CN206673311U - Optical-electronic oscillator based on stimulated Brillouin scattering enlarge-effect - Google Patents
Optical-electronic oscillator based on stimulated Brillouin scattering enlarge-effect Download PDFInfo
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- CN206673311U CN206673311U CN201720152650.7U CN201720152650U CN206673311U CN 206673311 U CN206673311 U CN 206673311U CN 201720152650 U CN201720152650 U CN 201720152650U CN 206673311 U CN206673311 U CN 206673311U
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Abstract
The utility model provides a kind of optical-electronic oscillator based on stimulated Brillouin scattering enlarge-effect, it is related to field of photoelectric technology, it includes first laser device, circulator, fiber unit, second laser, phase-modulator, tunable attenuator, photodetector unit, tunable filter, coupler and electric amplifier.Wherein, the multiple-frequency signal as caused by the laser that the second laser exports through the phase-modulator, with the laser signal caused generation of the brillouin scattering signal backwards stimulated Brillouin scattering amplification in fiber unit exported by the first laser device, exaggerated multiple-frequency signal is divided into two paths of signals by coupler again through decay, opto-electronic conversion and filtering, signal exports as feedback signal input phase modulator, another way signal as microwave signal all the way.The utility model is by changing the output wavelength of first laser device, and then the frequency for changing feedback signal finally realizes tunable microwave signal output to obtain required multiple-frequency signal.
Description
Technical field
Field of photoelectric technology is the utility model is related to, in particular to one kind based on stimulated Brillouin scattering amplification effect
The optical-electronic oscillator answered.
Background technology
At present, adjustable microwave signal source is that satellite communication system, radar system and sensor-based system etc. are necessary and important
Signal source.With the high speed development of information technology and increasing sharply for data transmission service, to the bandwidth requirement of signal source with
Increase.Compared with traditional microwave signal source, optical-electronic oscillator has larger advantage in terms of high-frequency signal generation, and believes
Number there is relatively low phase noise, therefore, cause the great attention of researcher.
Part researcher utilizes the stimulated Brillouin scattering effect in optical fiber, and single sideband modulation light in optical-electronic oscillator is believed
Number carrier wave carry out phase shift, by by the carrier wave of light modulating signal and positive single order sideband or carrier wave with negative one rank sideband in optical detection
Beat frequency at device, realizes the change of microwave signal phase-shift phase in optical-electronic oscillator annular chamber, while coordinates adjustable microwave wave filter,
The final broadband continuously adjustable for realizing optical-electronic oscillator output signal frequency.
It is another to have part researcher defeated using the tunable microwave signal of microwave source shift frequency combination optical fiber Brillouin effect acquisition
Go out.
Newest result of study is, by the use of silica-based waveguides as the energy-storage travelling wave tube of oscillator, to produce be excited cloth in the waveguide
In deep scattering effect, with reference to light injection distributed feedback laser carry out shift frequency, by change temperature control system temperature and swash
The wavelength of light device realizes the tunability of output microwave signal.
The above achievement in research has certain practicality in terms of the generation of microwave signal, achieves and certain enters
Exhibition.But be all the laser used in the scheme reported at present, it is micro- that the tuning property of the laser limits output
The tuning performance of ripple signal, limit the application of these optical-electronic oscillator microwave signal sources.
Utility model content
The purpose of this utility model is to provide a kind of optical-electronic oscillator based on stimulated Brillouin scattering enlarge-effect, its
Above mentioned problem can effectively be improved.
What embodiment of the present utility model was realized in：
The utility model embodiment provides a kind of optical-electronic oscillator based on stimulated Brillouin scattering enlarge-effect, and it is wrapped
Include first laser device, circulator, fiber unit, second laser, phase-modulator, tunable attenuator, photodetector list
Member, tunable filter, coupler and electric amplifier；Enter from the light beam of first laser device output by the circulator
The fiber unit, and produced in the fiber unit backwards to brillouin scattering signal；From second laser output
Light beam forms multiple-frequency signal by the phase modulator modulation and enters the fiber unit, in the multiple-frequency signal with the back of the body
Carried on the back to brillouin scattering signal frequency identical signal in the fiber unit with the brillouin scattering signal backwards
To Brillouin scattering enlarge-effect, its power is exaggerated；Exaggerated multiple-frequency signal enters described adjustable by the circulator
Humorous attenuator, the multiple-frequency signal after the tunable attenuator decay are converted to electric signal through the photodetector unit；
The electric signal filters by the tunable filter, then is divided into two paths of signals by the coupler, wherein signal is made all the way
Enter the phase-modulator by electric amplifier amplification for feedback signal, another way signal exports as microwave signal.
In the utility model preferred embodiment, the first laser device is wavelength and the tunable laser of power
Device.
In the utility model preferred embodiment, the second laser is wavelength and the tunable narrow linewidth of power
Laser.
In the utility model preferred embodiment, the second laser is the narrow linewidth laser of fixed wave length.
In the utility model preferred embodiment, the fiber unit is single-mode fiber.
In the utility model preferred embodiment, the fiber unit is dispersion shifted optical fiber.
In the utility model preferred embodiment, the fiber unit is highly nonlinear optical fiber.
In the utility model preferred embodiment, the fiber unit is the highly nonlinear optical fiber that length is 5km.
In the utility model preferred embodiment, the photodetector unit is photodetector.
In the utility model preferred embodiment, the photodetector unit is balanced detector.
Relative in the prior art only using a laser output laser signal and direct by being carried out to laser signal
Modulate to export the optical-electronic oscillator of microwave signal, what the utility model embodiment provided amplifies effect based on stimulated Brillouin scattering
The optical-electronic oscillator answered using brillouin scattering signal can amplify with its frequency identical signal characteristic, with reference to phase-modulator
Multiple-frequency signal and the low noise feature of optical-electronic oscillator can be produced, by setting first laser device and second laser, make by
The laser of the second laser output is through multiple-frequency signal caused by the phase-modulator, with being exported by the first laser device
Laser signal in fiber unit caused by backwards to brillouin scattering signal occur stimulated Brillouin scattering amplification, by amplification
Multiple-frequency signal afterwards is divided into two paths of signals further across decay, opto-electronic conversion and filtering, then by coupler, wherein signal all the way
As feedback signal input phase modulator, another way signal exports as microwave signal.By setting feedback circuit so that only
The output wavelength of first laser device need to be adjusted, you can change the frequency backwards to brillouin scattering signal, and then change multiple-frequency signal
In with the signal frequency of stimulated Brillouin scattering amplification occurs backwards to brillouin scattering signal, then amplified by feedback circuit
Feedback signal afterwards and input phase modulator, change the frequency distribution of the multiple-frequency signal of phase-modulator output, thus may be used
A certain frequency signal in the multiple-frequency signal exported with the amplification of selectivity from phase-modulator, finally obtains tunable microwave
Signal output.Therefore, optical-electronic oscillator provided by the utility model can not only produce High-precision Microwave signal, and can obtain
The microwave signal with wide tunable is obtained, and phase-modulation is carried out by feedback circuit, the external equipment of costliness is eliminated, simplifies
The structure of optical-electronic oscillator, reduces volume, saves cost, greatly reduces electromagnetic interference, makes adjustable microwave signal
Acquisition becomes more simple.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the optical-electronic oscillator based on stimulated Brillouin scattering enlarge-effect in the utility model first embodiment
Structural representation；
Fig. 2 is the multiple-frequency signal spectrum that phase-modulator exports in the utility model first embodiment；
Fig. 3 is the spectrum diagram of the microwave signal that optical-electronic oscillator exports in the utility model first embodiment；
Fig. 4 is the spectrum diagram of the microwave signal of the continuously adjustable obtained in the utility model first embodiment.
Icon：100- first laser devices；110- circulators；120- fiber units；130- second lasers；140- phases are adjusted
Device processed；150- is tunable attenuator；160- photodetector units；170- tunable filters；180- couplers；190- is electrically amplified
Device；Optical-electronic oscillators of the 1000- based on stimulated Brillouin scattering enlarge-effect.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and
The component of the utility model embodiment shown can be configured to arrange and design with a variety of.
Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of the utility model protection.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
, it is necessary to explanation in description of the present utility model, term " in ", " on ", " under ", "left", "right", " interior ",
The orientation or position relationship of instructions such as " outer " are or the utility model product based on orientation shown in the drawings or position relationship
The orientation or position relationship usually put during use, it is for only for ease of description the utility model and simplifies description, without referring to
Show or imply that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, therefore can not manage
Solve as to limitation of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and can not manage
Solve to indicate or implying relative importance.
In addition, the term such as term " level ", " vertical ", " pendency " is not offered as requiring part abswolute level or pendency, and
It is to be slightly tilted.Such as " level " only refers to that its direction is more horizontal with respect to for " vertical ", is not to represent the structure
Must be fully horizontal, but can be slightly tilted.
In description of the present utility model, it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set
Put ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected,
Or it is integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, intermediary can also be passed through
It is indirectly connected, can is the connection of two element internals.For the ordinary skill in the art, can be managed with concrete condition
Solve concrete meaning of the above-mentioned term in the utility model.
In addition, the term such as " input ", " output ", " feedback ", " formation " is understood as describing a kind of optics, electricity change
Or optics, electricity processing.As " is formationed " only refer to optical signal or electric signal by the element, instrument or device afterwards there occurs
Change optically or electrically so that the optical signal or the electric signal are processed, and then are obtained and implemented technical scheme
Or the signal required for solution technical problem.
In specific embodiment of the utility model accompanying drawing, for more preferable, clearer description each element of optical-electronic oscillator
Operation principle, show described device in each several part annexation, simply substantially distinguished the relative position between each element
Relation, it can not form to the optical path direction in element or structure, the order of connection and Each part size, size, shape
Limit.
First embodiment
Fig. 1 is refer to, the present embodiment provides a kind of optical-electronic oscillator 1000 based on stimulated Brillouin scattering enlarge-effect,
It includes first laser device 100, circulator 110, fiber unit 120, second laser 130, phase-modulator 140, tunable
Attenuator 150, photodetector unit 160, tunable filter 170, coupler 180 and electric amplifier 190.
In the present embodiment, the first laser device 100 is wavelength and the tunable Agilent narrow line width regulatable of power
Laser (Agilent lightwave measurement system8164B), its output wavelength scope be 1527.60~
1565.5nm, output power range are -13~6dBm.In the present embodiment, the output wavelength of the first laser device 100 is set in
1550nm, power output are set as 5dBm.
In the present embodiment, it is respectively A ports, B ports and C-terminal mouth that the circulator 110, which has three ports, and its signal passes
Defeated direction is counterclockwise transmission.It is understood that enter the signal of circulator 110 from the B ports from the A ports
Output, the signal that circulator 110 is entered from the B ports export from the C-terminal mouth.
In the present embodiment, the circulator 110 passes through the B ports and the optical coupling of fiber unit 120.Swash from described first
The narrow-linewidth laser signal that light device 100 exports inputs from the A ports of circulator 110, is passed in circulator 110 through counter clockwise direction
It is defeated to export and enter in fiber unit 120 from the B ports of circulator 110.Into the laser signal in fiber unit 120 in optical fiber
Produced in unit 120 backwards to brillouin scattering signal, the transmission direction backwards to brillouin scattering signal and former laser signal
It is in opposite direction.
It is due to that there occurs stimulated Brillouin scattering in fiber unit 120 for laser signal backwards to brillouin scattering signal
(Stimulated Brillouin Scattering, SBS) effect and it is caused.Due to entering the laser in fiber unit 120
The power of signal is very high, and it generates highfield in inside of optical fibre, by the way that electrostriction effect occurs so that fiber medium occurs
The change of periodic density and dielectric constant, and then acoustic wavefield is generated, so as to causing incident laser signal and acoustic wavefield
Between there occurs coherent scattering, that is, generate stimulated Brillouin scattering signal, its direction of propagation and former laser signal are on the contrary, therefore
Referred to as backwards to brillouin scattering signal.
In the present embodiment, the fiber unit 120 is the general single mode fiber that length is 21km, the common list of such length
Mode fiber can strengthen the excited Brillouin occurred by the laser signal that first laser device 100 exports in fiber unit 120 and dissipate
Penetrate effect.
In the present embodiment, the second laser 130 is wavelength and the tunable Agilent narrow line width regulatable of power
Laser (N7714A multichannels narrow linewidth laser), its output wavelength scope are 1527.60~1565.5nm, power output model
Enclose for -10~14dBm.In the present embodiment, the output wavelength of second laser 130 is arranged to 1550nm, and power output is arranged to
10dBm。
In the present embodiment, the phase-modulator 140 is Photline 1550nm wave bands lithium niobate (LiNbO3) electric light phase
Position modulator 140, model MPZ-LN-20, it can be by carrying out phase-modulation to export by certain by single-frequency input signal
The multiple-frequency signal of frequency interval distribution.
In the present embodiment, the output end of the phase-modulator 140 and the optical coupling of fiber unit 120.By described
The narrow-linewidth laser signal that dual-laser device 130 exports inputs from the optical signal input of phase-modulator 140, phase modulated device
140 multiple-frequency signals of the modulation output with certain frequency interval.The multiple-frequency signal enters in fiber unit 120, with the back of the body
Interacted to brillouin scattering signal so that the power of multiple-frequency signal is exaggerated.
On say multiple-frequency signal with backwards to brillouin scattering signal interaction be based on stimulated Brillouin scattering effect in
Enlarge-effect.When heavy pumping laser signal field is incided in fiber unit 120, the electrostriction effect of light wave fields has started
Effect, is greatly enhanced the acoustic frequency vibration (phonon) of some states in fiber optic materials medium, and the acoustic wavefield enhanced is again anti-
Come over scattering process of the enhancing to incident laser, acoustic wavefield, the laser wave field (laser signal and phase that first laser device 100 exports
The multiple-frequency signal that position modulator 140 exports), the scattering light wave fields (backwards to brillouin scattering signal) of laser deposits simultaneously in media as well
It is being mutually coupled.After the intensity of incident laser reaches threshold value, make acoustic wavefield and the humidification foot of scattering light wave fields in medium
To compensate respective loss effect, being excited to amplify or vibrating effect for sensing acoustic wavefield and Brillouin scattering light wave fields can be now produced
Should.
It is understood that in the present embodiment, into the multiple-frequency signal in fiber unit 120, frequency and the back of the body
It can be put to brillouin scattering signal frequency identical signal with described backwards to brillouin scattering signal generation stimulated Brillouin scattering
Big effect, the signal switch to the energy backwards to brillouin scattering signal for amplification after signal energy, i.e. multiple-frequency signal
Overall power be exaggerated.
Because the frequency displacement of stimulated Brillouin scattering penetrates the ratio of optical frequency less than 10 with people-6, and believe backwards to Brillouin scattering
Number intensity it is very weak.Therefore in order to strengthen stimulated Brillouin scattering effect, high power, narrow linewidth have all been selected in the present embodiment
Signal source and high sensitivity, high-precision detector.
Multiple-frequency signal by stimulated Brillouin scattering amplification enters the B ports of circulator 110, by the C-terminal of circulator 110
Enter tunable attenuator 150 after mouth output.In the present embodiment, because the multiple-frequency signal power after amplification is very high, exceed
The detection range of photodetector unit 160, it is therefore desirable to tunable attenuator is added before photodetector unit 160
150, power attenuation is carried out to the multiple-frequency signal by amplification.Due to the part only output in need being exaggerated in multiple-frequency signal
The part signal of frequency, signal (noise) power of other frequencies is not high, while power attenuation is carried out, also filters out
Partial noise.
In the present embodiment, the transmission photodetector unit is 50GHz Finisar XPDV21x0RA photodetectors, and it rings
It is 1528~1564nm to answer wave-length coverage.Multiple-frequency signal after decaying by tunable attenuator 150 is by photodetector list
The input input of member 160, is converted to the input that electric signal enters tunable filter 170.
In the present embodiment, the model Santec OTF-300 of tunable filter 170, its wave-length coverage be 1530~
1570nm, with a width of 0.3nm.Tunable filter 170 filters out unwanted frequency in multiple-frequency signal, and required for exporting
The signal of frequency (by the frequency of stimulated Brillouin scattering amplification), the signal enter in coupler 180 and are divided into two paths of signals
Output.Wherein, signal is amplified as feedback signal into the input of electric amplifier 190 all the way, the feedback letter after amplification
Number inputted by the electric signal input end mouth of phase-modulator 140, for drive phase-modulator 140 produce needed for frequency interval
Multiple-frequency signal；And the another way electric signal that coupler 180 exports exports as microwave signal.
Because the multiple-frequency signal by initial phase modulation is possible to and does not have required frequency interval, therefore without
Cross feedback modulation output microwave signal be also possible to be not required frequency interval microwave signal.Now pass through regulation first
The output wavelength of laser 100, you can the corresponding frequency backwards to brillouin scattering signal changed in fiber unit 120, so that it may
To drive phase-modulator 140 to produce required frequency signal.Dimension, tunable microwave signal output can be obtained.
Fig. 2 is refer to, the frequency spectrum of the multiple-frequency signal specifically exported from phase-modulator 140 is as shown in Figure 2.Can be with from Fig. 2
Find out, in the range of 10MHz, multiple-frequency signal there are 5 signal frequencies, and such multiple-frequency signal is established for the tuning performance of microwave signal
Fixed basis.
Fig. 3 is refer to, the microwave signal spectrogram of the single-frequency exported by coupler 180 is as shown in Figure 3.Can from Fig. 3
To find out, the centre frequency of microwave signal is 22.05GHz.
Fig. 4 is refer to, when changing the output wavelength of first laser device 100, the frequency spectrum of the adjustable microwave signal of output
Figure is as shown in Figure 4.From fig. 4, it can be seen that the microwave signal of output continuously adjustabe in the range of 0~40GHz, can so recognize
To obtain tunable microwave signal output.
In the present embodiment, selected first laser device 100 and second laser 130 are all tunable for wavelength and power
Narrow linewidth laser, relative to common tunable laser, its output frequency is stable, monochromaticjty is strong and noise is low, as
Signal source can make that optical-electronic oscillator Zhong Ge roads signal quality is higher, and the microwave signal precision of output is also higher.
In other specific embodiments of the present utility model, the fiber unit 120 can also be dispersion shifted optical fiber
Or the highly nonlinear optical fiber that length is 5km, the photodetector unit 160 can also be balanced detector.
The optical-electronic oscillator 1000 based on stimulated Brillouin scattering enlarge-effect that the present embodiment provides, believes using when multifrequency
When a certain frequency in number is equal to backwards to the frequency of brillouin scattering signal, multiple-frequency signal will produce enlarge-effect, with reference to phase
Position modulator 140 can produce multiple-frequency signal and the low noise feature of optical-electronic oscillator, by adjusting first laser device 100
Output wavelength changes the wavelength of brillouin scattering signal in optical fiber, so can selectivity amplification from phase-modulator 140
A certain frequency signal in the multiple-frequency signal of output, finally obtain tunable microwave signal output.The optical-electronic oscillator is not only
High-precision microwave signal can be produced, and the microwave signal with wide tunable can be obtained, it greatly reduces electromagnetism and done
Disturb, there is the advantages of small volume, precision are high, cost is cheap and simple in construction.
In summary, the optical-electronic oscillator provided by the utility model based on stimulated Brillouin scattering enlarge-effect utilizes cloth
In deep scattered signal can amplify with its frequency identical signal characteristic, can produce multiple-frequency signal and light with reference to phase-modulator
The low noise feature of electrical oscillator, by setting first laser device and second laser, make what is exported by the second laser
Laser is through multiple-frequency signal caused by the phase-modulator, with the laser signal that is exported by the first laser device in fiber unit
In caused by backwards to brillouin scattering signal stimulated Brillouin scattering amplification occurs, the multiple-frequency signal after amplification further passes through
Overdamping, opto-electronic conversion and filtering, then two paths of signals is divided into by coupler, wherein signal is as feedback signal input phase all the way
Modulator, another way signal export as microwave signal.By setting feedback circuit so that only need to adjust the defeated of first laser device
Go out wavelength, you can change the frequency backwards to brillouin scattering signal, and then change in multiple-frequency signal with believing backwards to Brillouin scattering
Number occur the signal frequency of stimulated Brillouin scattering amplification, then feedback signal after feedback circuit is amplified and input phase
Position modulator, change the frequency distribution of the multiple-frequency signal of phase-modulator output, thus can selectivity amplification from phase
A certain frequency signal in the multiple-frequency signal of modulator output, finally obtain tunable microwave signal output.Therefore, this practicality
The optical-electronic oscillator of new offer can not only produce High-precision Microwave signal, and can obtain the microwave letter with wide tunable
Number, and phase-modulation is carried out by feedback circuit, the external equipment of costliness is eliminated, simplifies the structure of optical-electronic oscillator, contracting
Small volume, saves cost, greatly reduces electromagnetic interference, make the acquisition of adjustable microwave signal become more simple.With
The upper only preferred embodiment of the present utility model, is not limited to the utility model, for the technology of this area
For personnel, the utility model can have various modifications and variations.It is all within the spirit and principles of the utility model, made
Any modification, equivalent substitution and improvements etc., should be included within the scope of protection of the utility model.
Claims (10)
1. a kind of optical-electronic oscillator based on stimulated Brillouin scattering enlarge-effect, it is characterised in that including first laser device, ring
Shape device, fiber unit, second laser, phase-modulator, tunable attenuator, photodetector unit, tunable filter, coupling
Clutch and electric amplifier；
Enter the fiber unit by the circulator from the light beam of first laser device output, and in the fiber unit
It is middle to produce backwards to brillouin scattering signal；
Multiple-frequency signal is formed by the phase modulator modulation enter the optical fiber from the light beam of second laser output
Unit, in the multiple-frequency signal with it is described backwards to brillouin scattering signal frequency identical signal in the fiber unit and institute
State and occur to be exaggerated backwards to Brillouin scattering enlarge-effect, its power backwards to brillouin scattering signal；
Exaggerated multiple-frequency signal enters the tunable attenuator by the circulator, decays through the tunable attenuator
Multiple-frequency signal afterwards is converted to electric signal through the photodetector unit；
The electric signal filters by the tunable filter, then is divided into two paths of signals by the coupler, wherein believing all the way
Number enter the phase-modulator by electric amplifier amplification as feedback signal, another way signal is defeated as microwave signal
Go out.
2. the optical-electronic oscillator according to claim 1 based on stimulated Brillouin scattering enlarge-effect, it is characterised in that institute
First laser device is stated as wavelength and the tunable laser of power.
3. the optical-electronic oscillator according to claim 1 based on stimulated Brillouin scattering enlarge-effect, it is characterised in that institute
Second laser is stated as wavelength and the tunable narrow linewidth laser of power.
4. the optical-electronic oscillator according to claim 1 based on stimulated Brillouin scattering enlarge-effect, it is characterised in that institute
State the narrow linewidth laser that second laser is fixed wave length.
5. the optical-electronic oscillator according to claim 1 based on stimulated Brillouin scattering enlarge-effect, it is characterised in that institute
It is single-mode fiber to state fiber unit.
6. the optical-electronic oscillator according to claim 5 based on stimulated Brillouin scattering enlarge-effect, it is characterised in that institute
It is dispersion shifted optical fiber to state fiber unit.
7. the optical-electronic oscillator according to claim 5 based on stimulated Brillouin scattering enlarge-effect, it is characterised in that institute
It is highly nonlinear optical fiber to state fiber unit.
8. the optical-electronic oscillator according to claim 7 based on stimulated Brillouin scattering enlarge-effect, it is characterised in that institute
It is the highly nonlinear optical fiber that length is 5km to state fiber unit.
9. the optical-electronic oscillator according to claim 1 based on stimulated Brillouin scattering enlarge-effect, it is characterised in that institute
It is photodetector to state photodetector unit.
10. the optical-electronic oscillator according to claim 1 based on stimulated Brillouin scattering enlarge-effect, it is characterised in that
The photodetector unit is balanced detector.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785812A (en) * | 2017-02-20 | 2017-05-31 | 盐城工学院 | Optical-electronic oscillator and adjusting method based on stimulated Brillouin scattering enlarge-effect |
| CN108957147A (en) * | 2018-08-29 | 2018-12-07 | 中国科学院半导体研究所 | Infant laser signal detection and method based on the adjustable optical-electronic oscillator of stimulated Brillouin scattering |
| CN110081974A (en) * | 2019-05-22 | 2019-08-02 | 中国科学院长春光学精密机械与物理研究所 | A kind of laser linewidth measuring system |
-
2017
- 2017-02-20 CN CN201720152650.7U patent/CN206673311U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785812A (en) * | 2017-02-20 | 2017-05-31 | 盐城工学院 | Optical-electronic oscillator and adjusting method based on stimulated Brillouin scattering enlarge-effect |
| CN106785812B (en) * | 2017-02-20 | 2023-11-03 | 盐城工学院 | Photoelectric oscillator based on stimulated Brillouin scattering amplification effect and adjusting method |
| CN108957147A (en) * | 2018-08-29 | 2018-12-07 | 中国科学院半导体研究所 | Infant laser signal detection and method based on the adjustable optical-electronic oscillator of stimulated Brillouin scattering |
| CN110081974A (en) * | 2019-05-22 | 2019-08-02 | 中国科学院长春光学精密机械与物理研究所 | A kind of laser linewidth measuring system |
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