CN108650013A - A kind of system and method for the broad-band multipath channelizing based on optical frequency shift - Google Patents
A kind of system and method for the broad-band multipath channelizing based on optical frequency shift Download PDFInfo
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- CN108650013A CN108650013A CN201810352871.8A CN201810352871A CN108650013A CN 108650013 A CN108650013 A CN 108650013A CN 201810352871 A CN201810352871 A CN 201810352871A CN 108650013 A CN108650013 A CN 108650013A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
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- H04B10/503—Laser transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
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- H04B10/516—Details of coding or modulation
- H04B10/5165—Carrier suppressed; Single sideband; Double sideband or vestigial
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
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- H04B10/548—Phase or frequency modulation
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- H—ELECTRICITY
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Abstract
The system and implementation method for the broad-band multipath channelizing based on optical frequency shift that the present invention relates to a kind of, belong to microwave photon technology field.The present invention utilizes interference effect and optical frequency shift characteristic between electrooptic modulator, and the multichannel for completing wide-band microwave signal divides and high inhibition ratio is the same as intermediate frequency frequency conversion.The present invention proposes a kind of broad-band multipath channelization method based on optical frequency shift in such a way that optical frequency shift channelizing and I/Q down coversions are combined.The bright channel that broadband signal is completed by single-frequency laser combination double-side band frequency displacement of the party divides, realize that the several two-ways of mirror image are exported with intermediate-freuqncy signal each other by I/Q down coversions, both the disadvantage that conventional channelization receives the outer rejection ability difference of the light cake resistancet faced had been avoided, has in turn avoided realizing that the relevant light comb of high quality realizes complicated disadvantage in Digital Channelized Receiving based on frequency comb.
Description
Technical field
The system and implementation method for the broad-band multipath channelizing based on optical frequency shift that the present invention relates to a kind of, belong to microwave photon
Technical field.
Background technology
With multiband, the multifunctional all satellite communication system growth requirement of big bandwidth, flexibly configurable, as core
The radio-frequency front-end of center portion point needs, bandwidth of operation big, achievable different operating frequency range microwave signal channelizing transparent with frequency range
And the ability of frequency conversion simultaneously.It mainly uses traditional microwave technology by the Digital Channelized Receiving of the microwave signal received at present, become
Frequency and transmission.It is limited by microwave technology bottleneck, microwave signal channelizing bandwidth of operation is limited in GHz or less；Same structure is general
It cannot be compatible with different frequency range, that is, do not have the frequency range transparency；Multiple signals frequency conversion simultaneously, which introduces crosstalk, reduces system dynamic
Range；The channel of different function radio-frequency front-end receives, frequency conversion and transmission channel are independent of one another, it is difficult to meet multi-frequency range multifunctional one
Body demand.
It is currently based on the wide-band microwave signal channellization of microwave photon technology and is mainly wrapped with the main stream approach of intermediate frequency frequency conversion
Include the frequency conversion of multi-channel filter Digital Channelized Receiving, monochromatic light comb combines the Digital Channelized Receiving frequency conversion of filtering, the channelizing based on double light combs
Receive three kinds of frequency conversion.Wherein the frequency conversion of multi-channel filter Digital Channelized Receiving mainly uses channel independently to filter the side in conjunction with direct detection
Formula is realized.This method needs the high Q factor narrow band filter in narrowband, realisation poor；Monochromatic light comb combines the Digital Channelized Receiving of filtering
Frequency conversion mainly on the basis of single channel filters, introduces local oscillator light comb, and coherent detection receives after the orthogonal coupling of optics.It should
Class method has more strict requirements to the stability of optical filter, light comb space of teeth and stability；Using the letter of double light combs
Roadization receives frequency conversion, modulates wide-band microwave signal first and realizes that multi-wavelength replicates, then makes every light comb pair by ad hoc approach
A channel is answered, is finally individually filtered and frequency conversion exports.Such method, which generates double light comb signals of high quality, to be had sternly
The requirement of lattice.
Invention content
The technology of the present invention solves the problems, such as：For contemporary broadband signal channellization receive frequency conversion in narrow-band optical filter and
The technological difficulties that bicoherence light comb generates, provide a kind of broad-band multipath channelization method based on optical frequency shift, it is micro- to realize broadband
The same intermediate frequency frequency conversion that the channel of wave signal divides and high mirror image inhibits both had avoided conventional channelization and has received the light cake resistancet faced
The disadvantage of outer rejection ability difference in turn avoids realizing that the relevant light comb of high quality realizes complexity in Digital Channelized Receiving based on frequency comb
Disadvantage.
Technical solution of the invention is：
A kind of broad-band multipath channelizing system based on optical frequency shift, the system include：Light source, optical branching device, radio-frequency modulations
Module, local oscillator modulation module, wideband filtered module, optical frequency shift component, I/Q down conversion components and balance probe assembly；
Light source output end 1 is connected with optical branching device input terminal 2, an output end 3 and the radio-frequency modulations mould of optical branching device
The light input end 5 of block is connected, and the rf inputs 6 of radio-frequency modulations module receive the broadband rf signal of input, radio-frequency modulations
The light output end 7 of module is connected with wideband filtered module input 8, wideband filtered module output end 13 and I/Q down conversion components
Input terminal 15 be connected；Another output end 4 of optical branching device is connected with the input terminal 9 of local oscillator modulation module, local oscillator modulation
The rf inputs 10 of module receive electric local oscillator input signals, and the light output end 11 of local oscillator modulation module is defeated with optical frequency shift component
Enter end 12 to be connected, the output end 14 of optical frequency shift component is connected with the input terminal 16 of I/Q down conversion components, I/Q down coversion groups
The output end 17 of part is connected with the input terminal 18 of balance detection component, the output end 19 and balance detection of I/Q down conversion components
The input terminal 20 of component is connected, and the output end 21 of I/Q down conversion components is connected with the input terminal 22 of balance detection component, I/
The output end 23 of Q down conversion components is connected with the input terminal 24 of balance detection component.
The continuous optical signal of light source output is divided into two branches, upper branch optical signal up and down after optical branching device and send to radio frequency tune
Molding block, lower branch optical signal are sent to local oscillator modulation module；
The broadband rf signal of radio frequency source output is sent to radio-frequency modulations module, and the electric local oscillator input signals of radio frequency source output are sent
To local oscillator modulation module；
Radio-frequency modulations module is modulated to using the broadband rf signal received as drive signal on branch optical signal,
Output optical signal is sent to wideband filtered module, radio frequency tune after the broadband rf signal received is modulated by radio-frequency modulations module
The optical signal of molding block output is the double-sideband signal with optical carrier suppression；
After wideband filtered module filters out the upper side band for the optical signal that the radio-frequency modulations module received exports, send to I/Q
Down conversion components；
Local oscillator modulation module is modulated to lower branch optical signal using the electric local oscillator input signals received as drive signal
On, output optical signal is sent to optical frequency shift component after the electric local oscillator input signals received are modulated by local oscillator modulation module, this
The optical signal of the modulation module that shakes output is the double-sideband signal with optical carrier suppression；
After optical frequency shift component receives the optical signal of local oscillator modulation module output, optical signal that local oscillator modulation module is exported
After shift frequency and the upper side band filtering set, send to I/Q down conversion components；
The optical signal that I/Q down conversion components export the wideband filtered module received and the light of optical frequency shift component output are believed
Number channel division and mixing are carried out, obtains photomixing signal, and obtained photomixing signal is sent to balance detection component；
The photomixing signals revivification received is corresponding electric signal by balance detection component, and frequency subchannel is believed in output
Number.
The radio-frequency modulations module by intensity modulator (IM) realize, radio-frequency modulations module include a light input end 5,
One rf inputs 6 and a light output end 7；
The light input end 5 of radio-frequency modulations module is connected with a light output end 3 of optical branching device, radio-frequency modulations module
Rf inputs 6 receive the broadband rf signal of radio frequency source output, light output end 7 and the wideband filtered module of radio-frequency modulations module
Light input end 8 be connected；
The continuous optical signal of light source output is divided into two branches, upper branch optical signal up and down and send to radio frequency after optical branching device
The light input end 5 of modulation module, radio frequency source output broadband rf signal are sent to the rf inputs 6 of radio-frequency modulations module, radio frequency
Modulation module is realized there are corresponding driving electrodes on IM by IM, driving voltage can be applied in the driving electrodes of IM so that IM
It is operated in minimum transfer point, then the double-side band optical signal of radio-frequency modulations module output optical carrier suppression.
Local oscillator modulation module is realized that local oscillator modulation module is penetrated including a light input end 9, one by intensity modulator (IM)
Frequency input terminal 10 and a light output end 11；One 4 phase of light output end of the light input end 9 of local oscillator modulation module and optical branching device
Connection, the rf inputs 10 of local oscillator modulation module receive the electric local oscillator input signals of radio frequency source output, local oscillator modulation module
Light output end 11 is connected with the light input end 12 of optical frequency shift component；
The continuous optical signal of light source output is divided into two branches, lower branch optical signal up and down and send to local oscillator after optical branching device
The light input end 9 of modulation module, the electric local oscillator input signals of radio frequency source output are sent to the rf inputs 10 of local oscillator modulation module, this
The modulation module that shakes is realized there are corresponding driving electrodes on IM by IM, and driving voltage can be applied in the driving electrodes of IM so that
IM is operated in minimum transfer point, then the double-side band optical signal of local oscillator modulation module output optical carrier suppression.
Wideband filtered module is realized that wideband filtered module includes a light input end 8 and a light by broadband optical filter
Output end 13, the light input end 8 of wideband filtered module are connected with the light output end 7 of radio-frequency modulations module, wideband filtered module
Light output end 13 be connected with the light output end 15 of I/Q down conversion components；
After the optical signal left and right side band separation that wideband filtered module exports the radio-frequency modulations module received, obtain corresponding
Upper side band radio-frequency modulations optical signal；
Optical frequency shift component by double parallel Mach-increasing Dare modulator (DPMZM), realize parallel by superposition, each DPMZM packets
Include uplink Mach-increasing Dare modulator (MZM), downlink Mach-increasing Dare modulator (MZM) and MAIN MUX；
The uplink MZM and downlink MZM is utilized respectively single MZM Electro-optical Modulations effect and carries out Electro-optical Modulation；
After the optical signal of the MAIN MUX control uplink MZM outputs is added or subtracts each other with the downlink MZM optical signals exported,
It is sent to I/Q down conversion components by DPMZM light output ends 14；
The pumping signal of signal source output divides two-way through optical branching device, is loaded onto DPMZM uplink MZM, another way warp all the way
DPMZM downlinks MZM is loaded onto after 90 degree of electromigration phases so that be loaded into phase difference between the pumping signal of DPMZM rf inputs
It is 90 degree；DPMZM uplinks MZM is operated in minimum direct current bias point so that uplink MZM is operated in carrier suppressed modulation mode；
DPMZM downlinks MZM is operated in minimum direct current bias point so that downlink MZM is operated in carrier suppressed modulation mode；The master of DPMZM
Modulator is operated in orthogonal points so that it is that uplink MZM exports optical signal and downlink MZM output optical signals that DPMZM, which exports optical signal,
Difference, the negative one rank single sideband signals that such DPMZM outgoing carriers inhibit；Similarly, when being loaded onto DPMZM rf inputs
When phase difference is spent for -90 between pumping signal, the positive single order single sideband signals of DPMZM outgoing carriers inhibition；
I/Q down conversion components are realized by 90 degree of optical mixer units, including two light input ends, 15,16 and four light output ends
One light input end 15 of 17,19,21,23, I/Q down conversion components is connected with the light output end 13 of wideband filtered module, I/Q
Another light input end 16 of down conversion components is connected with the light output end 14 of optical frequency shift component；I/Q down coversion light output ends
17,19,21,23 are connected with the input terminal 18,20,22,24 of balance detection component.
The optical signal of optical frequency shift component output and the optical signal of wideband filtered module output are sent together to I/Q down conversion components
Afterwards, I/Q down conversion components generate four tunnels coupling optical signal, I/Q down conversion components after carrying out photomixing to the optical signal received
It is the in-phase signal that phase difference is respectively 0 degree and 180 degree to have two-way in the four tunnels coupling optical signal of output, and it is phase difference to have two-way
The respectively 90 degree orthogonal signalling spent with -90；Wherein in-phase signal is given by the output of light output end 17 and 19 of I/Q down conversion components
The input terminal 18 and 20 of balance detection component, orthogonal signalling balance detection group by the output of I/Q down coversions light output end 21 and 23
The input terminal 22 and 24 of part；
Four tunnels that balance detection component receives the output of I/Q down conversion components couple optical signal, and balance detection component is to receiving
Tetra- tunnels Dao coupling optical signal carries out the opto-electronic conversion based on square law detecting way, obtains corresponding electric intermediate-freuqncy signal.
A method of the broad-band multipath channelizing based on optical frequency shift, this method input radio frequency signal are that the broadband of 3 Δ f is micro-
Wave signal, output bandwidth are Δ f, the identical six tunnels intermediate-freuqncy signal of centre frequency；
The step of this method includes：
(1) the continuous optical signal of light source output is divided into two branches up and down after optical branching device, is respectively loaded on radio-frequency modulations
The light input end of module and local oscillator modulation module；
(2) radio frequency source output broadband rf signal is loaded onto the rf inputs of radio-frequency modulations module, by state modulator,
So that radio-frequency modulations module is operated in minimum transfer point, radio-frequency modulations module exports the double-sideband signal of optical carrier suppression, send to
Wideband filtered module；
(3) wideband filtered module filter out radio-frequency modulations output optical signal upper side band after send to the one of I/Q down conversion components
A light input end；
(4) the electric local oscillator input signals of radio frequency source output are loaded onto the rf inputs of local oscillator modulation module, pass through parameter control
System so that local oscillator modulation module is operated in minimum transfer point, and local oscillator modulation module exports the double-sideband signal of optical carrier suppression, send
To optical frequency shift component；
(5) optical frequency shift component includes first via optical frequency shift device, the second tunnel optical frequency shift device and third road optical frequency shift device, per all the way
Optical frequency shift device utilizes DPMZM to realize；When the pumping signal that DPMZM radio-frequency head loading frequencies are Δ f, DPMZM exports light carrier
When the negative one rank single sideband singal of inhibition, realize that frequency is the-first via optical frequency shift of Δ f；When DPMZM radio-frequency head loading frequencies are
The pumping signal of Δ f when DPMZM exports the positive single order single sideband singal of optical carrier suppression, realizes that frequency is the second road light of Δ f
Frequency displacement；When DPMZM radio-frequency heads are empty, realize that frequency is 0 third road optical frequency shift；
(7) optical signal of optical frequency shift component output is sent together with the optical signal that wideband filtered module exports to I/Q down coversions
Component generates four road coupled signals, and I/Q down conversion components phase difference outputs are respectively the in-phase signal of 0 degree and 180 degree, Yi Jixiang
Potential difference is respectively the orthogonal signalling of 90 degree and -90 degree；
(8) I/Q down conversion components in-phase signal and orthogonal signalling are sent to balance detection component, are obtained after balance detection respectively
It is the two-way intermediate-freuqncy signal of Δ f to take mirror image each other, bandwidth；
(9) first via light frequency-shift signaling of optical frequency shift component output obtains after I/Q down conversion components and balance probe assembly
To 1 channel and 4 channel intermediate-freuqncy signals of mirror image each other；Second road light frequency-shift signaling of optical frequency shift component output is through I/Q down coversions
After component and balance probe assembly, 3 channels and 6 channel intermediate-freuqncy signals of mirror image each other are obtained；The third of optical frequency shift component output
Road light frequency-shift signaling obtains 2 channels and 5 channel intermediate frequencies letter of mirror image each other after I/Q down conversion components and balance probe assembly
Number；All intermediate-freuqncy signal bandwidth are Δ f, and centre frequency is identical.
For the present invention compared with the existing microwave signal channelizing conversion method using microwave technology, the party is bright with following excellent
Gesture：
(1) invention is applicable to the wide-band microwave signal channellization of arbitrary working frequency range and with intermediate frequency frequency conversion, and frequency range is saturating
Bright, versatility is good.
(2) bandwidth of operation is expansible.It is superimposed by optical frequency shift module, so that it may which bandwidth of operation and letter are expanded according to user demand
Road number is realized simple.
Compared with the existing microwave signal channelizing conversion method using microwave photon technology, this aspect has such as the present invention
Lower advantage：
(1) invention realizes that broadband signal channel divides using single-frequency laser combination double-side band optical frequency shift, no light requirement filtering
The disadvantage for both having avoided conventional channelization and having received rejection ability difference outside the light cake resistancet faced is generated with complicated relevant frequency comb,
It in turn avoids realizing that the relevant light comb of high quality realizes complicated disadvantage in Digital Channelized Receiving based on frequency comb.
(2) multiplex (MUX) and same intermediate frequency can be realized using optical frequency shift combination I/Q down coversions in the invention, and the invention is adopted
Multichannel can be realized with general goods shelf products and stablize output with intermediate-freuqncy signal, and implementation method is simple and reliable, favorable expandability.
(3) a kind of broad-band multipath channelizing system and method based on optical frequency shift, it is related to optics, microwave and microwave light
Son learns technical field, for the technological difficulties that narrow-band optical filter in contemporary broadband multiplex (MUX) and bicoherence light comb generate,
Using the interference effect and optical frequency shift characteristic between electrooptic modulator, the multichannel for completing wide-band microwave signal divides and high inhibition
Than same intermediate frequency frequency conversion.The present invention proposes a kind of based on optical frequency shift in such a way that optical frequency shift channelizing and I/Q down coversions are combined
Broad-band multipath channelization method.The bright channel that broadband signal is completed by single-frequency laser combination double-side band frequency displacement of the party divides, and leads to
It crosses I/Q down coversions and realizes that the several two-ways of mirror image are exported with intermediate-freuqncy signal each other, both avoided conventional channelization and received the light faced
The disadvantage of the outer rejection ability difference of cake resistancet in turn avoids realizing that the relevant light comb of high quality is realized in Digital Channelized Receiving based on frequency comb
Complicated disadvantage.
Description of the drawings
Fig. 1 is the overall plan schematic diagram of the present invention；
Fig. 2 is embodiment of the present invention schematic diagram；
Fig. 3 is for wide-band microwave signal channellization of the present invention and with intermediate frequency frequency conversion spectrum diagram；
Fig. 4 is that local oscillator of the present invention modulates output light spectrogram；
Fig. 5 is output light spectrogram of the local oscillator of the present invention modulation output after+500MHz frequency displacements；
Fig. 6 is output light spectrogram of the local oscillator of the present invention modulation output after -500MHz frequency displacements；
Fig. 7 is the present invention with intermediate frequency frequency conversion output signal inband flatness test result；
Fig. 8 is the present invention with intermediate frequency frequency conversion output signal image rejection ratio test result.
Specific implementation mode
A method of the broad-band multipath channelizing based on optical frequency shift, steps are as follows：
Step 1：After the continuous optical signal of light source output, two branches up and down of power equalization are divided by optical branching device.On
Branch optical signal is sent to the light input end of radio-frequency modulations module, and lower branch optical signal is sent to the light input end of local oscillator modulation module,
Radio-frequency modulations module and local oscillator modulation module are operated in smallest point, it is ensured that modulation system is optical carrier suppression double sideband modulation side
Formula.Radio-frequency modulations module output signal filters out upper side band after wideband filtered, and a light for being subsequently sent to I/Q down conversion components is defeated
Enter end.Local oscillator modulation module output signal is sent to corresponding optical frequency shift component and completes shift frequency in area of light on demand, then will be after shift frequency
Output optical signal is sent to another light input end of I/Q down conversion components.Realize that subchannel is drawn in area of light by I/Q down conversion components
Divide and frequency conversion, the output optical signal of I/Q down conversion components obtain after balance detection component carries out opto-electronic conversion with intermediate frequency frequency conversion
Sub-channel signal is exported, then further can inhibit image signal by being electrically coupled unit；
Step 2：Broadband rf signal through radio-frequency modulations module loading to on the upper branch light carrier of light source output, if
It sets radio-frequency modulations and is operated in minimum transfer point, then the double-sideband signal of radio-frequency modulations module output optical carrier suppression.The signal passes through
Corresponding three upper side bands radio-frequency modulations optical signal is obtained after wideband filtered and corresponding optical branching.Electric local oscillator input signals are through local oscillator
Modulation is loaded on the lower branch light carrier of light source output, and setting local oscillator, which is modulated, is operated in minimum transfer point, local oscillator modulation output
The double-sideband signal of optical carrier suppression is sent after optical branching device is divided into three tunnels to optical frequency shift component progress-Δ f, Δ f and 0 respectively
Shift frequency；
Step 3：When input radio frequency signal is 3 Δ f wide-band microwave signals, if wanting, it is Δ f to obtain bandwidth, and frequency is identical
Six tunnel intermediate-freuqncy signals.After first via optical frequency shift-Δ f, local oscillator modulated signal upper side band is directed at RF upper side bands, by under I/Q
After frequency conversion and balance detection, acquisition centre frequency is identical, and bandwidth is the subchannel 1 and subchannel 4 of Δ f, and the two channels are mutual
For mirror image.
Similarly, after the second tunnel local oscillator modulated signal optical frequency shift Δ f, in being obtained after I/Q down coversions and balance detection
Frequency of heart is identical, and bandwidth is the subchannel 3 and subchannel 6 of Δ f, and the two channels mirror image each other.When third road local oscillator is modulated
When signal does not generate shift frequency, identical with acquisition centre frequency after balance detection by I/Q down coversions, bandwidth is the subchannel 2 of Δ f
With subchannel 5, and the two channels mirror image each other.
Each road exported after balance detection each other mirror image intermediate-freuqncy signal into can a step by corresponding electric coupler into
Row mirror image inhibits and the output of each subchannels.
The continuous optical signal of light source output is divided into two-way through optical branching device and the light to radio-frequency modulations and local oscillator modulation is sent to input
The broadband rf signal at end, radio frequency source output is loaded onto radio-frequency modulations, and the electric local oscillator input signals of radio frequency source output are loaded onto this
It shakes modulation, radio-frequency modulations and local oscillator modulation are arranged at minimum transfer point, such radio-frequency modulations and local oscillator modulation output optical signal
In do not include light carrier.The radio frequency optical signal of radio-frequency modulations output filters out upper side band through wideband filtered, obtains corresponding positive sideband
Optical signal, tri- tunnels Gong Fen generate three upper side bands (RF) to the sideband again.
Local oscillator modulation output local oscillator optical signal branch is sent to corresponding optical frequency shift component, and the optical frequency shift component is parallel by three
The DPMZM of arrangement is formed, and each DPMZM in optical frequency shift component is arranged at minimum transfer point, and uplink MZM in each DPMZM
Radiofrequency signal output difference is is respectively 90 degree, -90 degree and 0 between downlink MZM, so that each DPMZM outputs are corresponding
Single order single-side belt carrier wave inhibition optical signal, the respectively first via optical frequency shift of realization-Δ f, the second tunnel optical frequency shift of Δ f and frequency displacement are
Zero third road optical frequency shift.
When input radio frequency signal is 3GHz wide-band microwave signals, if wanting, it is 500MHz to obtain bandwidth, and centre frequency is
The intermediate-freuqncy signal of 750MHz.The signal that first via optical frequency shift exports is sent together with the RF signals exported after wideband filtered to I/
Q down conversion components generate four road coupled signals, and I/Q down conversion components phase difference outputs are respectively that 0 degree and the same of 180 degree are believed
Number and phase difference be respectively 90 degree and -90 degree orthogonal signalling, the in-phase signal and orthogonal signalling are respectively after balance detection
Obtain 1 channel of mirror image and 4 channel intermediate-freuqncy signals each other.Similarly, by the signal of the second tunnel optical frequency shift output and after wideband filtered
For the RF signals of output together after I/Q down coversions and photo-equilibrium detection, acquisition centre frequency is 750MHz, bandwidth 500MHz
Subchannel 3 and subchannel 6, and the two channels mirror image each other.By the signal of the second tunnel optical frequency shift output and through wideband filtered
The RF signals exported afterwards are together after I/Q down coversions and photo-equilibrium detection, and acquisition centre frequency is 750MHz, and bandwidth is
The subchannel 2 and subchannel 5 of 500MHz, and the two channels mirror image each other.Each road exported after balance detection mirror image each other
Intermediate-freuqncy signal into can a step pass through corresponding electric coupler carry out mirror image inhibit and each subchannels output.
Main technical content of the present invention is to propose a kind of system and method for the broad-band multipath channelizing based on optical frequency shift.It should
Method is not necessarily to light comb signal generator, narrow-band optical filter and channel selection filter, as long as all electrooptic modulators is made to work
In minimum transfer point, you can the channel for completing broadband signal by single-frequency laser combination optical frequency shift divides, and passes through I/Q down coversion knots
Occlusal equilibration detection realizes that the several two-ways of mirror image are exported with intermediate-freuqncy signal each other, had both avoided conventional channelization and has received the light filter faced
The disadvantage of the outer rejection ability difference of wavestrip in turn avoids realizing that the relevant light comb of high quality is realized multiple in Digital Channelized Receiving based on frequency comb
Miscellaneous disadvantage.
Specific implementation mode one is the system of the broad-band multipath channelizing based on optical frequency shift, as shown in Figure 1, including light source,
Optical branching device, radio-frequency modulations module, local oscillator modulation module, wideband filtered module, optical frequency shift component, I/Q down conversion components peace
Weigh probe assembly composition.Wherein, the optical frequency shift component is made of the DPMZM of three parallel arrangeds, and each DPMZM includes uplink
MZM, downlink MZM and MAIN MUX；The uplink MZM and downlink MZM of the DPMZM realize the Electro-optical Modulation of excitation electric signal, institute
State the MAIN MUX control uplink MZM output of DPMZM optical signal be added or subtract each other with the downlink MZM optical signals exported after, by
DPMZM light output ends export；The radio-frequency modulations and local oscillator modulation believe the wide band radio-frequency of input using IM Electro-optical Modulations effect
Number and electric local oscillator input signals carry out Electro-optical Modulation.
Light source output end is connected with optical branching device input terminal, an output end and the radio-frequency modulations module of optical branching device
Light input end is connected, and the rf inputs of radio-frequency modulations module receive the broadband rf signal of input, radio-frequency modulations module
Light output end is connected with wideband filtered input terminal, an input terminal phase of wideband filtered module output end and I/Q down conversion components
Even；Another output end of optical branching device is connected with the input terminal of local oscillator modulation module, the radio frequency input of local oscillator modulation module
End receives electric local oscillator input signals, and the light output end of local oscillator modulation module is connected with the input terminal of optical frequency shift component, optical frequency shift
The output end of component is connected with another input terminal of I/Q down conversion components, and output end and the balance of I/Q down conversion components are visited
The input terminal for surveying component is connected, and the output end of I/Q down conversion components is connected with the input terminal of balance detection component.
Specific implementation mode is second is that radio-frequency modulations, local oscillator modulation, wideband filtered and optical frequency shift, as shown in Figure 2.The system packet
Include light source, optical branching device, radio-frequency modulations module, local oscillator modulation module, wideband filtered module, optical branching 1, optical branching 2 and optical frequency
Move several parts of component.Wherein optical frequency shift component includes first via optical frequency shift, the second tunnel optical frequency shift and third road optical frequency shift.Specific step
Suddenly it is：
Step 1：According to fig. 2, the continuous optical signal of light source output is divided into two-way through optical branching device and send to radio-frequency modulations and this
Shake the light input end of modulation, and the broadband rf signal of radio frequency source output is loaded onto radio-frequency modulations, and the electric local oscillator of radio frequency source output is defeated
Enter signal loading to local oscillator to modulate, radio-frequency modulations and local oscillator modulation are arranged at minimum transfer point, such radio-frequency modulations and local oscillator
Light carrier is not included in modulation output optical signal.Radio-frequency modulations output radio frequency optical signal filters out upper side band through wideband filtered, obtains
Corresponding positive sideband optical signal, the sideband generate three upper side bands (RF) through tri- tunnels 1 Gong Fen of optical branching again.
According to described above, it is ω that radio frequency source, which sends out frequency,RFRadiofrequency signal send to radio-frequency modulations module, radiofrequency signal
Expression formula is VRF(t)=VRFsin(ωRFT), as shown in Fig. 3 (1).The light field of the continuous optical signal of light source output is Ein(t)=
E0exp(jωct).Radio-frequency modulations are operated in smallest point, i.e. power control circuit output numerical value is the voltage of modulator half-wave voltage
It is loaded onto in radio-frequency modulations, in this way, the light field expression formula of radio-frequency modulations output modulated optical signal is：
From formula (1) as can be seen that even-order signal all in output optical signal is eliminated, and work as m<When 1, three ranks
Signal is inhibited significantly.It is the optical signal that even-order inhibits to export optical signal.The signal of its radio frequency spectrum is as shown in Fig. 3 (2).It penetrates
Converting modulator output signal filters out upper side band by broadband filter, obtains corresponding positive sideband radio-frequency modulations optical signal.It is exported
Shown in spectrum such as Fig. 3 (3).Its expression formula is respectively：
Step 2：According to fig. 2, the local oscillator optical signal of local oscillator modulation output is sent behind tri- tunnels 2 Gong Fen of optical branching to optical frequency shift
Corresponding optical frequency shift is carried out in component, which increases Dare modulator by the double parallel Mach of three parallel arrangeds
(DPMZM1, DPMZM2 and DPMZM3) is formed, the second tunnel frequency displacement of the first via optical frequency shift of realization -500MHz ,+500MHz respectively
The third road frequency displacement for being zero with frequency displacement.Each DPMZM in optical frequency shift component is arranged at minimum operating point, and in each DPMZM
Between uplink MZM and downlink MZM radiofrequency signal output difference be 90 degree ,+90 degree and 0 so that each DPMZM output accordingly
Single order single-side belt carrier wave inhibits optical signal, and the exciting signal frequency that each DPMZM is arranged is 500MHz, 500MHz and 0, in light
Domain obtains the first via, the second road and third road optical frequency shifting signal.
According to described above, it is ω that radio frequency source, which sends out frequency,LOElectric local oscillator input signals send to local oscillator and modulate, electric local oscillator is defeated
It is V to enter signal expressionLO(t)=VLOsin(ωLOT), as shown in Fig. 3 (5).The light field of the continuous optical signal of light source output is Ein
(t)=E0exp(jωct).Local oscillator modulation is operated in smallest point, i.e. power control circuit output numerical value is modulator half-wave voltage
Voltage simultaneously be loaded onto local oscillator modulation on, in this way,
Local oscillator modulator output modulated optical signal light field expression formula be：
From formula (3) as can be seen that even-order signal all in output optical signal is eliminated, and work as m<When 1, three ranks
Signal is inhibited significantly.It is the optical signal that even-order inhibits to export optical signal.The signal of its this vibrational spectrum is as shown in Fig. 3 (6).Letter
It is Δ f that number source, which sends out frequency,1、Δf2With Δ f3Pumping signal send to DPMZM1, DPMZM2 and DPMZM3, DPMZM1, DPMZM2
It is operated in smallest point with DPMZM3, i.e. power control circuit output numerical value is that the voltage of modulator half-wave voltage is loaded onto simultaneously
On DPMZM1, DPMZM2 and DPMZM3, the expression formula of pumping signal is V (t)=Vsin ωΔfnT (n=1,2,3).Introduce electromigration
Phase device makes in each DPMZM between uplink MZM and downlink MZM radiofrequency signal output difference be 90 degree, -90 spend and 0, each in this way
DPMZM exports corresponding optical frequency shifting signal, as shown in Fig. 3 (7) to Fig. 3 (9).DPMZM1, DPMZM2 and DPMZM3 output modulation
The light field expression formula of optical signal is：
From formula (4) as can be seen that only including single-side belt odd-order signal in output optical signal, and work as m<When 1, three rank signals
It is suppressed significantly, output signal is the single sideband singal of single order optical carrier suppression.As Δ f1=-Δ f2=-500MHz, Δ f3=0
When, the optical frequency shift that frequency shift amount is 500MHz can be completed.
When electric local oscillator input signals frequency is 18GHz, such as according to the local oscillator modulation output spectrum obtained shown in the present invention
Shown in Fig. 4, output spectrum of the local oscillator modulation output after+500MHz frequency displacements is as shown in figure 5, local oscillator modulation output warp -500MHz
Output spectrum after frequency displacement is as shown in Figure 6.It can be seen from the figure that using raw in the local oscillator modulated optical signal of the invention generated
As the double-sideband signal that carrier wave inhibits, inhibit than being better than 20dB, the signal exported after optical frequency shift is single order optical carrier suppression
Single sideband singal, modulate output optical signal difference shift frequency+500MHz and -500MHz, and the side of the signal relative to local oscillator
Band inhibits ratio close to 30dB.
Generation of three multichannel of specific implementation mode with intermediate-freuqncy signal.As shown in Figure 2.The system includes I/Q down conversion components
With balance probe assembly two parts.Wherein I/Q down conversion components include I/Q down coversions 1, I/Q down coversions 2 and I/Q down coversions 3,
Balance detection component includes balance detection 1, balance detection 2, balance detection 3, balance detection 4, balance detection 5 and balance detection 6.
Method is as follows：
Step 1：According to fig. 2, when input radio frequency signal is 3GHz wide-band microwave signals, if wanting, obtaining bandwidth is
500MHz, centre frequency are the intermediate-freuqncy signal of 750MHz.When the pumping signal of first via optical frequency shift is -500MHz, by the first via
Optical frequency shift output upper side band signal (shown in such as Fig. 3 (12)) and the RF signals exported after wideband filtered (shown in such as Fig. 3 (11))
It is sent together to I/Q down coversions 1 and generates four road coupled signals, 1 phase difference output of I/Q down coversions is respectively the same phase of 0 degree and 180 degree
Signal, spectrum signal is as shown in Fig. 3 (13) and Fig. 3 (14).And phase difference is respectively the orthogonal signalling of 90 degree and -90 degree,
The signal of its spectrum is as shown in Fig. 3 (15) and Fig. 3 (16).The in-phase signal is sent to balance detection 1, which send to balance and visit
2 are surveyed, 1 channel of mirror image each other and 4 channel intermediate-freuqncy signals are obtained after corresponding balance detection, further realizes 1 letter by being electrically coupled
The separation in road and 4 channels, electricity spectrum signal is as shown in Fig. 3 (17) and Fig. 3 (18).
Step 2：According to fig. 2, when input radio frequency signal is 3GHz wide-band microwave signals, if wanting, obtaining bandwidth is
500MHz, centre frequency are the intermediate-freuqncy signal of 750MHz.When the pumping signal of second tunnel optical frequency shift is 500MHz, by the second road light
Frequency displacement output upper side band signal send to I/Q down coversions 2 together with the RF signals exported after wideband filtered and generates four tunnels coupling letter
Number, 2 phase difference output of I/Q down coversions is respectively that the in-phase signal and phase difference of 0 degree and 180 degree are respectively 90 degree and -90 degree
Orthogonal signalling, which send to balance detection 3, which send to balance detection 4, is obtained after corresponding balance detection
3 channel of mirror image each other and 6 channel intermediate-freuqncy signals are taken, the separation of 3 channels and 6 channels is further realized by being electrically coupled.
Step 3：According to fig. 2, when input radio frequency signal is 3GHz wide-band microwave signals, if wanting, obtaining bandwidth is
500MHz, centre frequency are the intermediate-freuqncy signal of 750MHz.When the pumping signal of third road optical frequency shift is 0, by third road optical frequency shift
Output upper side band signal, which is sent together with the RF signals exported after wideband filtered to I/Q down coversions 3, generates four road coupled signals, I/
3 phase difference output of Q down coversions be respectively the in-phase signal and phase difference of 0 degree and 180 degree be respectively 90 degree and -90 degree just
Signal, the in-phase signal is handed over to send to balance detection 1, which send to balance detection 2, is obtained after corresponding balance detection mutual
For 2 channel of mirror image and 5 channel intermediate-freuqncy signals, the separation of 2 channels and 5 channels is further realized by being electrically coupled.
It is 16.5GHz-19.5GHz when input broadband rf signal frequency range is microwave signal frequency, electric local oscillator input
Signal frequency is 18GHz.According to the same intermediate frequency frequency conversion output signal inband flatness test result such as Fig. 7 obtained shown in the present invention
Shown, according to the same intermediate frequency frequency conversion output signal image rejection ratio obtained shown in the present invention, test results are shown in figure 8.From figure
As can be seen that its inband flatness is better than 0.5dB, image rejection ratio is better than 23dB.
Claims (10)
1. a kind of broad-band multipath channelizing system based on optical frequency shift, it is characterised in that：The system include light source, optical branching device,
Radio-frequency modulations module, local oscillator modulation module, wideband filtered module, optical frequency shift component, I/Q down conversion components and balance detection group
Part；
The light source is for exporting continuous optical signal；
The optical branching device is used to carry out branch process to the optical signal received；
The radio-frequency modulations module is sent for output optical signal after being modulated to the broadband rf signal received to broadband
Filter module；
The local oscillator modulation module is sent for output optical signal after being modulated to the electric local oscillator input signals received to light
Frequency displacement component；
The wideband filtered module after being filtered out to the optical signal received for sending to I/Q down conversion components；
After the optical frequency shift component is used to carry out shift frequency and filtering to the optical signal received, send to I/Q down conversion components；
The I/Q down conversion components are used to carry out channel division and mixing to the optical signal received, obtain photomixing signal,
And obtained photomixing signal is sent to balance detection component；
Balance detection component is used to be corresponding electric signal to the photomixing signals revivification received, and frequency subchannel is believed in output
Number.
2. a kind of broad-band multipath channelizing system based on optical frequency shift according to claim 1, it is characterised in that：Light source is defeated
Outlet is connected with optical branching device input terminal, and an output end of optical branching device is connected with the light input end of radio-frequency modulations module
It connects, the rf inputs of radio-frequency modulations module receive the broadband rf signal of input, light output end and the width of radio-frequency modulations module
Band filter module input terminal is connected, and wideband filtered module output end is connected with the input terminal of I/Q down conversion components；Optical branching device
Another output end is connected with the input terminal of local oscillator modulation module, and the electric local oscillator of rf inputs reception of local oscillator modulation module is defeated
Enter signal, the light output end of local oscillator modulation module is connected with the input terminal of optical frequency shift component, the output end of optical frequency shift component with
The input terminal of I/Q down conversion components is connected, and the output end of I/Q down conversion components is connected with the input terminal of balance detection component
Connect, the output end of I/Q down conversion components is connected with the input terminal of balance detection component, the output end of I/Q down conversion components with
The input terminal of balance detection component is connected, and the output end of I/Q down conversion components is connected with the input terminal of balance detection component.
3. a kind of broad-band multipath channelizing system based on optical frequency shift according to claim 1, it is characterised in that：Described
Radio-frequency modulations module is realized that radio-frequency modulations module includes that 5, rf inputs 6 of a light input end and a light are defeated by IM
Outlet 7；
The light input end 5 of radio-frequency modulations module is connected with a light output end 3 of optical branching device, the radio frequency of radio-frequency modulations module
Input terminal 6 receives the broadband rf signal of radio frequency source output, the light of the light output end 7 and wideband filtered module of radio-frequency modulations module
Input terminal 8 is connected；
The continuous optical signal of light source output is divided into two branches, upper branch optical signal up and down and send to radio-frequency modulations after optical branching device
The light input end 5 of module, radio frequency source output broadband rf signal are sent to the rf inputs 6 of radio-frequency modulations module；The IM
On have driving electrodes, have driving voltage that IM is made to be operated in minimum transfer point in the driving electrodes.
4. a kind of broad-band multipath channelizing system based on optical frequency shift according to claim 1, it is characterised in that：Local oscillator tune
Molding block is realized that local oscillator modulation module includes 9, rf inputs 10 of a light input end and a light output end by IM
11；The light input end 9 of local oscillator modulation module is connected with a light output end 4 of optical branching device, the radio frequency of local oscillator modulation module
Input terminal 10 receives the electric local oscillator input signals of radio frequency source output, light output end 11 and the optical frequency shift component of local oscillator modulation module
Light input end 12 is connected；
The continuous optical signal of light source output is divided into two branches up and down after optical branching device, and lower branch optical signal send to local oscillator and modulates
The light input end 9 of module, the electric local oscillator input signals of radio frequency source output are sent to the rf inputs 10 of local oscillator modulation module；Local oscillator tune
There are driving electrodes on molding block, has driving voltage that IM is made to be operated in minimum transfer point in the driving electrodes.
5. a kind of broad-band multipath channelizing system based on optical frequency shift according to claim 1, it is characterised in that：It filters in broadband
Wave module is realized that wideband filtered module includes a light input end 8 and a light output end 13, broadband filter by broadband optical filter
The light input end 8 of wave module is connected with the light output end 7 of radio-frequency modulations module, the light output end 13 and I/ of wideband filtered module
The light output end 15 of Q down conversion components is connected；
After the optical signal left and right side band separation that wideband filtered module exports the radio-frequency modulations module received, obtain on corresponding
Sideband radio-frequency modulations optical signal.
6. a kind of broad-band multipath channelizing system based on optical frequency shift according to claim 1, it is characterised in that：Optical frequency shift
By double parallel Mach-increasing Dare modulator (DPMZM), superposition realizes that each DPMZM includes uplink Mach-increasing moral to component parallel
That modulator (MZM), downlink Mach-increasing Dare modulator (MZM) and MAIN MUX；
The uplink MZM and downlink MZM is utilized respectively single MZM Electro-optical Modulations effect and carries out Electro-optical Modulation；
After the optical signal of the MAIN MUX control uplink MZM outputs is added or subtracts each other with the downlink MZM optical signals exported, by
DPMZM light output ends 14 are sent to I/Q down conversion components.
7. a kind of broad-band multipath channelizing system based on optical frequency shift according to claim 6, it is characterised in that：Signal source
Output drive signal work(is divided into two-way, is loaded onto DPMZM uplink MZM all the way, and another way is loaded onto DPMZM after 90 degree of electromigration phases
Downlink MZM so that phase difference is 90 degree between being loaded into the pumping signal of DPMZM rf inputs；The MZM work of DPMZM uplinks
In minimum direct current bias point so that uplink MZM is operated in carrier suppressed modulation mode；DPMZM downlinks MZM is operated in minimum direct current
Bias point so that downlink MZM is operated in carrier suppressed modulation mode；The MAIN MUX of DPMZM is operated in orthogonal points so that
It is the difference that uplink MZM exports that optical signal exports optical signal with downlink MZM that DPMZM, which exports optical signal, such DPMZM outgoing carriers suppression
The negative one rank single sideband signals of system；When phase difference is spent for -90 between being loaded onto the pumping signal of DPMZM rf inputs,
The positive single order single sideband signals that DPMZM outgoing carriers inhibit.
8. a kind of broad-band multipath channelizing system based on optical frequency shift according to claim 1, it is characterised in that：Under I/Q
Frequency conversion component is realized by 90 degree of optical mixer units, including two light input ends, 15,16 and four light output ends 17,19,21,23, I/Q
One light input end 15 of down conversion components is connected with the light output end 13 of wideband filtered module, I/Q down conversion components it is another
One light input end 16 is connected with the light output end 14 of optical frequency shift component；I/Q down coversions light output end 17,19,21,23 with it is flat
The input terminal 18,20,22,24 of weighing apparatus probe assembly is connected.
9. a kind of broad-band multipath channelizing system based on optical frequency shift according to claim 1, it is characterised in that：Optical frequency shift
The optical signal of component output and the optical signal of wideband filtered module output are sent together to I/Q down conversion components, I/Q down coversion groups
Part generates four tunnels coupling optical signal, the four tunnels coupling of I/Q down conversion components output after carrying out photomixing to the optical signal received
Have in optical signal two-way be phase difference be respectively 0 degree and 180 degree in-phase signal, have two-way be phase difference be respectively 90 degree and-
90 degree of orthogonal signalling；Wherein in-phase signal balances probe assembly by the output of light output end 17 and 19 of I/Q down conversion components
Input terminal 18 and 20, orthogonal signalling export by I/Q down coversions light output end 21 and 23 and balance the input terminal 22 of probe assembly
With 24；
Four tunnels that balance detection component receives the output of I/Q down conversion components couple optical signal, and balance detection component is to receiving
Four tunnels coupling optical signal carries out the opto-electronic conversion based on square law detecting way, obtains corresponding electric intermediate-freuqncy signal.
10. a kind of method of the broad-band multipath channelizing based on optical frequency shift, it is characterised in that：This method input radio frequency signal is 3
The wide-band microwave signal of Δ f, output bandwidth are Δ f, the identical six tunnels intermediate-freuqncy signal of centre frequency；
The step of this method includes：
(1) the continuous optical signal of light source output is divided into two branches up and down after optical branching device, is respectively loaded on radio-frequency modulations module
With the light input end of local oscillator modulation module；
(2) radio frequency source output broadband rf signal is loaded onto the rf inputs of radio-frequency modulations module, passes through state modulator so that
Radio-frequency modulations module is operated in minimum transfer point, and radio-frequency modulations module exports the double-sideband signal of optical carrier suppression, send to broadband
Filter module；
(3) wideband filtered module filter out radio-frequency modulations output optical signal upper side band after send to a light of I/Q down conversion components
Input terminal；
(4) rf inputs that the electric local oscillator input signals of radio frequency source output are loaded onto local oscillator modulation module are made by state modulator
It obtains local oscillator modulation module and is operated in minimum transfer point, local oscillator modulation module exports the double-sideband signal of optical carrier suppression, send to light
Frequency displacement component；
(5) optical frequency shift component includes first via optical frequency shift device, the second tunnel optical frequency shift device and third road optical frequency shift device, per optical frequency all the way
Moving device utilizes DPMZM to realize；When the pumping signal that DPMZM radio-frequency head loading frequencies are Δ f, DPMZM exports optical carrier suppression
Negative one rank single sideband singal when, realize that frequency is the-first via optical frequency shift of Δ f；When DPMZM radio-frequency heads load Δ f excitation letters
Number, when DPMZM exports the positive single order single sideband singal of optical carrier suppression, realize that frequency is the second tunnel optical frequency shift of Δ f；When
When DPMZM radio-frequency heads are empty, realize that frequency is 0 third road optical frequency shift；
(6) optical signal of optical frequency shift component output is sent together with the optical signal that wideband filtered module exports to I/Q down conversion components
Four road coupled signals are generated, I/Q down conversion components phase difference outputs are respectively the in-phase signal and phase difference of 0 degree and 180 degree
The respectively 90 degree orthogonal signalling spent with -90；
(7) I/Q down conversion components in-phase signal and orthogonal signalling are sent to balance detection component, are obtained after balance detection respectively mutual
For mirror image, bandwidth is the two-way intermediate-freuqncy signal of Δ f；
(8) first via light frequency-shift signaling of optical frequency shift component output obtains mutually after I/Q down conversion components and balance probe assembly
For 1 channel and 4 channel intermediate-freuqncy signals of mirror image；Second road light frequency-shift signaling of optical frequency shift component output is through I/Q down conversion components
After balance probe assembly, 3 channels and 6 channel intermediate-freuqncy signals of mirror image each other are obtained；The third road light of optical frequency shift component output
Frequency-shift signaling obtains 2 channels and 5 channel intermediate-freuqncy signals of mirror image each other after I/Q down conversion components and balance probe assembly；Institute
Some intermediate-freuqncy signal bandwidth are Δ f, and centre frequency is identical.
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| CN112134624A (en) * | 2019-06-24 | 2020-12-25 | 西安电子科技大学 | Efficient microwave photon channelized receiving method |
| CN110572215A (en) * | 2019-09-19 | 2019-12-13 | 南京航空航天大学 | Photon-assisted radio frequency signal receiving method and device and simultaneous same-frequency full duplex system |
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| CN112165361A (en) * | 2020-09-29 | 2021-01-01 | 中国船舶重工集团公司第七二四研究所 | Optical channelization device and method with tunable frequency range |
| CN112422179B (en) * | 2020-10-22 | 2022-02-01 | 西安空间无线电技术研究所 | Reconfigurable optical channel flexible extraction system and method based on comb switching |
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| CN113992275A (en) * | 2021-11-15 | 2022-01-28 | 浙江大学 | Broadband signal receiving method and device based on optical sub-channelized sampling |
| CN114430298A (en) * | 2021-11-25 | 2022-05-03 | 中国科学院西安光学精密机械研究所 | Multi-system compatible space laser communication method and system based on direct modulation |
| CN114430298B (en) * | 2021-11-25 | 2024-01-30 | 中国科学院西安光学精密机械研究所 | Multi-standard compatible space laser communication method and system based on direct modulation |
| CN115225154A (en) * | 2022-07-19 | 2022-10-21 | 中国电子科技集团公司第四十四研究所 | Photon integrated chip and ultra-wideband radio frequency photon receiving and transmitting device |
| CN115225154B (en) * | 2022-07-19 | 2023-07-21 | 中国电子科技集团公司第四十四研究所 | Photon integrated chip and ultra-wideband radio frequency photon receiving and transmitting device |
| CN115913370A (en) * | 2022-09-29 | 2023-04-04 | 西安空间无线电技术研究所 | Multi-chip hybrid integrated satellite-borne array type microwave photon frequency converter |
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| CN115765882B (en) * | 2022-10-26 | 2024-05-31 | 西安空间无线电技术研究所 | Microwave photon channelized receiving device and method based on cascade connection of acousto-optic frequency shifters |
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