CN106532421A - Multi-microwave local vibration source generation system based on optical phase-locked loop dual mode-locked lasers - Google Patents
Multi-microwave local vibration source generation system based on optical phase-locked loop dual mode-locked lasers Download PDFInfo
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- CN106532421A CN106532421A CN201611077618.3A CN201611077618A CN106532421A CN 106532421 A CN106532421 A CN 106532421A CN 201611077618 A CN201611077618 A CN 201611077618A CN 106532421 A CN106532421 A CN 106532421A
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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
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1106—Mode locking
- H01S3/1109—Active mode locking
-
- 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
-
- 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
- H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
-
- 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
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1106—Mode locking
- H01S3/1112—Passive mode locking
Abstract
The invention discloses a multi-microwave local vibration source generation system based on optical phase-locked loop dual mode-locked lasers. The multi-microwave local vibration source generation system comprises two mode-locked lasers, an electric-optical modulator, an optical coupler, an optical band-pass filter, a photoelectric detector, a low-noise electric amplifier, an electric oscillator, and an electric phase discriminator, wherein the 2*2 coupler is used for receiving optical signals output by the two mode-locked lasers and coupling the signals into two paths to output, one path of the optical signals are input to the optical band-pass filter to filter two low-frequency-difference sidebands to be input to the photoelectric detector; the converted electric signals pass through the low-noise electric amplifier to be input to the electric phase discriminator; and the electric signals and signals output by the electric oscillator are subjected to phase discrimination output by the electric phase discriminator, and the signals are output to the electric-optical modulator to be modulated so as to form an optical-electric closed loop to realize the optical phase-locked control. The multi-microwave local vibration source generation system has the advantages of capability of generating the stable broadband local vibration source, excellent environment interference resistance, and high suitability for engineering application.
Description
Technical field
The invention belongs to microwave photon field, is in particular a kind of double mode-locked laser based on optical phase-locked loop
Many microwave local oscillator generation systems.
Background technology
In recent years, with the progress of opto-electronic device and Fibre Optical Communication Technology, with optical signal as transport vehicle, space or
, used as medium, the demand that a certain physical message is detected, transmitted and processed is increasing for optical fiber.In traditional fiber optic communication
While technology develops, the emerging research field such as Fibre Optical Sensor, laser radar, Microwave photonics, integrated optics is occurred in that,
And achieve fast development.
In China, satellite communication system is one of big communication pillar industry of China three, at present with China Satecom to lead,
The satellite of rail service has 11, and many of subsequent satellites will put into effect.Currently, satellite communication repeater system faces choosing for sternness
War：
1 bandwidth problem.
Due to big data business demands such as radio and television, data transfer, digital broadband multimedia, mobile Internets, need badly
Carrier frequency is improved, increases bandwidth, improve message capacity.
2 electromagnetic interference problems.
The use of a large amount of electronic components, increases electromagnetic interference and signal cross-talk between system.
3 link phase perturbation problems.
Based on the demand, it is current a great problem to produce stable broadband local oscillator origin system.The product of current light local oscillator
There is proposition to produce using optical frequency com, and the generation scheme of optical frequency com includes that the cascade modulation based on manipulator is produced
Give birth to, produced based on repetition frequency shift method and silicon-based micro ring architecture, generation process can all have phase place and disturb in such scheme
Dynamic problem, it is difficult to meet the requirement of through engineering approaches.
The content of the invention
The technical problem to be solved there are provided it is a kind of can produce stable broadband local oscillator source based on
Many microwave local oscillator generation systems of the double mode-locked laser of optical phase-locked loop.
The present invention is to solve above-mentioned technical problem by the following technical programs：A kind of twin-lock mould based on optical phase-locked loop
Many microwave local oscillator generation systems of laser instrument, including：
One first mode-locked laser, which is used to provide relevant seed light source；
One second mode-locked laser, its light output end are connected with the light input end a of an electrooptic modulator, and which is used to provide width
Band optical frequency com system；
One electrooptic modulator, which is used to carry out electro-optical modulation to the optical signal of mode-locked laser input, realizes swashing locked mode
The optics shift frequency of light device；
One optical coupler, which is divided into two light input ends mouth d, e, wherein two optical output ports f, g, mode-locked laser
Output light input to the light input end d of optical coupler, and the output light signal input of electrooptic modulator is to optical coupler
Light input end e, by optical coupler by optical signal carry out coupling by two output port of f, g output synthesis optical signal；
One adjustable light wave-filter, its output optical signal for being used to receive from the outfan g ports of photo-coupler are carried out
Optical signal after filtering is simultaneously exported by filtering；
One high sensitivity photodetector, which is used to receive from optical signal after the filtering of adjustable light wave-filter outfan
Carry out opto-electronic conversion；
One low noise acoustoelectric amplipher, which is used to carry out low noise power amplification to the signal of telecommunication of photodetector output, and
Export to the input h of electric phase discriminator；
One electrical oscillator for providing the stable local oscillations signal of telecommunication, outputs signal to the input i of electric phase discriminator；
One electric phase discriminator, which is used for the output signal of low noise acoustoelectric amplipher and the voltage-controlled telecommunications of the local oscillator of optical-electronic oscillator
Frequency discrimination, ac signal of the output comprising stable phase angle information number are carried out, and is inputted to the second mode-locked laser；
One light wavelength division multiplexing, its optical signal for being used for the light output end f to photo-coupler pass through frequency different channels
Output；
One photodetector array, which is used for the optical signal of opto-electronic conversion channelizing output, and exports the steady of different frequency
Determine local oscillation signal.
Used as the technical scheme of optimization, the first mode-locked laser and the second mode-locked laser are based on quantum dot mode-locked laser
Device or optical fiber mode locked laser.
Active mode locking is made as the Mould locking machine of the technical scheme of optimization, the first mode-locked laser and the second mode-locked laser
Mechanism or passive mode-locking mechanism.
Used as the technical scheme of optimization, the repetition rate of the first described mode-locked laser and the second mode-locked laser is not
Together.
Used as the technical scheme of optimization, described electrooptic modulator is that acousto-optic modulator or double flat weighing apparatus mach zhender are strong
Degree manipulator.
Used as the technical scheme of optimization, described optical filter is tunable narrow-band band filter.
As the technical scheme of optimization, wherein the described optical-electronic oscillator output signal of telecommunication is exported with low noise acoustoelectric amplipher
Signal be same frequency signal.
As the technical scheme of optimization, wherein the described optical-electronic oscillator output signal of telecommunication is exported with low noise acoustoelectric amplipher
Signal frequency it is different, the outfan of the electric phase discriminator is connected to the electrical input c of electrooptic modulator, by Electro-optical Modulation
Device is loaded in the Different lightwave length of the second mode-locked laser.
The present invention has advantages below compared to existing technology：It is multi-wavelength on frequency domain based on mode-locked laser output spectrum
Output, two 1,2 repetition rates of mode-locked laser have differences, and receive two mode-locked laser output lights letter by 2*2 bonders 4
Number and coupled an output point two-way, wherein input to two sidebands that light narrow band filter leaches low frequency difference all the way, and
Being inputted to photodetector carries out opto-electronic conversion, and the signal of telecommunication after conversion carries out power through low noise acoustoelectric amplipher and puts
Greatly, the signal of telecommunication is carried out into phase demodulation output by electric phase discriminator with electrical oscillator, and the signal output is entered to electrooptic modulator
Row modulation, so as to form photoelectricity closed loop, realizes light lock phase control.By the phase-locking device, two mode-locked lasers are carried out stable
Property control, so as to the corresponding sides band of two mode-locked lasers carries out channelizing process by wavelength division multiplexer, finally enter to photoelectricity
Detector array carries out opto-electronic conversion, finally gives multifrequency electric signal output, exports stable signal source.Compare existing
Local vibration source generation system, the generation system of the present invention have splendid environment resistant interference performance, are very suitable for through engineering approaches application.
Description of the drawings
Fig. 1 is that the present invention is shown based on the structure of many microwave local oscillator generation systems of the double mode-locked laser of optical phase-locked loop
It is intended to.
Specific embodiment
Below embodiments of the invention are elaborated, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following enforcements
Example.
Refer to shown in Fig. 1, the present invention provides a kind of many microwave local oscillations of the double mode-locked laser based on optical phase-locked loop
Source generation system, including：
One mode-locked laser 1, which is used to provide relevant seed light source, wherein described mode-locked laser is based on quantum dot
Mode-locked laser or optical fiber mode locked laser, and locked mode mechanism can also be able to be passive mode-locking machine for active Mould locking machine system
System；
One mode-locked laser 2, its light output end are connected with the light input end a of an electrooptic modulator 3, and which is used to provide broadband
Optical frequency com system, mode-locked laser 2 produce impulse form in time domain, are multi-wavelength output form on frequency domain, and
Ensure that mode-locked laser 1 is different with 2 repetition rate of mode-locked laser；
One electrooptic modulator 3, which is used to carry out electro-optical modulation to the optical signal of the input of mode-locked laser 2, realizes to locked mode
The optics shift frequency of laser instrument 2, electrooptic modulator 3 can be acousto-optic modulator or double flat weighing apparatus mach zhender intensity modulator,
Which is used to carry out optics shift frequency to multiple optical wavelength of mode-locked laser 2；
One optical coupler 4, which is divided into two light input ends mouth d, e, wherein two optical output ports f, g, mode-locked laser
The output light of device 1 inputs to the light input end d of optical coupler 4, and the output light signal input of electrooptic modulator 3 gives optics coupling
Optical signal is carried out coupling by two output port of f, g output synthesis light letter by optical coupler 4 by the light input end e of clutch 4
Number；
One adjustable light wave-filter 5, its output optical signal for being used to receive from the outfan g ports of photo-coupler 4 enter
Optical signal after filtering is simultaneously exported by row filtering, and optical filter 5 is tunable narrow-band band filter；
One high sensitivity photodetector 6, which is used to receive believes from light after the filtering of 5 outfan of adjustable light wave-filter
Number carry out opto-electronic conversion；
One low noise acoustoelectric amplipher 7, which is used to carry out low noise power amplification to the signal of telecommunication of the output of photodetector 6,
And export to the input h of electric phase discriminator 9；
The optical-electronic oscillator 8 of the stable local oscillations signal of telecommunication of one output, exports to the input i of electric phase discriminator 9, photoelectricity
It can be same frequency signal that agitator 8 exports the signal of telecommunication with the signal of the output of low noise acoustoelectric amplipher 7, can now omit electric light
The voltage signal that electric phase discriminator 9 is exported directly is changed into the driving current that current signal is loaded into mode-locked laser 2 by manipulator 3
On, the wavelength of mode-locked laser 2 is tuned in real time.
One electric phase discriminator 9, it is voltage-controlled with the local oscillator of optical-electronic oscillator 8 which is used for the output signal to low noise acoustoelectric amplipher 7
The signal of telecommunication carries out frequency discrimination, ac signal of the output comprising stable phase angle information, and is inputted to the electric defeated of electrooptic modulator 3
Enter to hold c, 9 function of electric phase discriminator is mainly by by the output of the output signal of low noise acoustoelectric amplipher 7 and optical-electronic oscillator 8
Signal mixing obtains difference frequency signal phase place, and the phase information is loaded into the Different lightwave of mode-locked laser 2 by electrooptic modulator 3
In length；
One light wavelength division multiplexing 10, its optical signal for being used for the light output end f to photo-coupler 4 pass through frequency different channels
Change output, which is used to for the described conjunction glistening light of waves to carry out frequency-division section output, and the close optical signal of frequency carries out cochannel output, the ripple
Division multiplexer 10 includes the different output channel of multiple frequencies, and corresponding frequencies interval in glistening light of waves is closed in each output channel output
Light；The light wavelength division multiplexing 10 is exported in different channel outputs according to the frequency interval for receiving optical signal is different, the wavelength-division
Multiplexer is exported for rearranging according to frequency interval to light path, wavelength interval of the frequency interval by two mode-locked lasers 1,2
Size is determined.
One photodetector array 11, which is used for the optical signal of opto-electronic conversion channelizing output, and exports different frequency
Stable local oscillation signal.
Many microwave local oscillation origin systems should be produced based on the double mode-locked laser of phaselocked loop, be equally applicable to based on other optics
Frequency comb scheme produces the phase-locked loop of local oscillator origin system.
It is that multi-wavelength is exported on frequency domain based on mode-locked laser output spectrum, two 1,2 repetition rates of mode-locked laser
Have differences, two mode-locked lasers are received by 2*2 bonders 4 and is exported optical signal and is coupled output point two-way, wherein one
Road inputs to two sidebands that light narrow band filter 5 leaches low frequency difference, and is inputted to photodetector 6 and carries out photoelectricity
Conversion, the signal of telecommunication after conversion carry out power amplification through low noise acoustoelectric amplipher 7, the signal of telecommunication are passed through with electrical oscillator 8
Electric phase discriminator 9 carries out phase demodulation output, and the signal output is modulated to electrooptic modulator 3, so as to form photoelectricity closed loop, real
Now light locks phase control.By the phase-locking device, stability control is carried out to two mode-locked lasers, it is right so as to two mode-locked lasers
Sideband is answered to carry out channelizing process by wavelength division multiplexer 10, finally entering carries out opto-electronic conversion to photodetector array 11,
Multifrequency electric signal output is finally given, stable signal source is exported.
Particular embodiments described above, has been carried out to the purpose of the present invention, technical scheme and beneficial effect further in detail
Describe in detail bright, it should be understood that the foregoing is only the specific embodiment of the present invention, be not limited to the present invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc. should be included in the protection of the present invention
Within the scope of.
Claims (8)
1. many microwave local oscillator generation systems of a kind of double mode-locked laser based on optical phase-locked loop, it is characterised in that：Including：
One first mode-locked laser, which is used to provide relevant seed light source；
One second mode-locked laser, its light output end are connected with the light input end a of an electrooptic modulator, and which is used to provide broadband light
Learn frequency comb system；
One electrooptic modulator, which is used to carry out electro-optical modulation to the optical signal of mode-locked laser input, realizes to mode-locked laser
Optics shift frequency；
One optical coupler, which is divided into two light input ends mouth d, e, two optical output ports f, g, and wherein mode-locked laser is defeated
Go out the light input end d that light inputs to optical coupler, and the output light signal input of electrooptic modulator to the light of optical coupler
Optical signal is carried out coupling by two output port of f, g output synthesis optical signal by optical coupler by input e；
One adjustable light wave-filter, its output optical signal for being used to receive from the outfan g ports of photo-coupler are filtered
And optical signal output after filtering；
One high sensitivity photodetector, which is used to receive is carried out from optical signal after the filtering of adjustable light wave-filter outfan
Opto-electronic conversion；
One low noise acoustoelectric amplipher, which is used to carry out low noise power amplification to the signal of telecommunication of photodetector output, and exports
To the input h of electric phase discriminator；
One electrical oscillator for providing the stable local oscillations signal of telecommunication, outputs signal to the input i of electric phase discriminator；
One electric phase discriminator, which is used to enter the output signal of low noise acoustoelectric amplipher and the voltage-controlled signal of telecommunication of the local oscillator of optical-electronic oscillator
Row frequency discrimination, ac signal of the output comprising stable phase angle information, and it is inputted to the second mode-locked laser；
One light wavelength division multiplexing, its optical signal for being used for the light output end f to photo-coupler are exported by frequency different channelsization；
One photodetector array, which is used for the optical signal of opto-electronic conversion channelizing output, and exports the stable sheet of different frequency
Shake signal.
2. many microwave local oscillator generation systems of the double mode-locked laser based on optical phase-locked loop as claimed in claim 1, its
It is characterised by：First mode-locked laser and the second mode-locked laser are based on quantum dot mode-locked laser or optical fiber mode-locked laser
Device.
3. many microwave local oscillator generation systems of the double mode-locked laser based on optical phase-locked loop as claimed in claim 2, its
It is characterised by：The Mould locking machine of the first mode-locked laser and the second mode-locked laser is made as active mode locking mechanism or passive mode-locking
Mechanism.
4. many microwave local oscillator generation systems of the double mode-locked laser based on optical phase-locked loop as claimed in claim 1, its
It is characterised by：The repetition rate of the first described mode-locked laser and the second mode-locked laser is different.
5. many microwave local oscillator generation systems of the double mode-locked laser based on optical phase-locked loop as claimed in claim 1, its
It is characterised by：Described electrooptic modulator is acousto-optic modulator or double flat weighing apparatus mach zhender intensity modulator.
6. many microwave local oscillator generation systems of the double mode-locked laser based on optical phase-locked loop as claimed in claim 1, its
It is characterised by：Described optical filter is tunable narrow-band band filter.
7. many microwave local oscillator generation systems of the double mode-locked laser based on optical phase-locked loop as claimed in claim 1, its
It is characterised by：The wherein described optical-electronic oscillator output signal of telecommunication is same frequency letter with the signal of low noise acoustoelectric amplipher output
Number.
8. many microwave local oscillator generation systems of the double mode-locked laser based on optical phase-locked loop as claimed in claim 1, its
It is characterised by：The wherein described optical-electronic oscillator output signal of telecommunication is different from the frequency of the signal that low noise acoustoelectric amplipher is exported,
The outfan of the electric phase discriminator is connected to the electrical input c of electrooptic modulator, is loaded into the second locked mode by electrooptic modulator
In the Different lightwave length of laser instrument.
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| CN107390232A (en) * | 2017-06-26 | 2017-11-24 | 南京牧镭激光科技有限公司 | A kind of Doppler lidar wind detection method and device |
| CN107976816A (en) * | 2017-11-21 | 2018-05-01 | 清华大学 | Relevant double-colored light source generation system |
| CN111916982A (en) * | 2020-07-02 | 2020-11-10 | 中国空间技术研究院 | Optical local oscillator generation system and method |
| CN112332911A (en) * | 2020-11-09 | 2021-02-05 | 南京航空航天大学 | Microwave phase discrimination device and phase locking device based on microwave photon technology |
| CN113253208A (en) * | 2021-05-06 | 2021-08-13 | 河北大学 | Step frequency radar based on Fourier mode-locked photoelectric oscillator |
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| CN112332911A (en) * | 2020-11-09 | 2021-02-05 | 南京航空航天大学 | Microwave phase discrimination device and phase locking device based on microwave photon technology |
| CN113253208A (en) * | 2021-05-06 | 2021-08-13 | 河北大学 | Step frequency radar based on Fourier mode-locked photoelectric oscillator |
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| Publication number | Publication date |
|---|---|
| CN106532421B (en) | 2018-11-13 |
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