CN107086892A - The system for forming microwave photon optical control beam - Google Patents
The system for forming microwave photon optical control beam Download PDFInfo
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- CN107086892A CN107086892A CN201710200936.2A CN201710200936A CN107086892A CN 107086892 A CN107086892 A CN 107086892A CN 201710200936 A CN201710200936 A CN 201710200936A CN 107086892 A CN107086892 A CN 107086892A
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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
- H04B10/501—Structural aspects
- H04B10/506—Multiwavelength transmitters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
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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
- H04B10/572—Wavelength control
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S2013/0236—Special technical features
- G01S2013/0245—Radar with phased array antenna
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- Radar, Positioning & Navigation (AREA)
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- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Plasma & Fusion (AREA)
- Optical Communication System (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention provides a kind of system for forming microwave photon optical control beam, including：Wavelength switch unit, splits and stretches to the original multiwavelength laser to original multiwavelength laser Loading Control signal, and in time domain, obtain and continuous multi-wavelength light carrier wave on output time-domain；Wavelength scanning range control unit, is filtered shaping to continuous multi-wavelength light carrier wave in the time domain, obtains and export the shaping light of the multi-wavelength light carrier wave；Passage light time delay network unit, original radar signal all the way is loaded to the shaping light, obtains and the light that is delayed carries radar signal, reduce and export the original radar signal of multichannel of out of phase.By means of the invention it is possible to which to the quick scanning of wave beam, beam pointing-angle flexibly switches, using dispersive medium spectrum time domain tensile properties, ultrafast wavelength switching is realized, ultrafast beam scanning is obtained.In addition, by the centre frequency and bandwidth of control bandwidth tunable optic filter, beam-scanning angles can be with flexible modulation.
Description
Technical field
The invention belongs to Microwave photonics field, and in particular to a kind of system of formation microwave photon optical control beam.
Background technology
Currently, the highly developed performance to phased array antenna of information proposes higher requirement, such as high-resolution, height
Precision ranging, wave beam quickly scan and adverse circumstances under work, these requirements antenna have larger work tuning bandwidth,
Instantaneous signal bandwidth and faster beam scanning speed.
Optically controlled microwave Wave beam forming is that a kind of use Real-time Delay line replaces electric phase shifter to make the phase difference between array element
Become the time difference, it is to avoid the appearance of wave beam strabismus.It is dry with small volume, light weight, small, the time delay length of loss and anti-electromagnetism
The advantages of disturbing.Now, the research team of countries in the world has been proposed much realizing the scheme of Optically controlled microwave Wave beam forming, its
Middle major part is the photoswitch based on light topological structure, the fine delay line of high-dispersive, fiber grating and integrated light guide delay
Device.Wherein, the optical control beam formation technology based on the fine delay line of high-dispersive obtains tremendous development, and these are based on length scanning
Although optical control beam formation has very big bandwidth, flexible controllable beam position, the beam scanning time is swashed by tunable
The restriction of light device wavelength switching times, beam scanning scope is limited by wavelength tuning range.It is tunable due to commercialization
The wavelength switching times of laser module are longer, and wavelength tuning range and tuning precision are certain, actual answered which greatly limits it
With.In order to realize that Optical Controlled Phased Array Antenna wave beam is quickly scanned, it would be desirable to find a kind of wavelength quickly tune, wavelength tuning model
Flexibly controllable length scanning mode is enclosed, instead of the deficiency of commercialization device, Optical Controlled Phased Array Antenna is further improved practical
Feasibility.
The content of the invention
(1) technical problem to be solved
It is an object of the invention to provide a kind of system for forming microwave photon optical control beam, to solve above-mentioned at least one
Item technical problem.
(2) technical scheme
The invention provides a kind of system for forming microwave photon optical control beam, including：
Wavelength switch unit, for original multiwavelength laser Loading Control signal, and to described original in time domain
Multiwavelength laser is split and stretched, and obtains and continuous multi-wavelength light carrier wave on output time-domain；
Wavelength scanning range control unit, for being filtered shaping to continuous multi-wavelength light carrier wave in the time domain,
Obtain and export the shaping light of the multi-wavelength light carrier wave；
Passage light time delay network unit, for loading original radar signal all the way to the shaping light, is obtained and the light that is delayed
Radar signal is carried, the original radar signal of multichannel of out of phase is reduced and export.
Preferably, the wavelength switch unit can include：
Multiwavelength laser transmitter, for launching the original multiwavelength laser that m beams wavelength is λ, wherein m >=1 simultaneously；
First intensity modulator, for control signal to be loaded into the original multiwavelength laser, splits in time domain
Discrete multi-wavelength light carrier wave on the original multiwavelength laser, output time-domain, wherein, the dutycycle of the control signal is 1:
m；
First dispersive medium, for multi-wavelength light carrier wave discrete in the time domain to be stretched, is converted to continuous in time domain
Multi-wavelength light carrier wave.
Preferably, continuous time interval Δ τ=DL Δ of the multi-wavelength light carrier wave in time domain in the adjacent time domain
λ, wherein, D is the abbe number of the first dispersive medium, and L is the length of the first dispersive medium, and Δ λ is adjacent described original many
Wavelength difference between wavelength laser.
Preferably, the wavelength scanning range control unit can include：
Optical band pass filter, for being filtered shaping to continuous multi-wavelength light carrier wave in the time domain, obtains described
Shaping light；
Fiber amplifier, for compensating light loss of the shaping light during filter shape.
Preferably, the centre wavelength of the optical band pass filter can be 1545nm, and bandwidth can be 1GHz~400GHz.
Preferably, the passage light time delay network unit can include：
Second intensity modulator, for loading original radar signal all the way to the shaping light, obtains the light and carries radar
Signal；
Optical power distributor, is separated for the light to be carried into radar signal constant power, obtains N roads separation light, wherein N >=1；
There are single-mode fiber and the second dispersive medium on N number of parallel channels, each passage, for the N roads point of conducting and be delayed
From light；
Photodetector, for being converted to the original radar signal in N roads to the N roads separation light after delay；
Phase regulator, for entering horizontal phasing control to the original radar signal in N roads, exports the original thunder of out of phase
Up to signal.
Amplitude compensator, the compensation for entering line amplitude to the original radar signal in N roads after phase adjustment.
Preferably, the abbe number difference of second dispersive medium of adjacency channel is identical.
Preferably, the passage light time delay network unit can also include：Polarization Controller, for controlling the shaping light
Polarization direction.
(3) beneficial effect
The present invention is compared to prior art, with advantages below：
1st, the present invention uses multiwavelength laser, with reference to dispersive medium, realizes the beam switchover of nanosecond order；
2nd, the present invention is by the centre frequency and bandwidth of control bandwidth tunable optic filter, and beam-scanning angles can be flexible
Regulation；
3rd, the present invention, using dispersive medium spectrum time domain tensile properties, can realize ultrafast wavelength to the quick scanning of wave beam
Switching, is carried out by light time delay network, and the light carrier of different wave length produces different delayed time amount, and then obtains ultrafast beam scanning.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention；
The schematic diagram for the optical signal that Fig. 2A exports for the multiple-wavelength laser of the embodiment of the present invention；
Fig. 2 B are the schematic diagram in time domain after segmentation of the optical signal of the embodiment of the present invention；
Fig. 2 C are the schematic diagram in time domain after stretching of the optical signal after the segmentation of the embodiment of the present invention；
Fig. 3 is the schematic diagram of the typical beam pointing-angle of the embodiment of the present invention.
Embodiment
The present invention realizes a kind of the micro- of wave beam electronic streak based on spectrum time domain stretching technique and light passband tunable techniques
The sub- Optical Controlled Phased Array Antenna of the glistening light of waves.Time domain stretching is carried out to multi-wavelength light carrier wave using dispersive medium, multi-wavelength light carrier wave is controlled
The time of continuous tuning in time domain；And by the free transmission range for controlling optical filter, it is possible to achieve wave beam is quickly scanned, ripple
The flexible controllable microwave photon Optical Controlled Phased Array Antenna of beam scanning scope.
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in further detail.
The invention provides a kind of system for forming microwave photon optical control beam, multiple-wavelength laser exports multiple light carriers
Enter intensity modulator simultaneously, the data signal of low bit rate is realized to multiple light carriers by the prevention at radio-frequency port of intensity modulator
Segmentation in time domain.After one section of dispersive medium, multiple light carriers realize the stretching in time domain.Pass through tunable optic filter
To multi-wavelength light spectrum of carrier composition carry out shaping, by fiber amplifier (EDFA) light loss of link is compensated into
Enter intensity modulator.The radar signal of transmitting is modulated generation light to light carrier and carries radar signal, by the light of 1: N (N >=1)
After power splitter, into N number of fiber delay line, certain phase difference is produced.The light of output carries radar signal and passes through opto-electronic conversion again
It is secondary to be reduced into original radar signal, it is remote in space by array antenna radiant output after fine tuning phase and Amplitude Compensation
It is concerned with field.
Fig. 1 is the structural representation of the embodiment of the present invention, as shown in figure 1, the formation microwave photon optical control beam is
System includes：Wavelength switch unit, wavelength scanning range control unit and passage light time delay network unit.
Wavelength switch unit, to original multiwavelength laser Loading Control signal, and to original many ripples in time domain
Long laser separation and stretching, obtain and on output time-domain continuous multi-wavelength light carrier wave to wavelength scanning range control unit；
Wavelength scanning range control unit, is filtered shaping to continuous multi-wavelength light carrier wave in the time domain, obtains
And the shaping light of the multi-wavelength light carrier wave is exported to passage light time delay network unit；
Passage light time delay network unit loads original radar signal all the way to the shaping light, obtains and the light that is delayed carries radar
Signal, reduces and exports the original radar signal of multichannel of out of phase.
In embodiments of the present invention, the wavelength switch unit includes multiwavelength laser transmitter 1, the first intensity modulator
2 and first dispersive medium 3, wherein：
Multiwavelength laser transmitter 1, while launching the original multiwavelength laser that m beams wavelength is λ, wherein m >=1；According to this
A kind of embodiment of invention, the wavelength of each light carrier in the multiple-wavelength laser of 128 passages can with independent control,
Adjacent wavelength interval holding 0.1nm is set, and centre frequency is 1545nm.The speed of control signal is 1Gbps, and dutycycle is 1:
128。
First intensity modulator 2, swashs for the digital controlled signal that dutycycle is 1: m to be loaded into the original multi-wavelength
Digital optical modulation is carried out in light, segmentation of the multi-wavelength light carrier wave in time domain is then realized, split in time domain described original many
Discrete multi-wavelength light carrier wave on wavelength laser, output time-domain, produces the optical signal that dutycycle is 1: m.By digital modulation
The data signal that dutycycle is 1: m is carry on multi-wavelength light carrier wave, each light carrier.In the embodiment of the present invention, the last the first
The band of degree modulator 2 is wider than 20GHz, and half-wave voltage is less than 4V.
First dispersive medium 3, multi-wavelength light carrier wave discrete in the time domain is stretched, and is converted to continuous many in time domain
Wavelength optical carrier, because the amount of delay that the light carrier of different wave length is produced in dispersive medium is different, in the adjacent time domain
Continuous time interval Δ τ=DL Δ λ of the multi-wavelength light carrier wave in time domain, wherein, D is the dispersion system of the first dispersive medium
Number, L is the length of the first dispersive medium, and Δ λ is the wavelength difference between the adjacent original multiwavelength laser.Therefore adjacent wave
Light carrier between length is stretched in time domain, becomes time upper linear continuous light carrier.It is specific according to one kind of the present invention
Embodiment, dispersive medium is used as using dispersion compensating fiber.Assuming that abbe number be -256ps/nm.km, it is necessary to dispersive medium
Length be 3.9km；Abbe number is -140ps/nm.km, it is necessary to which the length of abbe number is 7.1km.
The wavelength scanning range control unit includes optical band pass filter 4 and fiber amplifier 5, wherein：
Optical band pass filter 4, the light carrier in the range of filter passband is retained, outside optical filter passband
Light carrier is filtered out, and the light spectrum reshaping to multi-wavelength light carrier wave is realized, for continuous multi-wavelength light carrier wave in the time domain
Shaping is filtered, the shaping light is obtained；In the embodiment of the present invention, the centre wavelength of the optical band pass filter is
1545nm, bandwidth continuous tuning between 1GHz to 400GHz.According to a kind of embodiment of the present invention, tunable filtering
The regulable center frequency of device is humorous, and bandwidth minimum reaches 1.25GHz.In addition, the center frequency for passing through control bandwidth tunable optic filter
Rate and bandwidth so that change is produced by the wavelength and number of wavelengths of the multi-wavelength light carrier wave of adjustable light wave-filter, wave beam is swept
Retouching angle can be with flexible modulation.
Fiber amplifier 5, for compensating light loss of the shaping light during filter shape.
The passage light time delay network unit includes：It is Polarization Controller 6, the second intensity modulator 7, optical power distributor 8, N number of
Parallel channels 9, photodetector 10, phase regulator 11 and amplitude compensator 12.
Polarization Controller 6, the polarization direction for controlling the shaping light.
Second intensity modulator 7, for loading original radar signal all the way to the shaping light, obtains the light and carries radar
Signal；Wherein, radar signal centre frequency is 10GHz, with a width of 4GHz.In the embodiment of the present invention, the first intensity modulator 2
Band is wider than 20GHz, and half-wave voltage is less than 4V.
Optical power distributor 8, is separated for the light to be carried into radar signal constant power, obtains N (N >=1) road separation light；The present invention
In embodiment, the optical power distributor 8 of selection 1: 8 after optical power distributor, produces 8 tunnels separation light.
In the embodiment of the present invention, for N number of parallel channels 9, N takes 8,8 tunnels separation light to be distributed on 8 parallel channels 9 not
Enter line delay.More specifically, having single-mode fiber and the second dispersive medium on each passage, for the N roads separation of conducting and be delayed
Light；In general, the abbe number difference of second dispersive medium of adjacency channel is identical, in the present embodiment, parallel channels 9
Total length be 129.5m, two kinds of second dispersive medium A and B with different abbe numbers are configured with each passage, dispersion is situated between
Matter A abbe number is -256ps/nm.km, and dispersive medium B coefficient is -140ps/nm.km, and the dispersion of each adjacency channel is situated between
Matter A length difference is 18.5m.Thus, the abbe number of each parallel channels 9 is different, with different delay effects.
Photodetector 10, for carrying out opto-electronic conversion to the N roads separation light after delay, is converted to the original radar letter in N roads
Number；
Phase regulator 11, for entering horizontal phasing control to the original radar signal in N roads, exports the original of out of phase
Radar signal.
Amplitude compensator 12, the compensation for entering line amplitude to the original radar signal in N roads after phase adjustment, last amplitude
Radar signal after fine setting passes through one-dimensional array aerial radiation.
Fig. 2A to Fig. 2 C stretches schematic diagram for the spectrum time domain of the embodiment of the present invention, wherein, Fig. 2A is the embodiment of the present invention
Multiple-wavelength laser output optical signal schematic diagram, as shown in Figure 2 A, multiwavelength laser transmitter, while launch 128 beams
Wavelength is λ original multiwavelength laser, and the wavelength of each light carrier in the multiple-wavelength laser of 128 passages can be controlled independently
System.Fig. 2 B are the schematic diagram in time domain after segmentation of the optical signal of the embodiment of the present invention, as shown in Figure 2 B, the first intensity modulated
Dutycycle is " 0 " by device, 1: the 128 Digital Square-Wave control signal of " 1 " is loaded into the original multiwavelength laser and enters line number
Word light modulation, then realizes segmentation of the multi-wavelength light carrier wave in time domain, by square-wave signal modulation after, multi-wavelength light carrier wave
It is divided in time domain, multi-wavelength light carrier wave discrete on the original multiwavelength laser, output time-domain is split in time domain, is produced
Dutycycle is carry on the optical signal that raw dutycycle is 1: 128, the multi-wavelength light carrier wave by digital modulation, each light carrier
For 1: 128 data signal.Wherein it is to have light in the T cycles, is unglazed in the 127T cycles.Entered after dispersive medium, adjacent wavelength
Optical signal produce corresponding delay so that the light carrier of different wave length is by dispersive medium stretching, and light carrier is whole in 0~128T
The individual cycle is uniformly distributed.Fig. 2 C are the schematic diagram in time domain after stretching of the optical signal after the segmentation of the embodiment of the present invention, such as
Shown in Fig. 2 C, the first dispersive medium stretches multi-wavelength light carrier wave discrete in the time domain, is converted to continuous many in time domain
Wavelength optical carrier, because the amount of delay that the light carrier of different wave length is produced in dispersive medium is different, in the adjacent time domain
Continuous multi-wavelength light carrier wave existence time interval delta τ in time domain.
Fig. 3 for the typical beam pointing-angle of the embodiment of the present invention schematic diagram, as shown in figure 3, we choose 5 it is different
Input wavelength (λ1To λ5) present system is simulated.After wave beam is by passage light time delay network unit, 8 roads of output tool
There is the original radar signal of out of phase to space radiation, occur coherent superposition in far-field position, form the light-operated of different directions
Beam position.Its wavelength is λ1During=1545nm, beam pointing-angle is 0 °, and wave beam 3dB width is 8.64 °；When wavelength is λ2=
1552.5nm and λ3During=1537.5nm, beam pointing-angle is ± 30 °, and wave beam 3dB width is 9.6 °；Work as λ4=1556.25nm and
λ5During=1533.75nm, beam pointing-angle is ± 45 °, and wave beam 3dB width is 17.04 °.As can be seen here, different input wavelength
Wave beam, correspond to different beam pointing-angles, its width is also differed, that is to say, that beam pointing-angle determines by wavelength, can
With the wavelength by changing the original multiwavelength laser that multiwavelength laser transmitter is launched, so as to be carried out to beam pointing-angle flexible
Regulation.
Particular embodiments described above, has been carried out further in detail to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail bright, it should be understood that the foregoing is only the present invention specific embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc. should be included in the protection of the present invention
Within the scope of.
Claims (8)
1. a kind of system for forming microwave photon optical control beam, it is characterised in that including：
Wavelength switch unit, for original multiwavelength laser Loading Control signal, and to original many ripples in time domain
Long laser separation and stretching, are obtained and continuous multi-wavelength light carrier wave on output time-domain；
Wavelength scanning range control unit, for being filtered shaping to continuous multi-wavelength light carrier wave in the time domain, is obtained
And export the shaping light of the multi-wavelength light carrier wave；
Passage light time delay network unit, for loading original radar signal all the way to the shaping light, obtains and the light that is delayed carries thunder
Up to signal, the original radar signal of multichannel of out of phase is reduced and exported.
2. system according to claim 1, it is characterised in that the wavelength switch unit includes：
Multiwavelength laser transmitter, for launching the original multiwavelength laser that m beams wavelength is λ, wherein m >=1 simultaneously；
First intensity modulator, for control signal to be loaded into the original multiwavelength laser, splits described in time domain
Discrete multi-wavelength light carrier wave on original multiwavelength laser, output time-domain, wherein, the dutycycle of the control signal is 1: m；
First dispersive medium, for multi-wavelength light carrier wave discrete in the time domain to be stretched, is converted to continuous many in time domain
Wavelength optical carrier.
3. system according to claim 2, it is characterised in that continuous multi-wavelength light carrier wave exists in the adjacent time domain
Time interval Δ τ=DL Δ λ in time domain, wherein, D is the abbe number of the first dispersive medium, and L is the length of the first dispersive medium
Degree, Δ λ is the wavelength difference between the adjacent original multiwavelength laser.
4. system according to claim 1, it is characterised in that the wavelength scanning range control unit includes：
Optical band pass filter, for being filtered shaping to continuous multi-wavelength light carrier wave in the time domain, obtains the shaping
Light；
Fiber amplifier, for compensating light loss of the shaping light during filter shape.
5. system according to claim 4, it is characterised in that the centre wavelength of the optical band pass filter is 1545nm,
With a width of 1GHz~400GHz.
6. system according to claim 1, it is characterised in that the passage light time delay network unit includes：
Second intensity modulator, for loading original radar signal all the way to the shaping light, obtains the light and carries radar signal；
Optical power distributor, is separated for the light to be carried into radar signal constant power, obtains N roads separation light, wherein N >=1；
There are single-mode fiber and the second dispersive medium on N number of parallel channels, each passage, for the N roads separation light that conducts and be delayed；
Photodetector, for being converted to the original radar signal in N roads to the N roads separation light after delay；
Phase regulator, for entering horizontal phasing control, the original radar letter of output out of phase to the original radar signal in N roads
Number.
Amplitude compensator, the compensation for entering line amplitude to the original radar signal in N roads after phase adjustment.
7. system according to claim 6, it is characterised in that the abbe number of second dispersive medium of adjacency channel
Difference is identical.
8. system according to claim 1, it is characterised in that the passage light time delay network unit also includes：
Polarization Controller, the polarization direction for controlling the shaping light.
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| CN108009373A (en) * | 2017-12-15 | 2018-05-08 | 南京航空航天大学 | Light-operated radio frequency beam forms the time space frequency Conceptual Modeling method of system |
| CN108847892A (en) * | 2018-06-08 | 2018-11-20 | 南京航空航天大学 | A kind of wide band radio-frequency Beamforming Method and device based on photonics |
| CN111512576A (en) * | 2017-10-16 | 2020-08-07 | Ii-Vi特拉华股份有限公司 | Method and apparatus for hardware configured network |
| CN111641458A (en) * | 2020-04-30 | 2020-09-08 | 中国电子科技集团公司第三十八研究所 | Universal multichannel optical dispersion delayer |
| CN111740786A (en) * | 2020-06-10 | 2020-10-02 | 电子科技大学 | Integrated optical waveguide beam forming device |
| CN112305504A (en) * | 2020-10-21 | 2021-02-02 | 中国电子科技集团公司第十四研究所 | Radar beam forming system and transmitting and receiving method based on same |
| CN112558053A (en) * | 2020-10-28 | 2021-03-26 | 电子科技大学 | Optical beam forming network device and method based on microwave photon true time delay |
| CN113376747A (en) * | 2021-06-18 | 2021-09-10 | 南京航空航天大学 | Programmable optical time delay matrix and light-operated multi-beam forming device |
| WO2021218505A1 (en) * | 2020-04-30 | 2021-11-04 | 上海禾赛科技股份有限公司 | Laser-radar transmitting apparatus, laser radar, and detection method |
| CN113811891A (en) * | 2019-03-12 | 2021-12-17 | 艾利丹尼森零售信息服务有限公司 | Radio frequency identification antenna formed by multiple cutting processes |
| CN114710230A (en) * | 2022-03-25 | 2022-07-05 | 中国电子科技集团公司第三十八研究所 | Low stray receiving light-controlled beam forming system |
| US11489593B2 (en) | 2020-12-02 | 2022-11-01 | Tmy Technology Inc. | Optical and electrical hybrid beamforming transmitter, receiver, and signal processing method |
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