CN112398537A - M-bit optical delayer - Google Patents
M-bit optical delayer Download PDFInfo
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- CN112398537A CN112398537A CN202011465539.6A CN202011465539A CN112398537A CN 112398537 A CN112398537 A CN 112398537A CN 202011465539 A CN202011465539 A CN 202011465539A CN 112398537 A CN112398537 A CN 112398537A
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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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
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Abstract
An m-bit optical delayer and a light-operated phased array multi-beam receiving network belong to the technical field of phased arrays and solve the problems of delay errors and equal wavelength interval limitation caused by non-uniform dispersion coefficients of optical fibers in a dispersion delay mode of dispersion optical fibers; the method realizes the delay control of the multi-wavelength optical carrier through the cascade optical switch and the multi-wavelength division multiplexing and demultiplexing technology, solves the problems of delay error and equal wavelength interval limitation caused by non-uniform optical dispersion coefficient in the dispersion delay mode based on the dispersion optical fiber, and has important application value in a multi-beam light-controlled phased array receiving network.
Description
Technical Field
The invention belongs to the technical field of phased arrays, and particularly relates to an m-bit optical delayer.
Background
The modern phased array radar gradually improves the working frequency along with the change of the requirements of observation objects (space debris, stealth airplanes and the like), the instantaneous working bandwidth is continuously enlarged, particularly in millimeter wave bands, along with the enlargement of the bandwidth, the working requirements of a phased array system cannot be met by the mode of beam scanning of a traditional phase shifter, the development difficulty of millimeter wave band broadband and even ultra-wideband microwave delayers is large, the performance index is poor, the delay amount is small, and the development of a broadband millimeter wave phased array system is seriously hindered.
In recent years, microwave photon technology is widely applied to radar, communication and electronic warfare systems by utilizing the advantages of large optical transmission bandwidth, small loss, light weight, small volume, electromagnetic interference resistance and the like, and becomes a research hotspot in related fields. The light-operated phased array radar adopts a microwave photon technology, and aperture transit time is compensated by a light real-time delay method, so that broadband wide-angle scanning of the phased array radar can be realized.
In various delay schemes, one dispersion effect based on a dispersion fiber carries out delay processing on carriers with different wavelengths, has the characteristics of low cost, easy realization and the like, and is widely applied to a light-operated multi-beam network. But the practical applicability is limited by the defects that the optical carrier wave length needs to be equally spaced, the dispersion coefficient of the dispersion fiber is not uniform, the time delay is not consistent, and the like.
Disclosure of Invention
The invention aims to solve the problems of delay error and limit of equal wavelength interval caused by non-uniformity of dispersion coefficient of optical fiber in a dispersion delay mode of a dispersion optical fiber.
The invention solves the technical problems through the following technical scheme:
an m-bit optical delay, comprising: 1 optical switch 1 x 2, 1 optical switch 2 x 1, (m-1) optical switch 2 x 2, m delay cells; the 1 x 2 optical switch comprises an input end and two output ends, the 2 x 1 optical switch comprises two input ends and an output end, the 2 x 2 optical switch comprises two input ends and two output ends, and the delay unit comprises one input end and one output end; 1 optical switch 1 x 2, (m-1) optical switch 2 x 2 and 1 optical switch 1 x 2 are connected end to form two branches, namely an upper branch and a lower branch; m delay units are respectively connected in series in an upper branch between two adjacent optical switches; each delay unit comprises 1 demultiplexing unit, 1 multiplexing unit and n delay lines with different lengths; the output end of the previous optical switch is connected with the input end of the de-wavelength division multiplexing, the output end of the de-wavelength division multiplexing is connected with the input end of the combined wavelength division multiplexing through n delay lines with different lengths, and the output end of the combined wavelength division multiplexing is connected with the input end of the next optical switch; the optical switch is used for optical path selection, and the input multi-wavelength synthesized optical carrier is selectively input to different delay units or the combination of a plurality of delay units by controlling the states of the 1 x 2 optical switch, the 2 x 1 optical switch and the (m-1) 2 x 2 optical switches, so that different delay paths are formed; wherein m is a positive integer.
As a further improvement of the technical solution of the present invention, the delay unit is configured to perform different delay processes on a multi-wavelength synthesized optical carrier, and the demultiplexing is configured to decompose the multi-wavelength synthesized optical carrier into a multi-channel single-wavelength optical carrier; the wavelength multiplexing is used for synthesizing multi-channel single wavelength optical carriers into a path of synthesized multi-wavelength optical carriers; the n delay lines with different lengths are used for carrying out different delay processing on the light carriers with different wavelengths; when the multi-wavelength synthesized optical carrier passes through the delay unit, the multi-wavelength synthesized optical carrier is divided into a plurality of paths of optical carriers with different wavelengths through wavelength division demultiplexing, then the optical carriers are respectively delayed through a section of delay line with different lengths, and then the optical carriers are synthesized into a path of multi-wavelength synthesized optical carrier through wavelength division multiplexing, so that the delay processing of the multi-wavelength synthesized optical carrier is completed.
As a further improvement of the technical scheme of the invention, the delay among n delay lines with different lengths in each delay unit satisfies an arithmetic progression with a first term of 0, a last term of (n-1) tau and a tolerance of tau, wherein tau is the set delay time and n is a positive integer.
As a further improvement of the technical scheme of the invention, the time delay between the channels corresponding to the time delay units meets the condition that the first term is (n-1) tau and the last term is 2m-1And (n-1) tau, and an equal ratio sequence of a common ratio 2.
As a further improvement of the technical scheme of the invention, the optical switch adopts one of a magneto-optical switch, an electro-optical switch, a mechanical switch, an MEMS switch or a silicon-based integrated switch.
As a further improvement of the technical scheme of the present invention, the wavelengths of the demultiplexing and multiplexing correspond to the wavelengths of the input multi-wavelength synthesized optical carriers one to one.
A light-operated phased array multi-beam receiving network comprises a phased array antenna, a plurality of electro-optical conversions, an optical fiber beam combiner, an optical fiber beam splitter, a plurality of m-bit optical delayers and a plurality of photoelectric conversions; the plurality of electro-optical converters are connected between the phased array antenna and the optical fiber beam combiner, the input end of the optical fiber beam splitter is connected with the output end of the optical fiber beam combiner, and the output end of each optical fiber beam splitter is respectively and sequentially connected with 1 m-bit optical delayer and 1 photoelectric converter in series; the m-bit optical delayer comprises: 1 optical switch 1 x 2, 1 optical switch 2 x 1, (m-1) optical switch 2 x 2, m delay cells; the 1 x 2 optical switch comprises an input end and two output ends, the 2 x 1 optical switch comprises two input ends and an output end, the 2 x 2 optical switch comprises two input ends and two output ends, and the delay unit comprises one input end and one output end; 1 optical switch 1 x 2, (m-1) optical switch 2 x 2 and 1 optical switch 1 x 2 are connected end to form two branches, namely an upper branch and a lower branch; m delay units are respectively connected in series in an upper branch between two adjacent optical switches; each delay unit comprises 1 demultiplexing unit, 1 multiplexing unit and n delay lines with different lengths; the output end of the previous optical switch is connected with the input end of the de-wavelength division multiplexing, the output end of the de-wavelength division multiplexing is connected with the input end of the combined wavelength division multiplexing through n delay lines with different lengths, and the output end of the combined wavelength division multiplexing is connected with the input end of the next optical switch; the optical switch is used for optical path selection, and the input multi-wavelength synthesized optical carrier is selectively input to different delay units or the combination of a plurality of delay units by controlling the states of the 1 x 2 optical switch, the 2 x 1 optical switch and the (m-1) 2 x 2 optical switches, so that different delay paths are formed; wherein m is a positive integer.
As a further improvement of the technical solution of the present invention, the phased array antenna is used for receiving microwave signals; the multi-channel electro-optical conversion converts microwave signals received by the antenna into optical carrier signals with different wavelengths; the optical fiber beam combiner combines multiple paths of light carriers with different wavelengths into one path of light carrier with multiple wavelengths; the optical fiber beam splitter divides one path of multi-wavelength synthetic optical carrier into a plurality of paths of multi-wavelength synthetic optical carriers; the m-bit optical delayer carries out delay processing on each path of synthesized optical carrier; the photoelectric conversion performs photoelectric conversion on the synthesized optical carrier and outputs a microwave signal.
As a further improvement of the technical solution of the present invention, the delay unit is configured to perform different delay processes on a multi-wavelength synthesized optical carrier, and the demultiplexing is configured to decompose the multi-wavelength synthesized optical carrier into a multi-channel single-wavelength optical carrier; the wavelength multiplexing is used for synthesizing multi-channel single wavelength optical carriers into a path of synthesized multi-wavelength optical carriers; the n delay lines with different lengths are used for carrying out different delay processing on the light carriers with different wavelengths; when the multi-wavelength synthesized optical carrier passes through the delay unit, the multi-wavelength synthesized optical carrier is divided into a plurality of paths of optical carriers with different wavelengths through wavelength division demultiplexing, then the optical carriers are respectively delayed through a section of delay line with different lengths, and then the optical carriers are synthesized into a path of multi-wavelength synthesized optical carrier through wavelength division multiplexing, so that the delay processing of the multi-wavelength synthesized optical carrier is completed.
As a further improvement of the technical scheme of the invention, the time delay among n delay lines with different lengths in each delay unit meets the arithmetic difference series with a first term of 0, a last term of (n-1) tau and a tolerance of tau; the time delay between the channels corresponding to the time delay units satisfies that the first term is (n-1) tau and the last term is 2m-1An geometric series of (n-1) τ and 2; wherein tau is the set delay time and n is a positive integer.
The invention has the advantages that:
(1) the invention realizes the delay control of the multi-wavelength optical carrier through the cascade optical switch and the multi-wavelength division multiplexing and demultiplexing technology, can solve the problems of delay error and equal wavelength interval limitation caused by non-uniform dispersion coefficient of the dispersion delay mode based on the dispersion optical fiber, and has important application value in a multi-beam light-controlled phased array receiving network.
(2) The invention abandons the traditional dispersion optical fiber mode, utilizes the structure of wavelength division demultiplexing, delay lines with different lengths and wavelength division multiplexing to replace the dispersion optical fiber, and is beneficial to the realization of the on-chip integration mode at the later stage.
(3) The scheme of the invention utilizes the wavelength division multiplexing, the equal interval length delay line and the wavelength division multiplexer to form a multi-bit delay line delay unit to replace the traditional dispersion optical fiber. Compared with a dispersion optical fiber, the scheme is not limited by the interval of input multiple wavelengths, and any single wavelength optical carrier is subjected to delay processing by using a wavelength demultiplexing and wavelength combining mode, so that the traditional dispersion optical fiber is not used for simultaneously delaying multiple wavelengths, and the dispersion effect of the optical fiber is not used for delaying different optical carriers, so that the delay processing of multiple any wavelengths can be realized.
Drawings
FIG. 1 is a schematic diagram of an m-bit optical retarder;
fig. 2 is a schematic diagram of a phased array multi-beam receiving network employing an m-bit optical delay.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the invention is further described by combining the drawings and the specific embodiments in the specification:
example one
As shown in fig. 1, which is a schematic structural diagram of an m-bit optical delayer according to an embodiment of the present invention, a plurality of optical switches and a plurality of delay units form the m-bit optical delayer, and each delay unit includes a demultiplexing line, a multiplexing line, and a multichannel delay line; the entire module contains 1 optical switch 1 x 2, 1 optical switch 2 x 1 and a plurality of optical switches 2 x 2. The 1 optical switch 1 and the 2 optical switch 2 are respectively positioned at two ends of the time delay device, the 2 optical switches 2 are connected through the time delay units, and the number of the time delay units through which the optical signals pass is controlled by controlling the states of the 1 optical switch 1 and the 2 optical switch 2 to form different time delay paths.
The m-bit delayer inputs n optical carriers with different wavelengths simultaneously, and different paths are gated through the optical switch to form different delays, and the working principle of the delayer is explained by taking the delay unit 1 as an example.
n different wavelength optical carriers pass through the delay unit 1 connected with the optical switch gating by the 1 x 2 optical switch, the 2 x 2 optical switch connected with the delay unit 1 is subjected to cross gating, the subsequent 2 x 2 optical switches are kept in parallel gating, the end 2 x 1 optical switch is gated with one end not connected with the delay unit m, and then the optical carriers passing through the delay unit 1 do not pass through other delay units and are output from the end 2 x 1 optical switch.
When the n wavelength optical carriers pass through the delay unit 1, the n wavelengths are decomposed into n optical carriers with single wavelength by internal de-wavelength division multiplexing, after passing through a delay line with relative delay of tau, the n wavelength optical carriers form a delay amount relative to tau, and are output after the combined wavelength division multiplexing, so that the delay processing of the n wavelength optical carriers is completed. By controlling the state of the optical switch, the optical carrier passes through different delay units or a plurality of delay units, thereby forming different relative delay amounts among n wavelengths and achieving the switching function of the relative delay amounts.
The optical switch can be a magneto-optical switch, an electro-optical switch, a mechanical switch, a MEMS switch or a silicon-based integrated switch, and comprises a 1 x 2 optical switch, a 2 x 1 optical switch and a 2 x 2 optical switch;
the delay unit comprises a wavelength division multiplexing unit, a multichannel delay line and a wavelength division multiplexing unit, wherein the wavelengths of the wavelength division multiplexing unit and the wavelength division multiplexing unit correspond to the carrier wavelengths of the input multi-wavelength light one by one.
The optical switch is used for optical path selection, and the multi-wavelength synthesized optical carrier input to the delayer is selected and input to different delay units or the combination of a plurality of delay units; the delay unit is used for carrying out different delay processing on different optical carriers and comprises a de-wavelength division multiplexing line, a combined wavelength division multiplexing line and a multi-channel delay line. When the multi-wavelength synthesized optical carrier passes through the delay unit, the multi-wavelength synthesized optical carrier is divided into a plurality of paths of optical carriers with different wavelengths through wavelength division demultiplexing, then the optical carriers are respectively delayed through a section of delay line with different length, and then the optical carriers are synthesized into a path of multi-wavelength optical carrier through wavelength division multiplexing, so that the delay processing process of the multi-wavelength optical carrier is completed.
The delay of each channel in each delay unit is an arithmetic progression, and the delay of the corresponding channel between the delay units is an arithmetic progression with 2 as a common ratio, namely the delay of each channel corresponding to the delay unit 1 is 0, tau, 2 tau, 3 tau, …, (n-1) tau; the time delay of each channel corresponding to the time delay unit m is 0, 2m-1τ，…，2m-1*(n-1)τ。
As shown in fig. 2, a schematic diagram of an optically controlled phased array multi-beam receiving network according to an embodiment of the present invention includes the following components: the system comprises a phased array antenna, electro-optic conversion, an optical fiber beam combiner, an optical fiber beam splitter, an m-bit optical delayer and photoelectric conversion; the multiple electro-optical conversions are connected between the phased array antenna and the optical fiber beam combiner, the input end of the optical fiber beam splitter is connected with the output end of the optical fiber beam combiner, and the output end of each optical fiber beam splitter is respectively and sequentially connected with 1 m-bit optical delayer and 1 electro-optical conversion in series.
The phased array antenna is used for receiving microwave signals; the multichannel electro-optical conversion converts microwave signals received by an antenna into optical carrier signals with different wavelengths; the optical fiber beam combiner combines multiple paths of light carriers with different wavelengths into one path of light carrier with multiple wavelengths; the optical fiber beam splitter divides one path of synthesized multi-wavelength optical carrier into multiple paths of synthesized multi-wavelength optical carriers; the m-bit optical delayer carries out delay processing on each path of synthesized optical carrier; the photoelectric conversion performs photoelectric conversion on the synthesized optical carrier and outputs a microwave signal.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An m-bit optical delay, comprising: 1 optical switch 1 x 2, 1 optical switch 2 x 1, (m-1) optical switch 2 x 2, m delay cells; the 1 x 2 optical switch comprises an input end and two output ends, the 2 x 1 optical switch comprises two input ends and an output end, the 2 x 2 optical switch comprises two input ends and two output ends, and the delay unit comprises one input end and one output end; 1 optical switch 1 x 2, (m-1) optical switch 2 x 2 and 1 optical switch 1 x 2 are connected end to form two branches, namely an upper branch and a lower branch; m delay units are respectively connected in series in an upper branch between two adjacent optical switches; each delay unit comprises 1 demultiplexing unit, 1 multiplexing unit and n delay lines with different lengths; the output end of the previous optical switch is connected with the input end of the de-wavelength division multiplexing, the output end of the de-wavelength division multiplexing is connected with the input end of the combined wavelength division multiplexing through n delay lines with different lengths, and the output end of the combined wavelength division multiplexing is connected with the input end of the next optical switch; the optical switch is used for optical path selection, and the input multi-wavelength synthesized optical carrier is selectively input to different delay units or the combination of a plurality of delay units by controlling the states of the 1 x 2 optical switch, the 2 x 1 optical switch and the (m-1) 2 x 2 optical switches, so that different delay paths are formed; wherein m is a positive integer.
2. An m-bit optical delay as claimed in claim 1, wherein the delay unit is configured to perform different delay processes on the multi-wavelength synthesized optical carrier, and the demultiplexing is configured to decompose the multi-wavelength synthesized optical carrier into multi-channel single-wavelength optical carriers; the wavelength multiplexing is used for synthesizing multi-channel single wavelength optical carriers into a path of synthesized multi-wavelength optical carriers; the n delay lines with different lengths are used for carrying out different delay processing on the light carriers with different wavelengths; when the multi-wavelength synthesized optical carrier passes through the delay unit, the multi-wavelength synthesized optical carrier is divided into a plurality of paths of optical carriers with different wavelengths through wavelength division demultiplexing, then the optical carriers are respectively delayed through a section of delay line with different lengths, and then the optical carriers are synthesized into a path of multi-wavelength synthesized optical carrier through wavelength division multiplexing, so that the delay processing of the multi-wavelength synthesized optical carrier is completed.
3. An m-bit optical delayer according to claim 1, characterized in that the delay between n delay lines of different lengths inside each delay cell satisfies an arithmetic series of a first term of 0, a last term of (n-1) τ, and a tolerance of τ, where τ is the set delay time and n is a positive integer.
4. An m-bit optical delay as claimed in claim 1, wherein the delay between the channels corresponding to the delay units satisfies the first term (n-1) τ and the last term 2m-1And (n-1) tau, and an equal ratio sequence of a common ratio 2.
5. An m-bit optical delay as claimed in claim 1, wherein the optical switch is one of a magneto-optical switch, an electro-optical switch, a mechanical switch, a MEMS switch, or a silicon-based integrated switch.
6. An m-bit optical delay as claimed in claim 1 wherein the wavelengths of the de-wavelength division multiplexing and the wavelength division multiplexing correspond one-to-one to the wavelengths of the incoming multi-wavelength composite optical carriers.
7. A light-operated phased array multi-beam receiving network is characterized by comprising a phased array antenna, a plurality of electro-optical converters, an optical fiber beam combiner, an optical fiber beam splitter, a plurality of m-bit optical delayers and a plurality of photoelectric converters; the plurality of electro-optical converters are connected between the phased array antenna and the optical fiber beam combiner, the input end of the optical fiber beam splitter is connected with the output end of the optical fiber beam combiner, and the output end of each optical fiber beam splitter is respectively and sequentially connected with 1 m-bit optical delayer and 1 photoelectric converter in series; the m-bit optical delayer comprises: 1 optical switch 1 x 2, 1 optical switch 2 x 1, (m-1) optical switch 2 x 2, m delay cells; the 1 x 2 optical switch comprises an input end and two output ends, the 2 x 1 optical switch comprises two input ends and an output end, the 2 x 2 optical switch comprises two input ends and two output ends, and the delay unit comprises one input end and one output end; 1 optical switch 1 x 2, (m-1) optical switch 2 x 2 and 1 optical switch 1 x 2 are connected end to form two branches, namely an upper branch and a lower branch; m delay units are respectively connected in series in an upper branch between two adjacent optical switches; each delay unit comprises 1 demultiplexing unit, 1 multiplexing unit and n delay lines with different lengths; the output end of the previous optical switch is connected with the input end of the de-wavelength division multiplexing, the output end of the de-wavelength division multiplexing is connected with the input end of the combined wavelength division multiplexing through n delay lines with different lengths, and the output end of the combined wavelength division multiplexing is connected with the input end of the next optical switch; the optical switch is used for optical path selection, and the input multi-wavelength synthesized optical carrier is selectively input to different delay units or the combination of a plurality of delay units by controlling the states of the 1 x 2 optical switch, the 2 x 1 optical switch and the (m-1) 2 x 2 optical switches, so that different delay paths are formed; wherein m is a positive integer.
8. An optically controlled phased array multi-beam receive network as claimed in claim 7 wherein said phased array antenna is adapted to receive microwave signals; the multi-channel electro-optical conversion converts microwave signals received by the antenna into optical carrier signals with different wavelengths; the optical fiber beam combiner combines multiple paths of light carriers with different wavelengths into one path of light carrier with multiple wavelengths; the optical fiber beam splitter divides one path of multi-wavelength synthetic optical carrier into a plurality of paths of multi-wavelength synthetic optical carriers; the m-bit optical delayer carries out delay processing on each path of synthesized optical carrier; the photoelectric conversion performs photoelectric conversion on the synthesized optical carrier and outputs a microwave signal.
9. The optically controlled phased array multibeam receiving network of claim 7, wherein said delay unit is configured to perform different delay processing on the multi-wavelength synthesized optical carrier, and said demultiplexing is configured to decompose the multi-wavelength synthesized optical carrier into multi-channel single wavelength optical carriers; the wavelength multiplexing is used for synthesizing multi-channel single wavelength optical carriers into a path of synthesized multi-wavelength optical carriers; the n delay lines with different lengths are used for carrying out different delay processing on the light carriers with different wavelengths; when the multi-wavelength synthesized optical carrier passes through the delay unit, the multi-wavelength synthesized optical carrier is divided into a plurality of paths of optical carriers with different wavelengths through wavelength division demultiplexing, then the optical carriers are respectively delayed through a section of delay line with different lengths, and then the optical carriers are synthesized into a path of multi-wavelength synthesized optical carrier through wavelength division multiplexing, so that the delay processing of the multi-wavelength synthesized optical carrier is completed.
10. The optically controlled phased array multi-beam receiving network of claim 7, wherein the delay between n delay lines of different lengths in each delay cell satisfies an arithmetic series of a first term of 0, a last term of (n-1) τ, and a tolerance of τ; the time delay between the channels corresponding to the time delay units satisfies that the first term is (n-1) tau and the last term is 2m-1An geometric series of (n-1) τ and 2; wherein tau is the set delay time and n is a positive integer.
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| CN103941235A (en) * | 2014-02-26 | 2014-07-23 | 上海交通大学 | Full-optical-control phased-array radar transmitter |
| CN104316908A (en) * | 2014-10-08 | 2015-01-28 | 上海航天电子通讯设备研究所 | Optically controlled phased array radar front end transmitting and receiving method and device |
| CN111123219A (en) * | 2019-12-27 | 2020-05-08 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Ultra-wideband dense interference signal generation system and method based on optical wavelength division multiplexing |
| 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 |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941235A (en) * | 2014-02-26 | 2014-07-23 | 上海交通大学 | Full-optical-control phased-array radar transmitter |
| CN104316908A (en) * | 2014-10-08 | 2015-01-28 | 上海航天电子通讯设备研究所 | Optically controlled phased array radar front end transmitting and receiving method and device |
| CN111123219A (en) * | 2019-12-27 | 2020-05-08 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Ultra-wideband dense interference signal generation system and method based on optical wavelength division multiplexing |
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Application publication date: 20210223 |