CN117560081A - On-chip integrated cableless light-operated phased array front-end system - Google Patents
On-chip integrated cableless light-operated phased array front-end system Download PDFInfo
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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
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/118—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication
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- H—ELECTRICITY
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Abstract
The invention discloses an on-chip integrated cableless light-operated phased array front-end system, which comprises a satellite cabin outer light-operated array antenna front-end chip and a satellite cabin inner wave beam control chip. In the transmitting mode, the beam control chip in the satellite cabin processes the microwave signals and emits first N paths of space radio frequency optical signals, the first N paths of space radio frequency optical signals are transmitted to the front end chip of the light-operated array antenna outside the satellite cabin through space light, and the front end chip of the light-operated array antenna outside the satellite cabin processes and emits the first N paths of space radio frequency optical signals; in the receiving mode, the front-end chip of the satellite cabin external light-operated array antenna processes the microwave signals and emits second N paths of spatial radio-frequency optical signals, the second N paths of spatial radio-frequency optical signals are transmitted to the beam control chip in the satellite cabin through the spatial light, and the beam control chip in the satellite cabin processes the second N paths of spatial radio-frequency optical signals and outputs radio-frequency composite signals. The invention can improve the performance of the system, reduce the size and reduce the cost.
Description
Technical Field
The invention relates to the application field of microwave photon and space laser communication, in particular to a monolithically integrated cableless light-operated phased array front-end system.
Background
The microwave photon technology adopts photonics method and means to generate, transmit and process microwave signals, has the advantages of no bandwidth limitation, transparency to any modulation/coding format, electromagnetic compatibility, low transmission loss and the like, and is widely researched in broadband light-operated phased array antennas, array antenna remote systems and the like and enters the engineering application stage. Compared with the traditional microwave technology and digital array technology, the broadband light-operated array not only maintains the advantages of an array system, but also combines the characteristic of large bandwidth of an optical processing technology, and solves the bandwidth bottleneck of the current array system.
However, most of the existing satellite payload light-operated array systems are constructed based on discrete devices, and have the problems of heavy weight, large volume, high cost, poor reliability, easy environmental influence and the like, and a large number of optical fiber cable power division and transmission technologies are generally adopted between the front end of an antenna and a signal processing and control center, so that the scale is huge; the front end of the light-operated array system antenna is usually arranged outside the cabin, and the optical fiber cable is directly exposed to the environment conditions such as high vacuum outside the cabin, high dose irradiation, extreme temperature change and the like, so that the length and refractive index of the optical fiber change, the phase of a transmission signal changes, and the quality of the transmission signal is further affected; the rapid temperature change outside the cabin can accelerate to cause the deformation of the optical cable, the microbending loss is increased to cause the change of the amplitude of the transmission signal, and the long service life is difficult to ensure; the above factors severely restrict its practical application on satellite platforms.
Disclosure of Invention
The invention aims to provide an on-chip integrated cableless light-operated phased array front-end system, which realizes the purposes of high performance, small size and low cost batch of the system.
In order to achieve the above object, the present invention is realized by the following technical scheme:
an on-chip integrated cableless optically controlled phased array front-end system comprises a satellite off-board optically controlled array antenna front-end chip and a satellite on-board beam control chip.
In the transmitting mode, the beam control chip in the satellite cabin processes the microwave signals and emits first N paths of space radio frequency optical signals, the first N paths of space radio frequency optical signals are transmitted to the front end chip of the light-operated array antenna outside the satellite cabin through space light, and the front end chip of the light-operated array antenna outside the satellite cabin processes and emits the first N paths of space radio frequency optical signals.
In the receiving mode, the front-end chip of the satellite outdoor light-operated array antenna processes the microwave signals and emits second N paths of spatial radio frequency optical signals, the second N paths of spatial radio frequency optical signals are transmitted to the satellite indoor beam control chip through spatial light, and the satellite indoor beam control chip processes the second N paths of spatial radio frequency optical signals and outputs radio frequency composite signals.
Optionally, the front-end chip of the satellite off-board light-operated array antenna comprises: the tunable laser device comprises a tunable laser set, a broadband electro-optic modulator set, a first on-chip integrated SOA array, a first integrated OPA transceiver unit and a photoelectric detector set. The satellite in-cabin beam control chip comprises: the tunable laser, the broadband electro-optic modulator, the 1-n optical power divider, the wavelength division multiplexer, the second on-chip integrated SOA array, the integrated OTTD array, the second integrated OPA transceiver unit and the photoelectric detector.
In the transmitting mode, the microwave signal transmitter outputs a broadband microA wave signal of the tunable laser output wavelength lambda 0 The broadband microwave signal is subjected to electro-optic conversion by the broadband electro-optic modulator and modulated to the wavelength lambda 0 Is arranged on the optical carrier of the (a); the 1-division n optical power divider is used for modulating the wavelength lambda 0 The optical carrier wave is split to output n paths of carrier waves lambda 0 A radio frequency optical signal; the second on-chip integrated SOA array is used for the n-path carrier lambda 0 Amplifying the radio frequency optical signals, generating N relative time delay differences among channels through the integrated OTTD array, and emitting the first N paths of spatial radio frequency optical signals through the second integrated OPA transceiver unit; the first N paths of space radio frequency optical signals are transmitted to the front end chip of the satellite outdoor light-operated array antenna through space light, and the first integrated OPA transceiver unit is used for processing the first N paths of space radio frequency optical signals and outputting first N paths of waveguide medium radio frequency optical signals; the first on-chip integrated SOA array is used for amplifying the first N-path waveguide medium radio-frequency optical signals, and the photoelectric detector group is used for carrying out photoelectric conversion on the first N-path waveguide medium radio-frequency optical signals from the first on-chip integrated SOA array and outputting N-path broadband microwave signals; the N paths of broadband microwave signals are radiated out from N antennas respectively through the T/R assembly, and power synthesis is realized in space.
In the receiving mode, the space microwave signals are received by N antennas, and are input into the broadband electro-optic modulator group from the T/R component, and the N paths of wavelengths output by the tunable laser group are respectively lambda 1 ～λ n The space microwave signal is subjected to electro-optic conversion by the broadband electro-optic modulator group and modulated to N paths of wavelengths respectively as lambda 1 ～λ n Outputting N paths of optical carrier radio frequency signals on the optical carrier; the first on-chip integrated SOA array amplifies the N paths of optical carrier radio frequency signals, processes the N paths of optical carrier radio frequency signals through the first integrated OPA transceiver unit and emits second N paths of spatial radio frequency optical signals; the second N paths of spatial radio frequency optical signals are transmitted to a beam control chip in the satellite cabin through spatial light; the second integrated OPA transceiver unit is configured to process the second N-path spatial rf optical signals, and output a second N-path waveguide medium rf optical signalA number; the second N-path waveguide medium radio frequency optical signals generate N-path relative time delay differences through the integrated OTTD array; amplifying the second N-path waveguide medium radio frequency optical signals from the receiving OTTD array 17 by the second on-chip integrated SOA array, respectively, and outputting N-path carrier waves lambda 1 ～λ n Is a radio frequency signal carried by light; the wavelength division multiplexer transmits the N-path carrier wave lambda 1 ～λ n Multiplexing and outputting an optical domain wave-combining radio frequency optical signal, finally completing photoelectric conversion by a photoelectric detector, outputting a radio frequency wave-combining signal, and entering a microwave signal receiver to complete subsequent signal processing.
Optionally, the first on-chip integrated SOA array includes a first upstream radio frequency optical signal SOA array and a first downstream radio frequency optical signal SOA array. In a transmitting mode, the first uplink radio-frequency optical signal SOA array is used for amplifying the first N-path waveguide medium radio-frequency optical signals from the on-chip first integrated OPA transceiver unit. In a receiving mode, the first downlink radio frequency optical signal SOA is used for amplifying the N paths of optical carrier radio frequency optical signals.
Optionally, the first integrated OPA transceiver unit includes: a first receiving OPA optical antenna array plane, a first receiving OPA phase shifter array and a first receiving OPA power division network which are connected with each other; and a second transmitting OPA power division network, a second transmitting OPA phase shifter array and a second transmitting OPA optical antenna array face connected with each other. In a transmitting mode, the first N-path spatial radio frequency optical signals are sequentially processed by the first receiving OPA optical antenna array surface, the first receiving OPA phase shifter array and the first receiving OPA power division network, and the first N-path waveguide medium radio frequency signals are output. In a receiving mode, the N paths of optical carrier radio frequency signals from the first on-chip integrated SOA array are sequentially processed through the second transmitting OPA power division network, the second transmitting OPA phase shifter array and the second transmitting OPA optical antenna array surface, and the second N paths of spatial radio frequency optical signals are output.
Optionally, each of the first receiving OPA optical antenna array plane and the second transmitting OPA optical antenna array plane includes: a first L×M grating optical antennas; the first receive OPA phase shifter array and the second transmit OPA phase shifter array each comprise: a first L x M thermo-optic phase shifters; the first receiving OPA power splitting network and the second transmitting OPA power splitting network each comprise: a first L x M optical channel. In a transmitting mode, a first L×M grating type optical antenna of the first receiving OPA optical antenna array surface is used for receiving the first N paths of space radio frequency optical signals transmitted by space light and outputting L×M paths of optical channel optical signals; the first l×m thermo-optic phase shifters of the first receiving OPA phase shifter array are configured to perform phase tuning processing on the first l×m optical channel optical signals to complete optical beam deflection; the first receiving OPA power division network is configured to power-divide the first l×m optical channel optical signals subjected to phase tuning processing to output the first N waveguide medium radio frequency optical signals. In a receiving mode, the first l×m optical channels of the second transmitting OPA power division network are configured to power-divide the N optical carrier radio frequency signals from the first integrated SOA array to output l×m optical channel optical signals; the first l×m thermo-optic phase shifters of the second transmitting OPA phase shifter array are configured to perform phase tuning processing on the first l×m optical channel optical signals to complete optical beam deflection; the first LxM grating type optical antenna of the second transmitting OPA optical antenna array surface is used for receiving the L xM path optical channel optical signals of the phase tuning processing and outputting the second N path space radio frequency optical signals.
Optionally, the second integrated OPA transceiver unit includes: the system comprises a first transmitting OPA power division network, a first transmitting OPA phase shifter array, a first transmitting OPA optical antenna array face, a second receiving OPA phase shifter array and a second receiving OPA power division network. In a transmitting mode, the N paths of spatial radio frequency optical signals from the OTTD array are sequentially processed through the first transmitting OPA power division network, the first transmitting OPA phase shifter array and the first transmitting OPA optical antenna array surface, and the first N paths of spatial radio frequency optical signals are emitted. In the receiving mode, the second N-path spatial radio frequency optical signals are sequentially processed by the second receiving OPA optical antenna array surface, the second receiving OPA phase shifter array and the second receiving OPA power division network, and the second N-path waveguide medium radio frequency optical signals are output.
Optionally, the first transmitting OPA power division network and the second receiving OPA power division network each include: a second L×M optical channel; the first transmit OPA phase shifter array and the second receive OPA phase shifter array each comprise: a second L x M thermo-optic phase shifters; the first transmitting OPA optical antenna array surface and the second receiving OPA optical antenna array surface both comprise: and a second L×M grating optical antennas. In a transmitting mode, the second l×m optical channels of the first transmitting OPA power division network are used for power division outputting l×m optical channels of the n radio frequency optical signals from the OTTD array; the second l×m thermo-optic phase shifters of the first transmitting OPA phase shifter array are configured to perform phase tuning processing on the second l×m optical channel optical signals to complete optical beam deflection; the second L×M grating optical antennas of the first transmitting OPA optical antenna array surface are used for dividing the second L×M optical channel signals subjected to phase tuning into power and outputting the first N space radio frequency optical signals. In the receiving mode, the second receiving OPA optical antenna array surface 10 4 The second l×m grating optical antennas are configured to receive the second N spatial radio frequency optical signals transmitted by the spatial light and output a second l×m optical channel optical signal; the second l×m thermo-optic phase shifters of the second receiving OPA phase shifter array are configured to perform phase tuning processing on the l×m optical channel optical signals to complete optical beam deflection; and the second L multiplied by M optical channels of the second receiving OPA power division network output the second N waveguide medium radio frequency optical signals through the L multiplied by M optical channel optical signal processing of the phase tuning processing.
Optionally, the integrated OTTD array comprises: a transmit OTTD array and a receive OTTD array. In a transmitting mode, the N paths of radio frequency optical signals from the second on-chip integrated SOA array generate N paths of relative delay differences through the transmitting OTTD array. In a receiving mode, the second N-path waveguide medium radio frequency optical signal generates N-path relative time delay differences through the receiving OTTD array.
Optionally, the transmitting OTTD array and the receiving OTTD array each comprise: a continuously adjustable light delay line structure, an optical switch and an increment adjustment delay line structure.
In a transmitting mode, the continuously adjustable optical delay line structure of the transmitting OTTD array is used for continuously adjusting the delay of the n paths of radio frequency optical signals; the optical switch of the transmitting OTTD array is used for performing optical path switching on the n paths of radio frequency optical signals passing through the continuously adjustable optical delay line structure of the transmitting OTTD array; the incremental adjustment delay line structure of the transmit OTTD array is configured to transmit the n-channel radio frequency optical signals passing through the continuous adjustable optical delay line structure of the transmit OTTD array over incremental adjustment delay lines of different lengths, resulting in quantitative delay adjustment.
In a receiving mode, the continuously adjustable optical delay line structure of the receiving OTTD array is used for continuously adjusting the delay of the radio frequency optical signal of the second N-path waveguide medium; the optical switch of the receiving OTTD array is used for performing optical path switching on the second N-path waveguide medium radio frequency optical signal passing through the continuously adjustable optical delay line structure of the receiving OTTD array; the incremental adjustment delay line structure of the receiving OTTD array is configured to transmit the second N-path waveguide medium radio frequency optical signals passing through the continuous adjustable optical delay line structure of the receiving OTTD array to incremental adjustment delay lines of different lengths, so as to generate quantitative delay adjustment.
Optionally, the second integrated SOA array on chip includes: the second uplink radio frequency optical signal SOA array and the second downlink radio frequency optical signal SOA array. In the transmitting mode, the second uplink radio frequency optical signal SOA array is used for amplifying n paths of radio frequency optical signals. In the receiving mode, the second downlink radio frequency optical signal SOA array is used for amplifying the second N-path waveguide medium radio frequency optical signals from the receiving OTTD array.
The invention has at least one of the following technical effects:
1. The invention provides an on-chip integrated cableless light-operated phased array front end system, which integrates passive devices such as an integrated optical phased array (Optical phased array, OPA), an optical waveguide optical true delay line (Optical true time delay, OTTD), an optical power divider, a wavelength division multiplexer and the like and active devices such as a laser, a modulator, a detector, an on-chip integrated semiconductor optical amplifier (Semiconductor optical amplifier, SOA) and the like on the same substrate by means of advanced integrated optoelectronics and three-dimensional heterogeneous integration processes and combining all-solid-state free space light transmission means, so that the light-operated phased array system has the advantages of small size, light weight, low power consumption and improved system space environment adaptability, and is particularly outstanding in satellite payload systems.
2. The on-chip integrated cableless light-operated phased array front-end system utilizes an integrated optical phased array multi-beam communication technology to construct satellite cabin inner space and cabin outer space optical channels, uses laser as an information carrier, and performs wireless optical communication of cabin outer antenna front-end to cabin inner beam control through laser transmission in free space, thereby solving the problems of size and weight limitation and great influence on time delay jitter caused by an optical cable network.
3. The optical true delay technology based on the integrated optical waveguide delay line is introduced into the optically controlled phased array antenna, the integrated optical delay line adopts an advanced photoetching technology, the delay resolution can reach the sub picosecond level, and the identification capability and the resolution of the phased array radar load can be improved.
Drawings
Fig. 1 is a schematic diagram of an overall structure of an on-chip integrated optical control phased array front-end system without cable according to an embodiment of the invention;
FIG. 1a is a detailed view of the front end chip of the satellite extra-cabin photo-array antenna of FIG. 1;
FIG. 1b is a detailed view of the front end chip of the light control array antenna in the satellite of FIG. 1;
fig. 2 is a schematic diagram of an integrated OPA transceiver unit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an integrated OTTD array structure according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the invention. For a better understanding of the invention with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that any modifications, changes in the proportions, or adjustments of the sizes of structures, proportions, or otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit or essential characteristics thereof.
Fig. 1 is a schematic diagram of an embodiment of an integrated optical control phased array front-end system without cabling on a chip according to an embodiment of the invention. As shown in fig. 1, the on-chip integrated cableless light-controlled phased array front-end system provided in this embodiment includes a satellite off-board light-controlled array antenna front-end chip 1 and a satellite on-board beam control chip 2.
In the transmitting mode, the beam control chip 2 in the satellite cabin processes the microwave signals and emits first N paths of spatial radio frequency optical signals, the first N paths of spatial radio frequency optical signals are transmitted to the front end chip 1 of the light-operated array antenna outside the satellite cabin through the spatial light, and the front end chip 1 of the light-operated array antenna outside the satellite cabin processes and emits the first N paths of spatial radio frequency optical signals.
In the receiving mode, the front-end chip 1 of the satellite outdoor light-operated array antenna processes the microwave signals, emits second N paths of spatial radio frequency optical signals, the second N paths of spatial radio frequency optical signals are transmitted to the beam control chip 2 in the satellite cabin through the spatial light, and the beam control chip 2 in the satellite cabin processes the second N paths of spatial radio frequency optical signals and outputs radio frequency composite signals.
The optical phased array front-end system without cable integrated on the chip, which is provided by the embodiment, integrates passive devices such as an integrated optical phased array (Optical phased array, OPA), an optical waveguide optical true delay line (Optical true time delay, OTTD), an optical power divider, a wavelength division multiplexer and the like and active devices such as a laser, a modulator, a detector, an on-chip integrated semiconductor optical amplifier (Semiconductor optical amplifier, SOA) and the like on the same substrate by means of advanced integrated optoelectronics and three-dimensional heterogeneous integration technology and combining all-solid free space optical transmission means, so that the optical phased array system has the advantages of small size, light weight, low power consumption and improved system space environment adaptability, and is particularly outstanding in satellite payload systems.
As shown in fig. 1a, the front-end chip 1 of the satellite outdoor light-operated array antenna comprises: a tunable laser group (the tunable laser group comprises n tunable lasers 3) 1 ～3 n ) A broadband electro-optic modulator bank (the broadband electro-optic modulator bank comprising: n broadband electro-optic modulators 4 1 ～4 n ) A first on-chip integrated SOA array 16, a first integrated OPA transceiver unit 15, and a photodetector group (the photodetector group includes: n photodetectors 11 1 ～11 n ) And finally, bidirectional cableless receiving and transmitting of the array broadband radio frequency signals are realized.
As shown in fig. 1b, the satellite intra-cabin beam control chip 2 includes: tunable laser 3 0 Broadband electro-optic modulator 4 0 The 1-division n optical power divider 5, the wavelength division multiplexer 12, the second on-chip integrated SOA array 13, the integrated OTTD array 17, the second integrated OPA transceiver unit 14 and the photodetector 11 0 Finally, the time delay control and the bidirectional cableless receiving and transmitting of the multichannel broadband radio frequency signals are realized.
Referring to fig. 1a and 1b, in a transmitting mode, the microwave signal transmitter outputs a broadband microwave signal, the tunable laser 3 0 Output wavelength lambda 0 Is passed through the broadband electro-optic modulator 4 0 Electro-optical conversion, modulation to wavelength lambda 0 Is arranged on the optical carrier of the (a); the 1-n optical power divider 5 is used for modulating the wavelength lambda 0 The optical carrier wave is split to output n paths of carrier waves lambda 0 A radio frequency optical signal; the second on-chipAn integrated SOA array 13 is used for the n-way carrier lambda 0 The radio frequency optical signals are amplified, and the relative time delay difference among N channels is generated through the integrated OTTD array 17, and the first N paths of spatial radio frequency optical signals are emitted through the second integrated OPA transceiver unit 14; the first N-path spatial radio frequency optical signals are transmitted to the front-end chip 1 of the satellite outdoor light-operated array antenna through spatial light, and the first integrated OPA transceiver unit 15 is used for processing the first N-path spatial radio frequency optical signals and outputting first N-path waveguide medium radio frequency optical signals; the first on-chip integrated SOA array 16 is configured to amplify the first N-path waveguide medium radio frequency optical signal, and the photodetector group performs photoelectric conversion on the first N-path waveguide medium radio frequency optical signal from the first on-chip integrated SOA array 16, and outputs N-path broadband microwave signals; the N paths of broadband microwave signals are radiated out from N antennas respectively through the T/R assembly, and power synthesis is realized in space.
In the receiving mode, the space microwave signals are received by N antennas, and are input into the broadband electro-optic modulator group from the T/R component, and the N paths of wavelengths output by the tunable laser group are respectively lambda 1 ～λ n The space microwave signal is subjected to electro-optic conversion by the broadband electro-optic modulator group and modulated to N paths of wavelengths respectively as lambda 1 ～λ n Outputting N paths of optical carrier radio frequency signals on the optical carrier; the first on-chip integrated SOA array 16 amplifies the N-path optical carrier radio frequency signals, processes the N-path optical carrier radio frequency signals through the first integrated OPA transceiver unit 15, and emits second N-path spatial radio frequency optical signals; the second N paths of spatial radio frequency optical signals are transmitted to the beam control chip 2 in the satellite cabin through spatial light; the second integrated OPA transceiver unit 14 is configured to process the second N-path spatial radio frequency optical signals, and output a second N-path waveguide medium radio frequency optical signal; the second N-path waveguide medium radio frequency optical signal generates N-path relative delay differences through the integrated OTTD array 17; amplifying the second N-path waveguide medium radio frequency optical signals from the receiving OTTD array 17 by the second on-chip integrated SOA array 13 respectively, and outputting N-path carrier waves lambda 1 ～λ n Is a radio frequency signal carried by light; the wavelength divisionMultiplexer 12 couples the N-way carrier lambda 1 ～λ n Multiplexing and outputting an optical domain multiplexing radio frequency optical signal, and finally using the photoelectric detector 11 0 And (3) completing photoelectric conversion, outputting a radio frequency composite signal, and entering a microwave signal receiver to complete subsequent signal processing.
With continued reference to fig. 1a and 1b, the first integrated SOA array 16 on chip includes a first upstream rf optical signal SOA array (6 31 ～6 3n ) And a first downstream radio frequency optical signal SOA array (6 11 ～6 1n ). In the transmit mode, the first upstream radio frequency optical signal SOA array (6 31 ～6 3n ) For amplifying said first N-way waveguide medium radio frequency optical signal from said first integrated OPA transceiver unit 15. In the receive mode, the first downlink radio frequency optical signal SOA (6 11 ～6 1n ) And the optical amplifier is used for amplifying the N paths of optical carrier radio frequency optical signals.
The first integrated OPA transceiving unit 15 comprises: first receiving OPA optical antenna array plane 10 connected to each other 2 First receive OPA phase shifter array 9 2 And a first receiving OPA power division network 8 2 The method comprises the steps of carrying out a first treatment on the surface of the And, a second transmitting OPA power dividing network 8 connected to each other 3 Second transmitting OPA phase shifter array 9 3 And a second transmitting OPA optical antenna array plane 10 3 . In the transmitting mode, the first N-path spatial rf optical signals sequentially pass through the first receiving OPA optical antenna array plane 10 2 Said first receive OPA phase shifter array 9 2 And said first receiving OPA power division network 8 2 And processing, namely outputting the first N-path waveguide medium radio frequency signals. In the receiving mode, the N optical carrier radio frequency signals from the first integrated SOA array 16 sequentially pass through the second transmitting OPA power dividing network 8 3 Said second transmit OPA phase shifter array 9 3 And the second transmitting OPA optical antenna array plane 10 3 And processing, namely outputting the second N paths of spatial radio frequency optical signals.
The first receiving OPA optical antenna array surface 10 2 And the second transmitting OPA optical antenna array plane 10 3 All include: first L x M grating lightAn antenna; the first receive OPA phase shifter array 9 2 And said second transmit OPA phase shifter array 9 3 All include: a first L x M thermo-optic phase shifters; the first receiving OPA power division network 8 2 And said second transmitting OPA power division network 8 3 All include: a first L x M optical channel. In the transmitting mode, the first receiving OPA optical antenna array surface 10 2 The first L x M grating type optical antenna is used for receiving the first N paths of space radio frequency optical signals transmitted through space light and outputting L x M paths of optical channel optical signals; the first receive OPA phase shifter array 9 2 The first l×m thermo-optical phase shifters are configured to perform phase tuning processing on the first l×m optical channel optical signals to complete optical beam deflection; the first receiving OPA power division network 8 2 The first l×m optical channel optical signals after phase tuning are used for power dividing the first l×m optical channel optical signals after phase tuning processing to output the first N waveguide medium radio frequency optical signals. In the receive mode, the second transmitting OPA power division network 8 3 The first lxm optical channel of the first chip is configured to power-divide the N optical carrier radio frequency signals from the integrated SOA array 16 to output lxm optical channel optical signals; the second transmit OPA phase shifter array 9 3 The first l×m thermo-optical phase shifters are configured to perform phase tuning processing on the first l×m optical channel optical signals to complete optical beam deflection; the second transmitting OPA optical antenna array surface 10 3 The first lxm grating type optical antenna 18 is used for receiving the lxm optical channel optical signals of the phase tuning process and outputting the second N space rf optical signals.
The second integrated OPA transceiver unit 14 comprises: first transmitting OPA power division network 8 1 First transmitting OPA phase shifter array 9 1 First transmitting OPA optical antenna array surface 10 1 Second receiving OPA optical antenna array plane 10 4 Second receive OPA phase shifter array 9 4 And a second receiving OPA power division network 8 4 . In the transmitting mode, the n paths of spatial radio frequency optical signals from the OTTD array 17 sequentially pass through the first transmitting OPA power dividing network 8 1 First transmitting OPA phase shifter array 9 1 And a first transmitting OPA optical antenna array plane 10 1 And processing, namely emitting the first N paths of space radio frequency optical signals. In the receiving mode, the second N-path spatial rf optical signals sequentially pass through the second receiving OPA optical antenna array plane 10 4 Second receive OPA phase shifter array 9 4 And a second receiving OPA power division network 8 4 And processing, namely outputting the second N-path waveguide medium radio frequency optical signals.
The first transmitting OPA power division network 8 1 And a second receiving OPA power division network 8 4 All include: a second L×M optical channel; the first transmit OPA phase shifter array 9 1 And a second receive OPA phase shifter array 9 4 All include: a second L x M thermo-optic phase shifters; the first transmitting OPA optical antenna array surface 10 1 And a second receiving OPA optical antenna array plane 10 4 All include: and a second L×M grating optical antennas. In transmit mode, the first transmit OPA power division network 8 1 Is used for dividing the power of the n paths of radio frequency optical signals from the OTTD array 17 into l×m paths of optical channels; the first transmit OPA phase shifter array 9 1 The second l×m thermo-optical phase shifters are configured to perform phase tuning processing on the second l×m optical channel optical signals to complete optical beam deflection; the first transmitting OPA optical antenna array surface 10 1 The second l×m grating optical antennas are configured to power-divide the second l×m optical channel signals subjected to phase tuning to output the first N spatial radio frequency optical signals. In the receiving mode, the second receiving OPA optical antenna array surface 10 4 The second l×m grating optical antennas are configured to receive the second N spatial radio frequency optical signals transmitted by the spatial light and output a second l×m optical channel optical signal; the second receive OPA phase shifter array 9 4 The second L×M thermo-optical phase shifters are used for performing phase tuning processing on the L×M optical channel optical signals so as to complete optical beam deflection; the second receiving OPA power division network 8 4 The L multiplied by M optical channels subjected to phase tuning treatment output the second N waveguide medium radio frequency optical signals.
The integrated OTTD array 17 comprises: transmitting OTTD array 7 1 And receive OTTD array 7 2 . In transmit mode, the n-way radio frequency optical signal from the second integrated on-chip SOA array 13 passes through the transmit OTTD array 7 1 Resulting in a relative delay difference between the N channels. In the receiving mode, the second N-path waveguide medium radio frequency optical signal passes through the receiving OTTD array 7 2 Resulting in a relative delay difference between the N channels.
The transmitting OTTD array 7 1 The delay control unit is used for controlling the delay amount of the n paths of radio frequency optical signals; the receiving OTTD array 7 2 And the delay control unit is used for controlling the delay amount of the second N-path waveguide medium radio frequency optical signals. The transmitting OTTD array 7 1 And the receiving OTTD array 7 2 All include: a continuously adjustable light delay line structure, an optical switch and an increment adjustment delay line structure.
In transmit mode, the transmit OTTD array 7 1 The continuously adjustable optical delay line structure is used for carrying out high-precision continuous adjustment on the delay of the n paths of radio frequency optical signals, wherein the continuously adjustable optical delay line structure comprises a plurality of cascaded micro-ring structures, and the high-precision continuous adjustment is carried out on the delay of the radio frequency optical signals through tuning micro-ring coupling coefficients and additional phase shifts; the transmitting OTTD array 7 1 For passing through the transmitting OTTD array 7 1 The optical path of the n paths of radio frequency optical signals of the continuously adjustable optical delay line structure is switched; the transmitting OTTD array 7 1 Comprises optical waveguides of different lengths by modulating the transmit OTTD array 7 1 Through the transmitting OTTD array 7 1 The n paths of radio frequency optical signals of the continuously adjustable optical delay line structure are transmitted by incremental adjustment delay lines with different lengths, so that quantitative delay adjustment is generated.
In the receive mode, the receive OTTD array 7 2 The continuously adjustable optical delay line structure is used for carrying out high-precision continuous adjustment on the delay of the radio frequency optical signal of the second N-path waveguide medium, wherein the continuously adjustable optical delay line structure comprises a plurality of cascaded micro-ring structures, and the coupling coefficient and the addition of the tuning micro-ring structures The phase shift carries out high-precision continuous adjustment on the delay of the radio frequency optical signal; the receiving OTTD array 7 2 The optical switch is used for passing through the receiving OTTD array 7 2 The second N-path waveguide medium radio frequency optical signals of the continuously adjustable optical delay line structure are subjected to optical path switching; the receiving OTTD array 7 2 Comprises optical waveguides of different lengths by modulating the transmit OTTD array 7 2 Through the receiving OTTD array 7 2 The second N-path waveguide medium radio frequency optical signals of the continuously adjustable optical delay line structure are transmitted by incremental adjustment delay lines with different lengths, so that quantitative delay adjustment is generated.
The second integrated SOA array on chip 13 includes: second uplink radio frequency optical signal SOA array (6) 11 ～6 1n ) And a second downstream radio frequency optical signal SOA array (6 41 ～6 4n ). In the transmit mode, the second upstream radio frequency optical signal SOA array (6 11 ～6 1n ) The device is used for amplifying n paths of radio frequency optical signals. In the receive mode, the second downstream radio frequency optical signal SOA array (6 41 ～6 4n ) For receiving OTTD arrays 7 from 2 Amplifying the second N-way waveguide medium radio frequency optical signal.
For a better understanding of the above embodiments, the following explains the role of the functional units on the respective chips:
The tunable laser group (3 1 ～3 n ) Can realize the wavelength range lambda 1 ～λ n Is continuously tuned to output lambda 1 ～λ n Is an optical carrier of the optical network.
Said broadband electro-optic modulator group (4 1 ～4 n ) The electro-optical conversion of the broadband radio frequency signal is realized, and the optical carrier radio frequency signal is output.
The photodetector array (11 1 ～11 n ) Photoelectric conversion of the radio frequency optical signals is realized, and broadband radio frequency signals are output.
The first on-chip integrated SOA array 16 comprises a first upstream radio frequency optical signal SOA array (6 31 ～6 3n ) And a first downlinkRadio frequency optical signal SOA array (6) 11 ～6 1n ) Wherein the first upstream radio frequency optical signal SOA array (6 31 ～6 3n ) Respectively to n paths of carrier lambda 0 Is amplified by the radio frequency optical signal of (a), a first downstream radio frequency optical signal SOA (6 11 ～6 1n ) Respectively to carrier wave lambda 1 ～λ n Is amplified.
The first integrated OPA transceiver unit 15 comprises a first receiving OPA optical antenna array plane 10 2 First receive OPA phase shifter array 9 2 First receiving OPA power dividing network 8 2 Second transmitting OPA power division network 8 3 Second transmitting OPA phase shifter array 9 3 And a second transmitting OPA optical antenna array plane 10 3 And the space receiving and transmitting of the radio frequency optical signals are realized.
The OPA power division network (8 2 ，8 3 ) The input power division output L multiplied by M paths of optical channels of n paths of radio frequency optical signals are realized.
The OPA phase shifter array (9 2 ，9 3 ) The optical fiber includes L×M thermal optical phase shifters 19 to realize phase tuning of optical signals of L×M optical channels, thereby completing optical beam deflection.
The OPA optical antenna array plane (10) 2 ，10 3 ) Comprises L×M grating optical antennas 18, and is used for completing external radiation of n laser beams and receiving n laser beams in space.
The tunable laser 3 0 Output wavelength lambda 0 Is an optical carrier of the optical network.
Said broadband electro-optic modulator 4 0 The electro-optical conversion of the broadband radio frequency signal is realized, and the optical carrier radio frequency signal is output.
The photodetector 11 0 Photoelectric conversion of 1-path optical domain combined wave radio frequency optical signals is realized, and radio frequency combined wave signals are output.
The 1-n optical power divider 5 is used for realizing the light division of the optical carrier radio frequency signals and outputting n paths of radio frequency optical signals.
The wavelength division multiplexer 12 implements an n-way carrier lambda 1 ～λ n And outputs a path of optical domain multiplexing signal.
The set ofThe OTTD array 17 comprises a transmitting OTTD array 7 1 And receive OTTD array 7 2 The relative phase shift between the T/R component transmitting element and receiving element signals is generated based on the true time delay technology, so that the scanning of the microwave beam direction of the light-operated phased array is realized.
Said OTTD array (7 1 、7 2 ) The device comprises a continuous adjustable light delay line structure, an optical switch and an incremental adjustment delay line structure, and simultaneously realizes delay quantity control of n paths of radio frequency optical signals; the continuously adjustable optical delay structure comprises a plurality of cascaded micro-ring structures, and high-precision continuous adjustment is carried out on the radio frequency optical signal delay through tuning micro-ring coupling coefficients and additional phase shift; the optical switch performs optical path switching, the incremental adjustment delay line structure comprises optical waveguides with different lengths, and radio frequency optical signals can be transmitted on the incremental adjustment delay lines with different lengths by adjusting the optical switch, so that specific amount delay adjustment is generated.
The second on-chip integrated SOA array 13 comprises a second upstream radio frequency optical signal SOA array (6 11 ～6 1n ) And a second downstream radio frequency optical signal SOA array (6 41 ～6 4n ) Wherein the second upstream radio frequency optical signal SOA array (6 11 ～6 1n ) Respectively to n paths of carrier lambda 0 Is amplified by a second downstream radio frequency optical signal SOA array (6 41 ～6 4n ) Respectively to carrier wave lambda 1 ～λ n Is amplified.
The second integrated OPA transceiver unit 14 comprises a first transmitting OPA power division network 8 1 First transmitting OPA phase shifter array 9 1 First transmitting OPA optical antenna array surface 10 1 Second receiving OPA optical antenna array plane 10 4 Second receive OPA phase shifter array 9 4 And a second receiving OPA power division network 8 4 The optical delay control of the multichannel radio frequency signals and the spatial transceiving of the radio frequency optical signals are realized.
The OPA power division network (8 1 ，8 4 ) The input power division output L multiplied by M paths of optical channels of n paths of radio frequency optical signals are realized.
The OPA phase shifter array (9 1 ，9 4 ) Comprising L×M thermo-optic phase shifters 19 to realize L×MThe phase of the optical signal of the optical channel is tuned, so that the deflection of the optical wave beam is completed.
The OPA optical antenna array plane (10) 1 ，10 4 ) Comprises L×M grating optical antennas 18, and is used for completing external radiation of N laser beams and receiving N laser beams in space.
For a better understanding of the above embodiments, the following explains the relationship of the functional units on the above chips:
the light-operated phased array front-end system is in a transmitting mode, microwave signals are upwards transmitted to the front-end chip 1 of the light-operated array antenna outside the satellite cabin by the beam control chip 2 in the satellite cabin, the microwave signal transmitter outputs broadband microwave signals, and the tunable laser 3 0 Output wavelength lambda 0 Is subjected to broadband electro-optic modulator 4 0 Electro-optical conversion, modulation to wavelength lambda 0 Is arranged on the optical carrier of the (a); n paths of radio frequency optical signals are output through the 1-n optical power divider 5, and n second uplink radio frequency optical signal SOA arrays (6 11 ～6 1n ) Amplifying; by transmitting OTTD array 7 1 Generating N relative delay differences among channels, and sequentially transmitting the first transmitting OPA power division network 8 through the second integrated OPA transceiver unit 14 1 First transmitting OPA phase shifter array 9 1 And a first transmitting OPA optical antenna array plane 10 1 And emitting the first N paths of space radio frequency optical signals. The space light is transmitted to the front end chip 1 of the satellite cabin external light-operated array antenna, and the first integrated OPA receiving and transmitting unit 15 receives the first N paths of space radio frequency light signals, namely the space radio frequency light signals sequentially pass through the first receiving OPA optical antenna array surface 10 2 First receive OPA phase shifter array 9 2 And a first receiving OPA power division network 8 2 Outputs a first N-path waveguide medium radio frequency optical signal which is respectively formed by a first uplink radio frequency optical signal SOA array (6 31 ～6 3n ) Is amplified and finally amplified by a photodetector (11 1 ～11 n ) And (3) completing photoelectric conversion of the radio frequency optical signals and outputting N paths of broadband microwave signals. Microwave signals are radiated from N antennas through the T/R assembly, and power synthesis is realized in space.
The light-operated phased array front-end system is in a receiving mode, and microwave signals are emitted by satellite outside the cabinThe front end chip 1 of the array antenna is downwards transmitted to the beam control chip 2 in the satellite cabin, the space microwave signals are received by N antennas, and the space microwave signals are input to the broadband electro-optic modulator group (4) from the T/R assembly 1 ～4 n ) Electro-optical conversion is completed, and the light is respectively modulated to a tunable laser group (3 1 ～3 n ) The emitted N paths of wavelengths are respectively lambda 1 ～λ n Outputs N paths of optical carrier radio frequency signals, and is formed by a first downlink radio frequency optical signal SOA array (6 11 ～6 1n ) Amplifying; sequentially transmitting the second transmitting OPA optical antenna array surface 10 via the first integrated OPA transceiver unit 15 3 Second transmitting OPA phase shifter array 9 3 And a second transmitting OPA power division network 8 3 And emitting a second N paths of spatial radio frequency optical signals. The space light is transmitted to the beam control chip 2 in the satellite cabin, and the second integrated OPA transceiver unit 14 receives N space radio frequency light signals, namely the space light signals sequentially pass through the second receiving OPA optical antenna array surface 10 4 Second receive OPA phase shifter array 9 4 And a second receiving OPA power division network 8 4 Outputting a second N-path waveguide medium radio frequency optical signal and receiving the OTTD array 7 2 Generates N relative delay differences among the channels, and is respectively controlled by a second downlink radio frequency optical signal SOA array (6 41 ～6 4n ) Optical amplification is performed, and the wavelength division multiplexer 12 amplifies the N-path carrier wave lambda 1 ～λ n Multiplexing and outputting an optical domain multiplexing radio frequency optical signal, and finally using the photoelectric detector 11 0 And (3) completing photoelectric conversion, outputting a radio frequency composite signal, and entering a microwave signal receiver to complete subsequent signal processing.
In summary, the present embodiment discloses an on-chip integrated optical control phased array front-end system, which integrates passive devices such as an integrated optical phased array, an optical waveguide optical true delay line, an optical power divider, a wavelength division multiplexer and active devices such as a laser, a modulator, a detector and an on-chip integrated semiconductor optical amplifier on the same substrate by means of advanced integrated optoelectronics and three-dimensional heterogeneous integration technology and combining with an all-solid-state free space optical transmission means. The integrated optical phased array multi-beam communication technology is utilized to construct satellite intra-cabin and extra-cabin space optical channels, laser is used as an information carrier, and wireless optical communication of extra-cabin antenna front end to intra-cabin beam control is carried out through laser transmission in free space, so that the problems that the size and weight limitation and time delay jitter caused by an optical cable network are greatly influenced by environment are solved, the light-operated phased array system is small in size and light in weight, low in power consumption and improved in system space environment adaptability.
While the present invention has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the invention. Many modifications and substitutions of the present invention will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (10)
1. The on-chip integrated cabling-free light-operated phased array front end system is characterized by comprising a satellite cabin external light-operated array antenna front end chip (1) and a satellite cabin internal wave beam control chip (2), wherein in a transmitting mode, the satellite cabin internal wave beam control chip (2) processes microwave signals and emits first N paths of space radio frequency optical signals, the first N paths of space radio frequency optical signals are transmitted to the satellite cabin external light-operated array antenna front end chip (1) through space light, and the satellite cabin external light-operated array antenna front end chip (1) processes and emits the first N paths of space radio frequency optical signals;
in a receiving mode, the front-end chip (1) of the satellite outdoor light-operated array antenna processes microwave signals, emits second N paths of spatial radio-frequency optical signals, the second N paths of spatial radio-frequency optical signals are transmitted to the beam control chip (2) in the satellite cabin through spatial light, and the beam control chip (2) in the satellite cabin processes the second N paths of spatial radio-frequency optical signals and outputs radio-frequency composite signals.
2. The integrated cableless optically controlled phased array front-end system of claim 1, wherein,
the front-end chip (1) of the satellite outdoor light-operated array antenna comprises: a tunable laser set, a broadband electro-optic modulator set, a first on-chip integrated SOA array (16), a first integrated OPA transceiver unit (15) and a photodetector set;
the satellite cabin beam control chip (2) comprises: tunable laser (3) 0 ) Broadband electro-optic modulator (4) 0 ) The optical power divider comprises a 1-division n optical power divider (5), a wavelength division multiplexer (12), a second on-chip integrated SOA array (13), an integrated OTTD array (17), a second integrated OPA transceiver unit (14) and a photoelectric detector (11) 0 )；
In a transmitting mode, the microwave signal transmitter outputs a broadband microwave signal, the tunable laser (3 0 ) Output wavelength lambda 0 Is provided, the broadband microwave signal is transmitted through the broadband electro-optic modulator (4 0 ) Electro-optical conversion, modulation to wavelength lambda 0 Is arranged on the optical carrier of the (a); the 1-division n optical power divider (5) is used for modulating the wavelength lambda 0 The optical carrier wave is split to output n paths of carrier waves lambda 0 A radio frequency optical signal; the second on-chip integrated SOA array (13) is used for the n-way carrier lambda 0 The radio frequency optical signals are amplified, and N channels of relative time delay differences are generated through the integrated OTTD array (17) and the first N paths of spatial radio frequency optical signals are emitted through the second integrated OPA transceiver unit (14);
The first N paths of space radio frequency optical signals are transmitted to the front end chip (1) of the satellite outdoor light-operated array antenna through space light, and the first integrated OPA transceiver unit (15) is used for processing the first N paths of space radio frequency optical signals and outputting first N paths of waveguide medium radio frequency optical signals; the first on-chip integrated SOA array (16) is used for amplifying the first N-path waveguide medium radio-frequency optical signals, and the photoelectric detector group is used for performing photoelectric conversion on the first N-path waveguide medium radio-frequency optical signals from the first on-chip integrated SOA array (16) and outputting N-path broadband microwave signals; the N paths of broadband microwave signals are radiated out from N antennas respectively through the T/R assembly, and power synthesis is realized in space;
in the receiving mode, the space microwave signals are received by N antennas, and are input into the broadband electro-optic modulator group from the T/R component, and the N paths of wavelengths output by the tunable laser group are respectively lambda 1 ～λ n Is provided with an optical carrier wave of (a),the space microwave signal is subjected to electro-optic conversion by the broadband electro-optic modulator group and modulated to N paths of wavelengths respectively as lambda 1 ～λ n Outputting N paths of optical carrier radio frequency signals on the optical carrier; the first on-chip integrated SOA array (16) amplifies the N paths of optical carrier radio frequency signals, processes the N paths of optical carrier radio frequency signals through the first integrated OPA transceiver unit (15) and emits second N paths of spatial radio frequency optical signals;
The second N paths of spatial radio frequency optical signals are transmitted to a beam control chip (2) in the satellite cabin through spatial light; the second integrated OPA transceiver unit (14) is used for processing the second N paths of space radio frequency optical signals and outputting second N paths of waveguide medium radio frequency optical signals; the second N-path waveguide medium radio frequency optical signal generates N-path relative time delay differences through the integrated OTTD array (17); amplifying the second N-path waveguide medium radio frequency optical signals from the receiving OTTD array (17) by the second on-chip integrated SOA array (13) respectively, and outputting N-path carrier waves lambda 1 ～λ n Is a radio frequency signal carried by light; the wavelength division multiplexer (12) divides the N-way carrier wave lambda 1 ～λ n Is multiplexed with the optical carrier radio frequency signal to output a path of optical domain combined wave radio frequency optical signal, and finally is detected by a photoelectric detector (11) 0 ) And (3) completing photoelectric conversion, outputting a radio frequency composite signal, and entering a microwave signal receiver to complete subsequent signal processing.
3. The on-chip integrated optical control phased array front end system of claim 2, characterized in that the first on-chip integrated SOA array (16) comprises a first upstream radio frequency optical signal SOA array (6 31 ～6 3n ) And a first downstream radio frequency optical signal SOA array (6 11 ～6 1n ) The method comprises the steps of carrying out a first treatment on the surface of the In the transmit mode, the first upstream radio frequency optical signal SOA array (6 31 ～6 3n ) Amplifying the first N-way waveguide medium radio frequency optical signal from the first integrated OPA transceiver unit (15);
in the receive mode, the first downlink radio frequency optical signal SOA (6 11 ～6 1n ) And the optical amplifier is used for amplifying the N paths of optical carrier radio frequency optical signals.
4. The on-chip integrated optical control phased array front end system of claim 2, characterized in that the first integrated OPA transceiver unit (15) comprises: first receiving OPA optical antenna array planes (10) 2 ) A first receiving OPA phase shifter array (9 2 ) And a first receiving OPA power division network (8 2 ) The method comprises the steps of carrying out a first treatment on the surface of the And, a second interconnected transmitting OPA power division network (8 3 ) A second transmitting OPA phase shifter array (9 3 ) And a second transmitting OPA optical antenna array plane (10 3 )；
In the transmitting mode, the first N paths of space radio frequency optical signals sequentially pass through the first receiving OPA optical antenna array surface (10 2 ) Said first receiving OPA phase shifter array (9 2 ) And said first receiving OPA power division network (8 2 ) Processing, namely outputting the first N-path waveguide medium radio frequency signals;
in a receiving mode, the N optical carrier radio frequency signals from the first on-chip integrated SOA array (16) sequentially pass through the second transmitting OPA power division network (8 3 ) Said second transmitting OPA phase shifter array (9 3 ) And said second transmitting OPA optical antenna array plane (10 3 ) And processing, namely outputting the second N paths of spatial radio frequency optical signals.
5. The integrated cableless optically controlled phased array front-end system of claim 4, wherein,
the first receiving OPA optical antenna array plane (10 2 ) And said second transmitting OPA optical antenna array plane (10 3 ) All include: a first L×M grating optical antennas;
the first receiving OPA phase shifter array (9 2 ) And said second transmit OPA phase shifter array (9 3 ) All include: a first L x M thermo-optic phase shifters;
said first receiving OPA power division network (8 2 ) And said second transmitting OPA power division network (8 3 ) All include: a first L×M optical channel;
in a transmitting mode, the first receiving OPA optical antenna array plane (10 2 ) The first L x M grating type optical antenna is used for receiving the first N paths of space radio frequency optical signals transmitted through space light and outputting L x M paths of optical channel optical signals;
the first receiving OPA phase shifter array (9 2 ) The first l×m thermo-optical phase shifters are configured to perform phase tuning processing on the first l×m optical channel optical signals to complete optical beam deflection;
said first receiving OPA power division network (8 2 ) The first L multiplied by M optical channel optical signals are used for outputting the first N waveguide medium radio frequency optical signals by power division of the first L multiplied by M optical channel optical signals subjected to phase tuning treatment;
in a receive mode, the second transmitting OPA power division network (8 3 ) The first l×m optical channels are configured to power-divide the N optical carrier radio frequency signals from the first integrated SOA array (16) on the first chip to output l×m optical channel optical signals;
the second transmitting OPA phase shifter array (9 3 ) The first l×m thermo-optical phase shifters are configured to perform phase tuning processing on the first l×m optical channel optical signals to complete optical beam deflection;
the second transmitting OPA optical antenna array plane (10 3 ) Is configured to receive the l×m optical channel optical signal of the phase tuning process and output the second N spatial radio frequency optical signal.
6. The on-chip integrated optical control phased array front end system of claim 2, wherein the second integrated OPA transceiver unit (14) comprises: first transmitting OPA power division network (8 1 ) A first transmitting OPA phase shifter array (9 1 ) First transmitting OPA optical antenna array plane (10) 1 ) A second receiving OPA optical antenna array plane (10) 4 ) A second receiving OPA phase shifter array (9 4 ) And a second receiving OPA power division network (8 4 )；
In a transmitting mode, the n-path spatial radio frequency optical signals from the OTTD array (17) sequentially pass through the first transmitting OPA power splitting network (8 1 ) A first transmitting OPA phase shifter array (9 1 ) And a first transmitting OPA optical antenna array plane (10) 1 ) Processing, namely emitting the first N paths of space radio frequency optical signals;
in the receiving mode, the second N paths of spatial radio frequency optical signals sequentially pass through the second receiving OPA optical antenna array surface (10 4 ) A second receiving OPA phase shifter array (9 4 ) And a second receiving OPA power division network (8 4 ) And processing, namely outputting the second N-path waveguide medium radio frequency optical signals.
7. An integrated optical control phased array front-end system without cabling as claimed in claim 6, wherein the first transmitting OPA power splitting network (8 1 ) And a second receiving OPA power division network (8 4 ) All include: a second L×M optical channel;
the first transmitting OPA phase shifter array (9 1 ) And a second receiving OPA phase shifter array (9 4 ) All include: a second L x M thermo-optic phase shifters;
the first transmitting OPA optical antenna array plane (10 1 ) And a second receiving OPA optical antenna array plane (10) 4 ) All include: a second L×M grating optical antennas;
In a transmit mode, the first transmit OPA power division network (8 1 ) Is used for dividing the power of the n paths of radio frequency optical signals from the OTTD array (17) into L multiplied by M paths of optical channels;
the first transmitting OPA phase shifter array (9 1 ) The second l×m thermo-optical phase shifters are configured to perform phase tuning processing on the second l×m optical channel optical signals to complete optical beam deflection;
the first transmitting OPA optical antenna array plane (10 1 ) The second L×M grating optical antennas are used for dividing the second L×M optical channel signals subjected to phase tuning into power to output the first N spatial radio frequency optical signals;
in a receiving mode, the second receiving OPA optical antenna array plane (10 4 ) For receiving the second N-way spatial transmitted by spatial lightThe radio frequency optical signal and outputs a second L multiplied by M optical channel optical signal;
the second receiving OPA phase shifter array (9 4 ) The second L×M thermo-optical phase shifters are used for performing phase tuning processing on the L×M optical channel optical signals so as to complete optical beam deflection;
said second receiving OPA power division network (8 4 ) The L multiplied by M optical channels subjected to phase tuning treatment output the second N waveguide medium radio frequency optical signals.
8. An integrated cableless optically controlled phased array front-end system on a chip according to claim 2, characterized in that the integrated OTTD array (17) comprises: transmitting OTTD array (7) 1 ) And receiving an OTTD array (7 2 )，
In a transmit mode, said n-way radio frequency optical signal from said second on-chip integrated SOA array (13) is transmitted through said transmit OTTD array (7 1 ) Generating N relative delay differences among channels;
in a receiving mode, the second N-way waveguide medium radio frequency optical signal is transmitted through the receiving OTTD array (7 2 ) Resulting in a relative delay difference between the N channels.
9. The integrated cableless optically controlled phased array front-end system of claim 8, wherein,
the transmitting OTTD array (7 1 ) And receiving an OTTD array (7 2 ) All include: a continuous adjustable light delay line structure, an optical switch and an increment adjustment delay line structure,
in a transmit mode, the transmit OTTD array (7 1 ) The continuously adjustable optical delay line structure is used for continuously adjusting the delay of the n paths of radio frequency optical signals; the transmitting OTTD array (7 1 ) For switching the optical switch (7) passing through the transmit OTTD array (7 1 ) The optical path of the n paths of radio frequency optical signals of the continuously adjustable optical delay line structure is switched; the transmitting OTTD array (7 1 ) For passing through said emissionOTTD array (7) 1 ) The n paths of radio frequency optical signals of the continuous adjustable optical delay line structure are transmitted in incremental adjustment delay lines with different lengths to generate quantitative delay adjustment; in a receive mode, the receive OTTD array (7 2 ) The continuously adjustable optical delay line structure is used for continuously adjusting the delay of the radio frequency optical signal of the second N-path waveguide medium; the receiving OTTD array (7 2 ) For switching the optical switch (7) 2 ) The second N-path waveguide medium radio frequency optical signals of the continuously adjustable optical delay line structure are subjected to optical path switching; the receiving OTTD array (7 2 ) Is used to delay the transmission of data through the receiving OTTD array (7 2 ) The second N-path waveguide medium radio frequency optical signals of the continuously adjustable optical delay line structure are transmitted by incremental adjustment delay lines with different lengths, so that quantitative delay adjustment is generated.
10. The integrated, cableless, optically controlled phased array front-end system of claim 9, characterized in that the second integrated, on-chip SOA array (13) comprises: second uplink radio frequency optical signal SOA array (6) 11 ～6 1n ) And a second downstream radio frequency optical signal SOA array (6 41 ～6 4n )，
In the transmit mode, the second upstream radio frequency optical signal SOA array (6 11 ～6 1n ) The amplifying device is used for amplifying n paths of radio frequency optical signals;
in the receive mode, the second downstream radio frequency optical signal SOA array (6 41 ～6 4n ) For transmitting data from said receiving OTTD array (7 2 ) Amplifying the second N-way waveguide medium radio frequency optical signal.
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