin shift frequencies and swashs
Light.
5. the multi-wavelength optical fiber laser at four times of Brillouin shift frequency wavelengths according to claim 1 interval, basic
It is characterized in that, the Brillouin shift frequency values of the first brillouin gain optical fiber and the second brillouin gain optical fiber are identical.
6. the multi-wavelength optical fiber laser at four times of Brillouin shift frequency wavelengths according to claim 1 interval, basic
Be characterized in that, the first Erbium-doped fiber amplifier module and the second Erbium-doped fiber amplifier module be can the Er-doped fiber of Bi-directional amplifier put
Big module.
7. the multi-wavelength optical fiber laser at four times of Brillouin shift frequency wavelengths according to claim 1 interval, basic
Be characterized in that, the first Erbium-doped fiber amplifier module and the second Erbium-doped fiber amplifier module can position in the optical path can be excellent
Change setting.
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| CN111834879A (en) * | 2020-07-20 | 2020-10-27 | 桂林电子科技大学 | Multi-wavelength Brillouin fiber laser |
| CN111834877A (en) * | 2020-07-20 | 2020-10-27 | 桂林电子科技大学 | Multi-wavelength Brillouin optical fiber laser with triple Brillouin frequency shift interval |
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| CN113067242A (en) * | 2021-03-22 | 2021-07-02 | 桂林电子科技大学 | Frequency shifter with four-time Brillouin frequency of optical fiber |
| CN113098609A (en) * | 2021-03-22 | 2021-07-09 | 桂林电子科技大学 | Optical generation device for 40GHz millimeter wave signal |
| CN113161859A (en) * | 2021-03-22 | 2021-07-23 | 桂林电子科技大学 | Multi-wavelength fiber laser with quadruple Brillouin frequency wavelength interval |
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| CN113067242A (en) * | 2021-03-22 | 2021-07-02 | 桂林电子科技大学 | Frequency shifter with four-time Brillouin frequency of optical fiber |
| CN113098609A (en) * | 2021-03-22 | 2021-07-09 | 桂林电子科技大学 | Optical generation device for 40GHz millimeter wave signal |
| CN113161859A (en) * | 2021-03-22 | 2021-07-23 | 桂林电子科技大学 | Multi-wavelength fiber laser with quadruple Brillouin frequency wavelength interval |
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