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A Microwave Photonic Transceiver Based on Coherent Optical Frequency Comb

A technology of microwave photonics and transceivers, which is applied in the field of microwave photonics technology and optical communication, can solve problems such as limited instantaneous processing bandwidth, achieve large real-time processing bandwidth, large dynamic range, and reduce system power consumption

Active Publication Date: 2019-05-31
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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AI Technical Summary

Problems solved by technology

The demodulation of the signal still requires digital signal processing means, so the instantaneous processing bandwidth is very limited
Secondly, because useful information must be extracted through digital signal processing, in practical applications, the digital signal processors of all channels must be in working state at all times, and the problem of power consumption is very prominent

Method used

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  • A Microwave Photonic Transceiver Based on Coherent Optical Frequency Comb
  • A Microwave Photonic Transceiver Based on Coherent Optical Frequency Comb
  • A Microwave Photonic Transceiver Based on Coherent Optical Frequency Comb

Examples

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] The schematic diagram of the microwave photon receiver device of the present invention is as figure 1 As shown, it includes a seed light source module, a receiver, and a transmitter. The seed light source module includes a signal optical frequency comb, a local oscillator optical frequency comb, a first beam splitter, and a second beam splitter. The transmitter includes a demultiplexing module. The first to the nth dual-parallel Mach-Zehnder modulator (dual-parallel Mach-Zehndermodulator, DPMZM), multiplexing module, multiplexer and photodetector (photodetector, PD), the receiver includes the n+1th dual-parallel Mach-Zehnder modulator Del modulator, optical mixer, first optical processor, second optical processor, coherent processing module, the signal optical frequency comb in the seed light source module is divided into two paths by the first beam splitter, an...

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Abstract

The invention discloses a microwave photonic transceiver based on coherent optical frequency combs. A signal optical frequency comb and a local oscillator optical frequency comb which are coherent are generated through a seed light source module and are each divided into two paths through two beam splitters; for a transmitting module, one path of the signal optical frequency comb is taken and each comb tooth is separated through a de-multiplexing module, a to-be-transmitted intermediate frequency signal is loaded through electro-optical modulation, the modulated signal optical frequency comb and one path of the local oscillator optical frequency comb are combined, and a high-frequency transmitting signal is obtained through photo-electric detection; for a receiving module, the other path of the signal optical frequency comb directly loads a receiving signal through an electro-optical modulator and sends the receiving signal to a signal light input end of an optical mixer, the other path of the local oscillator optical frequency comb is input into a local oscillator light input end of the same optical mixer, and two paths of orthogonal output light signals of the optical mixer are taken to carry out channel cut and coherent detection respectively. The microwave photonic transceiver disclosed by the invention has large real-time processing bandwidth and large dynamic range, and the system consumption is effectively reduced.

Description

technical field [0001] The invention relates to a microwave transceiver, in particular to a photon microwave transmission and channelized reception technology based on a coherent optical frequency comb, belonging to the fields of microwave photon technology and optical communication technology. Background technique [0002] The main function of the microwave transceiver is to realize the transmission and reception of signals, and it is an important part of radar, communication, electronic warfare and other systems. As the working bandwidth of electronic systems is increasing day by day, the channelization processing method has become a relatively effective and mature solution. The signal processing is simplified to multiple narrowband signal processing, thereby reducing the pressure on microwave components, digital signal processing modules, etc., and ensuring a better processing effect, but because the traditional microwave processing technology based on electronic technolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/40H04B10/516H04B10/61H04B10/80
CPCH04B10/40H04B10/516H04B10/61H04B10/80
Inventor 潘时龙唐震宙朱丹
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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