CN107124229A - A kind of any time-delay mechanism of radiofrequency signal and method that frequency displacement is circulated based on microwave photon - Google Patents
A kind of any time-delay mechanism of radiofrequency signal and method that frequency displacement is circulated based on microwave photon Download PDFInfo
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- CN107124229A CN107124229A CN201710206701.4A CN201710206701A CN107124229A CN 107124229 A CN107124229 A CN 107124229A CN 201710206701 A CN201710206701 A CN 201710206701A CN 107124229 A CN107124229 A CN 107124229A
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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
- H04B10/516—Details of coding or modulation
- H04B10/54—Intensity modulation
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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
- H04B10/516—Details of coding or modulation
- H04B10/548—Phase or frequency modulation
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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
- H04B10/70—Photonic quantum communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
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Abstract
The invention discloses a kind of any time-delay mechanism of radiofrequency signal and method that frequency displacement is circulated based on microwave photon, the invention is related to technical field of photo communication, microwave technical field and ECM field, is mainly used in the storage of radiofrequency signal in electronic countermeasure radar jamming system.Methods described as shown in drawings, including light source 1, Polarization Controller 2, phase-modulator 3, optical band pass filter 4,2x2 photo-couplers 5, radio frequency source 6,90 ° of radio frequency orthogonal couplers 7, double parallel MZ Mach-Zehnder 8, standard single-mode fiber 9, erbium-doped fiber amplifier 10, wavelength division multiplexer 11, optical switch matrix 12, adjustable delay module 13 and photodetector 14.Radiofrequency signal is received using phase-modulator.Using optical fiber loop and with reference to double parallel MZ Mach-Zehnder, frequency displacement delay is carried out to signal.By wavelength division multiplexer and switch matrix, and adjustable delay module is combined, finally realize the delay storage of radiofrequency signal random time.
Description
Technical field
The present invention relates to technical field of photo communication, microwave technical field and ECM field, profit is related generally to
The storage that the reception of radiofrequency signal is realized with Photonics Technology and is arbitrarily delayed.
Background technology
In modern war, opposing sides can be done with specific electronic countermeasures means to the electronic equipment of enemy
Disturb.In modern radar system, by receiver all matches with launched radar signal waveform, Anti-jamming Ability for Radar all compared with
By force, traditional interference method can not meet demand.Therefore, it is necessary to which it is made quickly instead for radar jamming system
Should, to reach the interference effect to enemy radar, so not requiring nothing more than interference signal and the height of enemy radar signal that it sends
Degree matching, also requires that its response is rapid.It is the modern thunder of interference based on the gate stealing that radio frequency is stored to grow up later
Up to there is provided effective measures, by accurately replicating radar waveform, using deception/covering modulation system the time, space,
Optimum jamming is implemented to enemy radar in terms of several Modulation Types of frequency.
Digital RF memory technology is suggested in the seventies in last century, as the demand of electronic warfare cheating interference technology is obtained
Rapidly development, and be widely used in radar electronic warfare field.Digital RF memory technology is carried out to the radar signal received
High-speed sampling, storage, conversion process and duplication, realize signal capture and the high speed, the diversity of perturbation technique and the control that preserve
The flexibility of system.But for digital storage technique, it is desirable to higher signal fidelity is obtained, then requires that ADC processing has
Higher dynamic range.But ADC sample rate and bandwidth of operation are limited, and the data of magnanimity it is also proposed to signal transacting
Higher requirement, therefore limit the operating frequency range of digital RF memory technology.
In recent years, microwave photon technology gradually grew up, have that instant bandwidth is big, working frequency range is wide due to photonic propulsion,
The series of advantages such as isolation is big, electromagnetism interference are realized for the storage of radiofrequency signal provides a new solution, is based on
The radiofrequency signal memory technology of photonic propulsion turns into the focus studied in recent years.Using Photonics Technology, make that down coversion need not be carried out
And analog-to-digital conversion is that the high fidelity storage that radiofrequency signal can be achieved is possibly realized.
The scheme for the photon radio-frequency signal storage reported at present is broadly divided into two major classes, and a class is based on fiber delay line
The photon radio-frequency storage scheme of group and switching switch a, class is the photon radio-frequency storage scheme that delay is circulated based on fiber optic loop.
In the first scheme, although can select the different storage times of radiofrequency signal, but need substantial amounts of optical fiber and light-operated open
Close, every delay line can only carry out a time-lag action, in the structure that multiple photoswitches and fiber delay line are cascaded, Insertion Loss compared with
Greatly, and the program require photoswitch have higher switch speed and relatively low crosstalk, with avoid influence storage signal guarantor
True degree.In second scheme, it is not necessary to substantial amounts of photoswitch and optical fiber, realize that radio frequency is believed by the circulation delay of fiber optic loop
Number delay storage.But, the program is respectively necessary for a photoswitch in input and output end and synchronized, it is impossible to realize
The input of continuous time signal stores and can not handle the radar pulse signal of high duty ratio, can only realize prolonging for special time
When store, do not possess random time delay storage flexibility.
The content of the invention
The problem of in order to solve in the presence of technical background, the present invention propose it is a kind of using frequency spectrum shift and light filter come
Realize the photonic propulsion storage method of radiofrequency signal.This method is without a large amount of optical fiber, you can realize that the long period of radiofrequency signal prolongs
When store, and input and output end do not need clock just can synchronously realize the delay storage of different time, and structure is relatively simple
Single and easily realization.
Carrier-suppressed SSB modulation is carried out to the signal for being input to fiber optic loop using double parallel MZ Mach-Zehnder,
The frequency spectrum shift of storage signal is realized so that the signal of the different number of turns of circulation, in different frequency ranges, it is therefore prevented that be subsequently input to
Interference of the signal to existing signal in first front ring in loop.Optical filter, anti-stop signal Infinite Cyclic are added in fiber optic loop
Cause signal power in ring excessive.Wavelength division multiplexer, optical switch matrix and adjustable delay module are used at structure output end, is led to
Cross the signal of selection different frequency sections and adjust the delay of time delay module, realize any delay storage of signal.
The technical solution adopted for the present invention to solve the technical problems is：Described device include light source 1, Polarization Controller 2,
Phase-modulator 3, optical band pass filter 4,2x2 photo-couplers 5, radio frequency source 6,90 ° of radio frequency orthogonal couplers 7, double parallel Mach
Zeng Deer modulators 8, standard single-mode fiber 9, erbium-doped fiber amplifier 10, wavelength division multiplexer 11, optical switch matrix 12, adjustable prolong
When module 13 and photodetector 14.The output end of light source is connected with Polarization Controller, Polarization Controller and phase-modulator
Input connection.Radiofrequency signal is carried in the rf inputs of phase-modulator, and output end and the light belt of phase-modulator lead to
Wave filter is connected, and filter output is connected with an input of 2x2 photo-couplers.One output end of 2x2 photo-couplers
It is connected with Polarization Controller, then input of the Polarization Controller again with double parallel horse once modulator is connected.Radio frequency source is penetrated with 90 °
The input of frequency orthocoupler is connected, and the output end connection double parallel mach zhender of 90 ° of radio frequency orthogonal couplers is adjusted
One rf inputs of device processed.Another output end of 90 ° of radio frequency orthogonal couplers and double parallel MZ Mach-Zehnder
Another rf inputs be connected.The output end of double parallel MZ Mach-Zehnder is connected with optical fiber, then optical fiber output
End is connected with optical band pass filter.The output end of optical band pass filter is connected with the input of erbium-doped fiber amplifier, er-doped light
The output end of fiber amplifier is connected with another input of 2x2 photo-couplers.Another output end and ripple of 2x2 photo-couplers
Division multiplexer is connected, and the output end of wavelength division multiplexer is connected with optical switch matrix, output end and the adjustable delay mould of switch matrix
Block is connected, and last adjustable delay module is connected with photodetector.The output end of photodetector can connect spectrum analyzer with adopting
Sample oscillograph is tested.
Wherein double parallel MZ Mach-Zehnder is by two parallel sub- MZ Mach-Zehnder MZMa, MZMb and individual
Main MZ Mach-Zehnder MZMc is constituted；
The sub- modulator of above-mentioned double parallel MZ Mach-Zehnder has identical 26S Proteasome Structure and Function.Sub- modulator has
Independent RF signal input end mouthful and offset port；Main offset port can be for adjusting the output of sub- modulator.
The present invention operationally comprises the following steps：
(1) sent from light source during the light carrier that wavelength is is input to phase-modulator by Polarization Controller；
(2) radiofrequency signal RF is input to the rf inputs mouthful of phase-modulator.
(3) phase modulated signal of phase-modulator output passes through an optical band pass filter, realizes single sideband modulation mode.
(4) single sideband modulated signal is obtained from the output end of optical band pass filter, and inputs a signal into the one of 2x2 photo-couplers
Individual input a.
(5) single sideband modulated signal inputted from coupler input a, through coupler 1：After 1 branch, a part is in 2x2 optocouplers
The output end b outputs of clutch a, part through Polarization Controller is input to double parallel horse in output end d outputs from the d signals exported
Conspicuous Zeng Deer modulators.
(6) radio frequency source output local oscillation signal is input in 90 ° of radio frequency orthogonal couplers, and 90 ° of radio frequency orthogonal couplers one are defeated
Go out the rf inputs mouthful that end is directly connected to the MZMa of double parallel MZ Mach-Zehnder, by 90 ° of radio frequency orthogonal couplers
Another output end and the MZMb of double parallel MZ Mach-Zehnder rf inputs mouthful be connected
(7) it is V by amplitude in double parallel MZ Mach-ZehnderDCaDC voltage be linked into MZMa direct current input
End, amplitude is VDCbDC voltage be linked into MZMb direct-flow input end, amplitude is VDCcDC voltage be linked into MZMc's
Direct-flow input end.V is setDCa、VDCb、VDCcSize, make double parallel MZ Mach-Zehnder in carrier-suppressed SSB adjust
Mode processed, and then the frequency shifts for the double sideband modulation signal for being input to double parallel MZ Mach-Zehnder are realized, frequency is moved
Dynamic size is equal to local oscillation signal frequency.
(8) frequency shift signal exported from double parallel MZ Mach-Zehnder passes through a segment mark quasi-monomode fiber, passes through in a fiber
After being delayed after a while, frequency shift signal is input to an optical band pass filter.
(9) signal exported from light worry ripple device, via an erbium-doped fiber amplifier, power amplification is carried out to frequency shift signal.
(10) frequency shift signal exported from erbium-doped fiber amplifier, is input to another input c of 2x2 photo-couplers, from c ends
The signal of input, after coupler branch, a part is output to b ports, and from d ports, output enters fiber optic loop to another part,
Continue frequency displacement and delay.
(11) at 2x2 coupler output ports b, a part is the original single sideband modulated signal being delayed without frequency displacement, another
Part is the single sideband modulated signal after fiber optic loop frequency displacement delay.The signal exported from b ports is input to a wavelength-division
In multiplexer.
(12) multi-channel output of wavelength division multiplexer is connected with an optical switch matrix, by optical switch matrix, selects a certain frequency range
Signal, the i.e. specific number of turns of selection circulation signal.
(13) signal of switch matrix output is connected with adjustable delay module, can be in light by adjusting the delay of time delay module
Further fine-tuned on the basis of fine loop delay.Eventually pass and primary signal is recovered after photodetector finally realize
The random time delay storage of radiofrequency signal.
The present invention proposes a kind of new any time-delay mechanism of radiofrequency signal and side that frequency displacement is circulated based on microwave photon
Method, the modulation of radiofrequency signal is realized using phase-modulation and light filtering.Modulated using fiber optic loop and double parallel mach zhender
Device, realizes circulation delay and the frequency spectrum shift of signal.Using wavelength division multiplexer and optical switch matrix, the different delayed time time is realized
The selection of (the circulation number of turns) signal.Using adjustable delay module, on the basis of circulation delay, when can be achieved further fine
Prolong adjustment, finally realize the random time delay storage of signal.Eventually pass photodetector and carry out opto-electronic conversion, recover and deposit
The radiofrequency signal of storage.
This programme does not need a large amount of fiber delay lines, simple in construction, reduces cost of implementation, and the insertion for reducing link is damaged
Consumption.Carrier-suppressed SSB modulation is carried out to the signal for being input to fiber optic loop using double parallel MZ Mach-Zehnder, realized
The frequency spectrum shift of signal is stored, so can both realize that the signal for circulating the different number of turns was in different frequency ranges, it is therefore prevented that follow-up defeated
Enter interference of the signal to existing signal in first front ring in fiber optic loop.Optical filter is added in fiber optic loop, anti-stop signal is unlimited
Circulation frequency displacement causes the signal power in ring excessive.
Brief description of the drawings
Fig. 1 is any time-delay mechanism schematic diagram of radiofrequency signal that frequency displacement is circulated based on microwave photon；
Fig. 2 is simulation result figure, wherein：
(a) the optical signal spectrum figure without delay is selected for optical switch matrix；
(b) it is the spectrum of radio frequency signals figure after opto-electronic conversion of the optical signal without delay；
(c) the optical signal spectrum figure of delay 10us (circulating 20 circles, frequency displacement 20 times) is selected for optical switch matrix；
(d) it is radio spectrum figure of delay 10us (circulating 20 circles, the frequency displacement 20 times) optical signal after opto-electronic conversion；
(e) the optical signal spectrum figure of delay 20us (circulating 40 circles, frequency displacement 40 times) is selected for optical switch matrix；
(f) it is radio spectrum figure of delay 20us (circulating 40 circles, the frequency displacement 40 times) optical signal after opto-electronic conversion；
Embodiment
Embodiments of the invention are elaborated below in conjunction with the accompanying drawings：The present embodiment using technical solution of the present invention before
Put and implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to down
The embodiment of category：
Fig. 1 is any time-delay mechanism schematic diagram of radiofrequency signal that frequency displacement is circulated based on microwave photon.Phase-modulator is used for
Radiofrequency signal to be stored is modulated, phase modulated signal filters the one of modulated signal by an optical band pass filter
Individual sideband, obtains single sideband modulated signal.Obtained modulated signal, enters fiber optic loop, with reference to double parallel after photo-coupler
MZ Mach-Zehnder carries out circulation frequency displacement and delay.Signal after delay frequency displacement is via wavelength division multiplexer and photoswitch square
Battle array, can obtain the signal of different delayed time time, and combine adjustable delay module, when carrying out further high-fineness to time delayed signal
Prolong after adjustment, realize the random time delay of signal.Eventually pass the radio frequency letter being delayed after photodetector opto-electronic conversion
Number.
As shown in figure 1, in the present embodiment, device includes：The logical filter of light source 1, Polarization Controller 2, phase-modulator 3, light belt
Ripple device 4,2x2 photo-couplers 5, radio frequency source 6,90 ° of radio frequency orthogonal couplers 7, double parallel MZ Mach-Zehnder 8, standard lists
Mode fiber 9, erbium-doped fiber amplifier 10, wavelength division multiplexer 11, optical switch matrix 12, adjustable delay module 13 and photodetection
Device 14.Wherein, double parallel MZ Mach-Zehnder is made up of two parallel sub- MZMa, MZMb and a main MZMc, such as
Shown in Fig. 1；The output end of light source is connected with Polarization Controller, the input connection of Polarization Controller and phase-modulator.Radio frequency
Signal loading is in the rf inputs of phase-modulator, and the output end of phase-modulator is connected with optical band pass filter, realizes light
Single sideband modulation.The output end of optical filter is connected with an input of 2x2 photo-couplers.One output of 2x2 photo-couplers
End is connected with Polarization Controller, and then input of the Polarization Controller again with double parallel horse once modulator is connected.Radio frequency source is exported
Local oscillation signal be connected with the input of 90 ° of radio frequency orthogonal couplers, 90 ° of radio frequency orthogonal couplers, one output end connection double flat
The MZMa of row MZ Mach-Zehnder rf inputs.Another output end and double parallel of 90 ° of radio frequency orthogonal couplers
The MZMb of MZ Mach-Zehnder rf inputs are connected.The output end of double parallel MZ Mach-Zehnder and optical fiber phase
Even, then fiber-optic output is connected with optical band pass filter.The output end of optical band pass filter and erbium-doped fiber amplifier it is defeated
Enter end to be connected, the output end of erbium-doped fiber amplifier is connected with another input of 2x2 photo-couplers.2x2 photo-couplers
Another output end is connected with wavelength division multiplexer, and the output end of wavelength division multiplexer is connected with optical switch matrix, switch matrix it is defeated
Go out end by an adjustable delay module with photodetector to be connected, the radio frequency letter of photodetector final output delay storage
Number.
In this example, following steps are specifically included：
Step one：It is 193.1THz that light source, which produces working frequency, and power is 10dBm continuous light wave, and the continuous light wave is used as load
Ripple is input to phase-modulator.
Step 2：Radio-frequency signal source output frequency is 5.9GHz and 6.1GHz two-tone signal, after phase modulator modulation
Signal, by a centre frequency be 193.103THz, with a width of 8GHz optical band pass filters, filter lower sideband signal, obtain
To single sideband modulated signal.
Step 3：The single sideband modulated signal of wave filter output is input to an input of 2x2 photo-couplers.
Step 4：During the signal exported from a port of 2x2 photo-couplers is input to double parallel MZ Mach-Zehnder.
Step 5：The frequency of the local oscillation signal of radio frequency source output is 10GHz, after 90 ° of radio frequency orthogonal couplers, an output
End is connected to the MZMa of double parallel MZ Mach-Zehnder rf inputs mouthful, and another output end is connected to double parallel horse
The MZMb of conspicuous Zeng Deer modulators rf inputs mouthful.
Step 6：By three Dc bias V for setting double parallel MZ Mach-ZehnderDCa、VDCb、VDCcSize so that
Double parallel MZ Mach-Zehnder is in carrier-suppressed SSB modulation system.Therefore, it is input to double parallel mach zhender
The double sideband modulation signal of modulator, can produce 10GHz frequency displacement in area of light.
Step 7：Single sideband modulated signal after frequency displacement is exported from the output end of double parallel MZ Mach-Zehnder to be entered
100m optical fiber carries out delay transport, and delay time is 0.5us.
Step 8：Signal after the frequency displacement that is delayed enters erbium-doped fiber amplifier, amplifier pair by optical band pass filter
Power attenuation signal after delay frequency displacement is carried out after 20dB amplification, is input to another input of 2x2 photo-couplers.
Step 9：Through the signal after delay and frequency displacement, fiber optic loop can be again introduced into and enter line delay frequency displacement.In 2x2 photo-couplers
Another output end, can obtain the primary signal without the frequency displacement that is delayed and the signal after delay frequency displacement.From its output
The signal of end output is input in wavelength division multiplexer, and the multiple-channel output of wavelength division multiplexer is connected with optical switch matrix, may be selected not
It is the signal of different delayed time with frequency range.
Step 10：The signal of optical switch matrix output can further adjust delay time, prolong again by an adjustable delay module
When after signal be input to photodetector carry out opto-electronic conversion, finally give the radiofrequency signal of storage.
Fig. 2 (a) is that optical switch matrix selects the optical signal spectrum figure without delay.Fig. 2 (b) is the optical signal without delay
The spectrum of radio frequency signals figure after opto-electronic conversion.The two-tone signal frequency inputted as can be seen from Figure be respectively 5.9GHz and
6.1GHz, the rejection ratio to third order intermodulation signal is 36dB.Fig. 2 (c), (e) are respectively that optical switch matrix selection delay 10us (is followed
Ring 20 is enclosed, frequency displacement 20 times), the optical signal spectrum figure after delay 20us (circle of circulation 40, frequency displacement 40 times), it can be seen that
The signal of different frequency range may be selected by optical switch matrix, you can realize the delay storage of selection different time.Because signal is every
Circulation one is enclosed, and be delayed 0.5us, frequency shifts 10GHz.And from this figure it can be seen that optical switch matrix selection is a certain specific
During frequency range, to the interference signal rejection ratios of other delay times up to more than 35dB.Fig. 2 (d), (f) are respectively that delay 10us (is followed
Ring 20 is enclosed, frequency displacement 20 times), the radio spectrum figure of delay 25us (circle of circulation 40, frequency displacement 40 times) optical signal after opto-electronic conversion.
It can be seen that the signal recovered after different delayed time, to the rejection ratio of noise signal up to 30dB, with compared with
High fidelity.Furthermore it is also possible to select the less photodetector of bandwidth or filtered after photodetector by electrical domain
The mode of ripple, further improves the fidelity of time delayed signal.
In this programme, the passband of the frequency range of handled radiofrequency signal and the frequency of local oscillation signal and wavelength division multiplexer
Interval is related to pass band width size.In this simulating, verifying, radio frequency source output local frequency is 10GHz, wavelength division multiplexer
Pass band width is 8GHz, and radio frequency two-tone signal is non-Wei not 5.9GHz and 6.1GHz., can be from different length using this programme
Optical fiber, the delay time of the circle of selection circulation one.Local oscillator from different frequency and different passband intervals and amount of bandwidth
Wavelength division multiplexer, change the scope of processing radiofrequency signal, with higher flexibility.
To sum up, the present invention proposes a kind of any time-delay mechanism of radiofrequency signal and side that frequency displacement is circulated based on microwave photon
Method.In scenario-frame, radiofrequency signal is modulated by phase-modulator, it is to avoid the bias drift of intensity modulator is asked
Topic.Single sideband modulation mode is realized by optical filter, the frequency model of radiofrequency signal can be handled by the one hand increasing the program
Enclose, another aspect is solved due to periodic power fading problem when signal is transmitted in a fiber caused by dispersion.By using
Fiber optic loop simultaneously combines the frequency displacement that double parallel MZ Mach-Zehnder is achievable storage signal so that the letter of the different number of turns of circulation
Number, in different frequency ranges, prevent different time from entering the interference between signal in ring.Opened simultaneously using wavelength division multiplexer and light
Matrix is closed, by the selection to special frequency channel signal, the delay of radiofrequency signal different time is realized, and combine adjustable delay mould
The time delay that block does further high-fineness to the signal after circulation delay is adjusted, and finally realizes that the random time delay of signal is deposited
Storage, device performance is more flexible, simple in construction to be easier to realize.
In a word, embodiments described above is only embodiments of the invention, is not only used for limiting the guarantor of the present invention
Protect scope, it is noted that for those skilled in the art, can be with present disclosure
Some equivalent deformations and replacement are made, phase-modulator is such as replaced with into intensity modulator, radiofrequency signal can be equally realized
Modulation.Wavelength division multiplexer is replaced with into tunable optical filter or comb filter, the signal of different frequency range can be equally selected.
In addition, realizing that these equivalent variations of time delayed signal frequency spectrum shift also mutually should be regarded as with replacement with other types of shift frequency device
The scope of the protection of the present invention.
Claims (8)
1. a kind of any time-delay mechanism of radiofrequency signal and method for circulating frequency displacement based on microwave photon includes：Light source, Polarization Control
Device, phase-modulator, 2x2 photo-couplers, radio frequency source, 90 ° of radio frequency orthogonal couplers, double parallel MZ Mach-Zehnder, marks
Quasi-monomode fiber, optical band pass filter, erbium-doped fiber amplifier, wavelength division multiplexer, optical switch matrix, adjustable delay module and
Photodetector.It is characterized in that：Phase-modulator is arranged on the emitting light path of light source, and radiofrequency signal is carried in phase-modulation
The rf inputs mouthful of device, the phase modulated signal of phase-modulator output filters wherein one by an optical band pass filter
Individual sideband, realizes the single sideband modulation of signal.The output end of wave filter is connected with an input port of 2x2 photo-couplers.Light
Fine loop segments are connected with another input port and one of output port of photo-coupler, and double parallel mach zhender is adjusted
Device processed is arranged in optical fiber central link so that delay and frequency displacement occur for the modulated signal entered in ring.Photo-coupler another
Output end is connected with wavelength division multiplexer, by optical switch matrix, and certain of selection wavelength division multiplexer is exported all the way, then in conjunction with one
Adjustable delay module, does after further delay adjustment, the optical signal of delay needed for obtaining.Eventually pass through photodetector and carry out light
Electricity conversion recovers the radiofrequency signal after delay.
2. a kind of any time-delay mechanism of radiofrequency signal and side that frequency displacement is circulated based on microwave photon according to claim 1
Method, it is characterised in that：The radiofrequency signal received, using optical SSB modulation mode, the week that optical fiber transmission can be avoided to introduce
The power fading of phase property, and improve the availability of frequency spectrum.
3. a kind of any time-delay mechanism of radiofrequency signal and side that frequency displacement is circulated based on microwave photon according to claim 1
Method, it is characterised in that：The implementation of described optical SSB modulation be phase-modulator and optical band pass filter combination or
The combination of person's intensity modulator and optical band pass filter or double parallel intensity modulator.
4. a kind of any time-delay mechanism of radiofrequency signal and side that frequency displacement is circulated based on microwave photon according to claim 1
Method, it is characterised in that：Double parallel MZ Mach-Zehnder is operated in carrier-suppressed SSB modulation system, realizes signal in ring
Frequency spectrum shift, frequency shift amount be equal to local oscillation signal frequency.So make it that the signal in the different number of turns of loop interior circulation is in not
Same frequency range.Local frequency determine the frequency shift amount of signal in ring, i.e. scheme treatable radiofrequency signal frequency range.
5. a kind of any time-delay mechanism of radiofrequency signal and side that frequency displacement is circulated based on microwave photon according to claim 1
Method, it is characterised in that：The delay time of the circle of circulation one is set by changing the length of optical fiber.
6. a kind of any time-delay mechanism of radiofrequency signal and side that frequency displacement is circulated based on microwave photon according to claim 1
Method, it is characterised in that：Optical band pass filter in optical fiber loop, can anti-stop signal Infinite Cyclic in ring, it is to avoid ring
Interior signal power is excessive to cause amplifier saturation.The bandwidth of optical filter, determines the recyclable maximum number of turns of signal.Therefore light
The bandwidth of wave filter, determines the delay time of maximum.
7. a kind of any time-delay mechanism of radiofrequency signal and side that frequency displacement is circulated based on microwave photon according to claim 1
Method, it is characterised in that：Wavelength division multiplexer and optical switch matrix are used in optocoupler output.Wavelength division multiplexer per defeated all the way
Go out the signal of the signal, i.e. different delayed time of the different circulation number of turns of correspondence.By optical switch matrix, certain can be selected to export all the way,
Obtain the signal of specific delay.
8. a kind of any time-delay mechanism of radiofrequency signal and side that frequency displacement is circulated based on microwave photon according to claim 1
Method, it is characterised in that：An adjustable delay module is placed after optical switch matrix, the signal for switching Output matrix can be done more
The delay adjustment of high-fineness, finally realizes any delay store function of radiofrequency signal.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108521304A (en) * | 2018-03-30 | 2018-09-11 | 华中科技大学 | A kind of super large microwave time delay device |
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| CN108521304A (en) * | 2018-03-30 | 2018-09-11 | 华中科技大学 | A kind of super large microwave time delay device |
| CN108663194A (en) * | 2018-06-08 | 2018-10-16 | 成都卓力致远科技有限公司 | A kind of high-precision optical vector network analysis device and method |
| CN108809437B (en) * | 2018-07-23 | 2021-12-10 | 电子科技大学 | Microwave photon down-conversion device and method |
| CN108809437A (en) * | 2018-07-23 | 2018-11-13 | 电子科技大学 | A kind of microwave photon down conversion device and method based on bidirectional circulating shift frequency |
| CN109617617A (en) * | 2019-01-21 | 2019-04-12 | 中国电子科技集团公司第二十九研究所 | A kind of the multiwavelength laser generation system and method for tunable wave length |
| CN109831250A (en) * | 2019-03-19 | 2019-05-31 | 国网山东省电力公司东营供电公司 | A kind of multi-path network transmission performance testing device and test method |
| CN109831250B (en) * | 2019-03-19 | 2022-07-12 | 国网山东省电力公司东营供电公司 | Multi-channel network transmission performance testing device and testing method |
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| CN111123219A (en) * | 2019-12-27 | 2020-05-08 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Ultra-wideband dense interference signal generation system and method based on optical wavelength division multiplexing |
| CN111884727A (en) * | 2020-07-15 | 2020-11-03 | 杭州电子科技大学 | High-speed photon digital-to-analog conversion method and system based on digital mapping |
| CN113359369A (en) * | 2021-05-11 | 2021-09-07 | 上海交通大学 | High-frequency anti-aliasing band-pass adjustable optical analog-to-digital conversion device |
| CN113359369B (en) * | 2021-05-11 | 2023-11-14 | 上海交通大学 | High-frequency anti-aliasing band-pass adjustable light analog-to-digital conversion device |
| CN113406662B (en) * | 2021-06-17 | 2022-03-11 | 南京航空航天大学 | Stepping frequency modulation system microwave photon broadband MIMO radar detection method and device |
| CN113406662A (en) * | 2021-06-17 | 2021-09-17 | 南京航空航天大学 | Stepping frequency modulation system microwave photon broadband MIMO radar detection method and device |
| CN114189279A (en) * | 2021-11-11 | 2022-03-15 | 合肥工业大学 | Optical dispersion delay controllable system |
| CN114189279B (en) * | 2021-11-11 | 2023-06-13 | 合肥工业大学 | Optical dispersion delay controllable system |
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