CN104409956B - More microwave local oscillation source generating devices based on injection locking quantum dot mode-locked laser - Google Patents
More microwave local oscillation source generating devices based on injection locking quantum dot mode-locked laser Download PDFInfo
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Abstract
A kind of more microwave local oscillation source generating devices based on injection locking quantum dot mode-locked laser, including：One narrow linewidth laser, a beam splitter, its input port 1 are connected with the output end of narrow linewidth laser；The output port 2 of one first optoisolator, its input and beam splitter connects；The output port 3 of one second optoisolator, its input and beam splitter connects；One first quantum dot mode-locked laser, its input are connected with the output end of the first optoisolator；One second quantum dot mode-locked laser, its input are connected with the output end of the first optoisolator；One bundling device, its input port 1 are connected with the output end of the first quantum dot mode-locked laser；The output end connection of one wavelength division multiplexer, its input and bundling device；The output end connection of one high speed detector array, its input and wavelength division multiplexer, for the multiplex optical signal of described different channels to be carried out into opto-electronic conversion, realize the electric signal microwave signal output of different frequency.
Description
Technical field
The invention belongs to Microwave photonics field, is in particular a kind of more microwave local oscillators production based on microwave photon
Generating apparatus.
Background technology
Currently, wideband satellite communication is listed as the three big communication technologys with fiber optic communication, radio communication, to national economy and state
Family's information security plays important supporting role.Under the traction of the huge traffic capacity demands of user, satellite communication needs overloading
Ripple frequency conversion, it is therefore desirable to more microwave local oscillators.In addition, in the channelized receiver for netting electric spatial frequency spectrum detecting, it is also desirable to high
The more local vibration sources of performance.
In China, satellite communication system is that China three communicates greatly one of pillar industry, is led at present with China Satcom, in-orbit
The satellite of service has 11, and more of subsequent satellites will put into effect.Currently, satellite communication develops to multiband, broadband direction.
And traditional satellite communication repeater system faces a severe challenge including following three aspects：
1. bandwidth problem
Due to big data business demands such as radio and television, data transfer, digital broadband multimedia, mobile Internets, especially
It is military requirement, needs raising carrier frequency badly, increase bandwidth, improves message capacity.
2. load weight and power problemses
Because future communications satellite needs the compatible how individual frequency range of S, C, X, Ku, K, Ka, therefore repeater structures are complicated, increase
System weight and power consumption.
3. electromagnetic interference problem
The use of a large amount of electronic components, increases electromagnetic interference and signal cross-talk between system.
Based on the demand, it is the big research puzzle of current one to produce stable Reflection Optical Thin Film frequency comb.It is main at present
Optical frequency com produces scheme and is mainly limited to cascaded modulator generation, based on repetition frequency shift method and silicon-based micro ring structure
Produce etc..But existence and stability problem all more or less in such scheme, it is necessarily required in cascaded modulator scheme multiple
The addition of microwave source, and the drifting problem of the bias point of modulator；Acousto-optic is mainly based upon based on the scheme for repeating frequency displacement to adjust
Device processed produces, typically in MHz magnitudes, it is difficult to meet communication band demand；And the scheme based on silicon-based micro ring structure is also located at present
In laboratory stage, it is difficult to meet currently practical demand.
The content of the invention
It is an object of the present invention to provide a kind of more microwave local oscillators production based on injection locking quantum dot mode-locked laser
Generating apparatus, it is that the device for stablizing more local vibration sources is produced based on quantum dot mode-locked laser technology, overcomes conventional electronics side
Problem of the method in bandwidth, weight, volume, electromagnetic compatibility etc..
A kind of more microwave local oscillation source generating devices based on injection locking quantum dot mode-locked laser disclosed by the invention, bag
Include：
One narrow linewidth laser, it is used to provide relevant seed light source；
One beam splitter, its input port 1 are connected with the output end of narrow linewidth laser, for the seed light source to be divided
Into two-way；
The output port 2 of one first optoisolator, its input and beam splitter connects, for the light of beam splitter is defeated
Go out；
The output port 3 of one second optoisolator, its input and beam splitter connects, for the light of beam splitter is defeated
Go out；
One first quantum dot mode-locked laser, its input are connected with the output end of the first optoisolator, for providing the
One Reflection Optical Thin Film frequency comb；
One second quantum dot mode-locked laser, its input are connected with the output end of the first optoisolator, for providing the
Two Reflection Optical Thin Film frequency combs；
One bundling device, its input port 1 are connected with the output end of the first quantum dot mode-locked laser, for by described
First, the spectrum of the second Reflection Optical Thin Film frequency comb output carries out multiplex output；
The output end connection of one wavelength division multiplexer, its input and bundling device, for the multiplex light to be carried out into frequency-division section
Output, optical signal similar in frequency carry out cochannel output；
The output end connection of one high speed detector array, its input and wavelength division multiplexer, it is used for described difference
The multiplex optical signal of channel carries out opto-electronic conversion, realizes the electric signal microwave signal output of different frequency.
The invention has the advantages that it is injected separately into locking base mainly by the use of narrow linewidth laser as primary laser source
Reflection Optical Thin Film frequency comb in the first quantum dot mode-locked laser and the Reflection Optical Thin Film frequency based on the second quantum dot mode-locked laser
Rate is combed, by the Reflection Optical Thin Film frequency comb based on the first quantum dot mode-locked laser and based on the second quantum dot mode-locked laser
The minute differences at Reflection Optical Thin Film frequency comb repetition rate interval, and divide channel output effect using wavelength division multiplexer, not
Obtained in same channel from the Reflection Optical Thin Film frequency comb based on the first quantum dot mode-locked laser with being locked based on the second quantum dot
Two broach of the Reflection Optical Thin Film frequency comb of mode laser, photodetection is carried out by photodetector, obtains different frequency
Microwave telecommunication number.Realize and support S, C, X, Ku, K, Ka multibands multi-channel rf signal batch frequency conversion new are defended with what is flexibly exchanged
Star communication repeater system.
Brief description of the drawings
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in further detail, wherein：
Fig. 1 is to produce more local vibration source installation drawings based on quantum dot mode-locked laser in the present invention；
Fig. 2 is that the schematic diagram that different Reflection Optical Thin Film frequency combs produce more local vibration sources is spaced in the present invention；
Embodiment
Refer to shown in Fig. 1, the present invention provides a kind of more microwave local oscillations based on injection locking quantum dot mode-locked laser
Source generating device, including：
One narrow linewidth laser 1, it is used to provide relevant seed light source, and the narrow linewidth laser 1 is for tunable wavelength
The semiconductor laser or optical fiber laser of form, i.e. its light output wavelength and first, second quantum dot mode-locked laser 5,6
(chatting afterwards) frequency alignment therein；
One beam splitter 2, its input port 1 are connected with the output end of narrow linewidth laser 1, for by the seed light source
It is divided into two-way, the beam splitter 2 can be space structure beam splitter or optical fiber structure beam splitter either waveguide junction
The beam splitter of structure；
One first optoisolator 3, its input are connected with the output port 2 of beam splitter 2, for by the light of beam splitter 2
Output；
One second optoisolator 4, its input are connected with the output port 3 of beam splitter 2, for by the light of beam splitter 2
Output；
One first quantum dot mode-locked laser 5, its input is connected with the output end of the first optoisolator 3, for providing
First Reflection Optical Thin Film frequency comb；
One second quantum dot mode-locked laser 6, its input is connected with the output end of the first optoisolator 4, for providing
Second Reflection Optical Thin Film frequency comb；
The purpose of wherein described first, second optoisolator 3,4 mainly realizes that narrow linewidth laser 1 unidirectionally injects quantum
Point mode-locked laser 5,6, realize the injection locking of quantum dot mode-locked laser 5,6；Wherein first, second quantum dot mode-locked laser
Device 5,6 is that both ends go out optical mode, i.e. chamber both ends of the surface are coated with highly transmissive film.The first quantum dot mode-locked laser 5 and the second amount
The repetition rate of son point mode-locked laser 6 is different.Wherein narrow linewidth laser 1 export light frequency by first, second light every
From the identical frequency that device 3,4 is injected separately into first, second quantum dot mode-locked laser 5,6 of locking；Due to first, second quantum dot
The chamber length of mode-locked laser 5,6 determines the frequency interval size of its output spectrum, so as to design first, second quantum dot locked mode
Laser 5, the fine difference of 6 chambers length cause the broach interval of two Reflection Optical Thin Film frequency combs on frequency spectrum certain amounts of frequency offset f to be present0,
The consistent broach f of both light frequencies is found on frequency spectrums, by the output light frequency tuning of narrow linewidth laser 1 to the frequency position
Put fs, first, second quantum dot mode-locked laser 5,6 of locking is injected separately into by narrow linewidth laser 1, so as to obtain stability
Two high Reflection Optical Thin Film frequency combs.
One bundling device 7, its two input port connect with the output end respectively with first, second quantum dot mode-locked laser 5,6
Connect, the spectrum for the first, second quantum dot mode-locked laser 5,6 to be exported carries out multiplex output；The bundling device 7 can be with
It is the combiner device of space structure combiner device or optical fiber structure bundling device either waveguiding structure.
One wavelength division multiplexer 8, its input are connected with the output end of bundling device 7, for the multiplex light to be divided
Section output, optical signal similar in frequency carry out cochannel output, and the wavelength division multiplexer 8 includes the different output of multiple frequencies and led to
Road, and each output channel exports the light at corresponding frequencies interval in multiplex light；The wavelength division multiplexer 8 is according to the frequency for receiving optical signal
Rate interval difference exports in different channel outputs, and the wavelength division multiplexer is used for defeated according to frequency interval rearrangement to light path
Go out；Wherein, frequency interval is determined by the broach frequency interval size of two quantum dot mode-locked lasers 5,6, and the wavelength-division is answered
With device 8 can be based on array wave-guide grating structure or based on optical fiber grating structure, or based on F-P filter
Ripple device structure.
Two of which broach frequency interval different the first quantum dot mode-locked laser 5 and the second quantum dot mode-locked laser
6 couple input light wavelength division multiplexing 8 by combiner device 7, and difference frequency beat frequency, production are carried out by different optical frequency com difference broach
The raw multiple microwave frequencies for meeting light comb tooth difference on the frequency, f0, f0+(f1-f2), f0+2(f1-f2), f0+3(f1-f2) ... ..., f0+n
(f1-f2), realize and support S, C, X, Ku, K, Ka multiband multi-channel rf signal batch frequency conversions are led to the New Satellite flexibly exchanged
Believe repeater system.
One high speed detector array 9, its input are connected with the output end of wavelength division multiplexer 8, its be used for by it is described not
The multiplex optical signal of cochannel carries out opto-electronic conversion, realizes the electric signal microwave signal output of different frequency；The photodetector
Each photodetector passage different from wavelength division multiplexer 8 in array 9 is connected, for detecting the modulation of different frequency
Optical signal.The photodetector array 9 carries out opto-electronic conversion, the electric signal model of different detector outputs to the optical signal received
Difference is enclosed, to produce Multiband microwave signal, the photodetector array 9 can be that indium phosphide can also be silicon substrate
Material, bandwidth is more wide better.
Fig. 2 gives in the present invention and produces optical frequency com and by broach interval based on quantum dot mode-locked laser 5,6
Two different frequency combs enter the schematic diagram that photodetector beat frequency produces more microwave local oscillators.As shown in Fig. 2 it is based on quantum
Point mode-locked laser 5,6 produces optical frequency com, and two broadband lights of the identical light frequency of injection locking are carried out by narrow-linewidth laser 1
Frequency comb is learned, produces two metastable optical frequency coms.Utilize the different combs of the different optical frequency com of two frequency intervals
Tooth carries out difference frequency beat frequency, produces Multiband microwave signal, so as to realize that multiband multi-channel rf signal forwards, can expire well
The demand of sufficient New Satellite communication system, and can be good at applying in dense wavelength division multiplexing system.
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detail
Describe in detail bright, it should be understood that the foregoing is only the present invention specific embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., the protection of the present invention should be included in
Within the scope of.
Claims (7)
1. a kind of more microwave local oscillation source generating devices based on injection locking quantum dot mode-locked laser, including：
One narrow linewidth laser, it is used to provide relevant seed light source；
One beam splitter, its input port 1 are connected with the output end of narrow linewidth laser, for the seed light source to be divided into two
Road；
The output port 2 of one first optoisolator, its input and beam splitter connects, for by the light output of beam splitter；
The output port 3 of one second optoisolator, its input and beam splitter connects, for by the light output of beam splitter；
One first quantum dot mode-locked laser, its input are connected with the output end of the first optoisolator, wide for providing first
Band optical frequency com；
One second quantum dot mode-locked laser, its input are connected with the output end of the first optoisolator, wide for providing second
Band optical frequency com；
One bundling device, its two input port are connected with the output end respectively with first, second quantum dot mode-locked laser, for inciting somebody to action
The spectrum of the first, second quantum dot mode-locked laser output carries out multiplex output；
The output end connection of one wavelength division multiplexer, its input and bundling device, for the multiplex light to be carried out into frequency-division section output,
Optical signal similar in frequency carries out cochannel output；
The output end connection of one high speed detector array, its input and wavelength division multiplexer, it is used for described different channels
Multiplex optical signal carry out opto-electronic conversion, realize different frequency electric signal microwave signal output.
2. more microwave local oscillation source generating devices based on quantum dot mode-locked laser as claimed in claim 1, wherein described narrow
Line width laser is the semiconductor laser or optical fiber laser for tunable wavelength form, i.e. its light output wavelength and
First, the second quantum dot mode-locked laser frequency alignment therein.
3. more microwave local oscillation source generating devices as claimed in claim 2 based on injection locking quantum dot mode-locked laser, its
Described in the quantum dot mode-locked laser of quantum first, second be both ends go out optical mode, i.e. chamber both ends of the surface are coated with highly transmissive film.
4. more microwave local oscillation source generating devices as claimed in claim 3 based on injection locking quantum dot mode-locked laser, its
Described in the repetition rate of the first quantum dot mode-locked laser and the second quantum dot mode-locked laser it is different.
5. more microwave local oscillation source generating devices as claimed in claim 1 based on injection locking quantum dot mode-locked laser, its
The light frequency of middle narrow linewidth laser output is injected separately into locking first, second quantum dot lock by first, second optoisolator
The identical frequency of mode laser.
6. more microwave local oscillation source generating devices as claimed in claim 1 based on injection locking quantum dot mode-locked laser, its
Described in wavelength division multiplexer include the different output channel of multiple frequencies, and corresponding frequencies in each output channel output multiplex light
The light at interval.
7. more microwave local oscillation source generating devices as claimed in claim 6 based on injection locking quantum dot mode-locked laser, its
Each photodetector passage different from wavelength division multiplexer in middle photodetector array is connected, for detecting difference
The modulated optical signal of frequency.
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| CN110365401A (en) * | 2019-08-14 | 2019-10-22 | 上海卫星工程研究所 | Telecommunication satellite retransmission unit and its retransmission method based on Microwave photonics |
| US20230208101A1 (en) * | 2020-05-08 | 2023-06-29 | Universiteit Gent | Semiconductor mode-locked laser dual comb system |
| CN114024616B (en) * | 2021-10-22 | 2023-05-02 | 北京邮电大学 | Multi-path variable frequency structure realized by polarization state independent modulation |
| CN114244444A (en) * | 2021-12-16 | 2022-03-25 | 武汉光谷信息光电子创新中心有限公司 | On-chip device and microwave signal generation method thereof |
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| US5379309A (en) * | 1993-08-16 | 1995-01-03 | California Institute Of Technology | High frequency source having heterodyned laser oscillators injection-locked to a mode-locked laser |
| AU2003221717A1 (en) * | 2002-04-17 | 2003-11-03 | Hrl Laboratories, Llc | Method and apparatus for producing an optical output |
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| "Frequency comb generation by CW laser injection into a quantum-dot mode –locked laser";T.J.Pinkert等;《OPTICS LETTERS》;20120930;第20卷(第19期);正文第2节 * |
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Effective date of registration: 20210713 Address after: 100000 20213, 145 Tongle Road, nandulehe Town, Pinggu District, Beijing (cluster registration) Patentee after: Beijing Jialun Technology Co.,Ltd. Address before: 100083 No. 35, Qinghua East Road, Beijing, Haidian District Patentee before: Institute of Semiconductors, Chinese Academy of Sciences Effective date of registration: 20210713 Address after: 255086 Building 9, MEMS Industrial Park, 158 Zhongrun Avenue, high tech Zone, Zibo City, Shandong Province Patentee after: Shandong zhongkejilian Optoelectronic Integrated Technology Research Institute Co.,Ltd. Address before: 100000 20213, 145 Tongle Road, nandulehe Town, Pinggu District, Beijing (cluster registration) Patentee before: Beijing Jialun Technology Co.,Ltd. |