Efficient microwave photon channelization receiving method

Abstract

The invention discloses an efficient microwave photon channelization receiving method, and relates to the technical field of microwaves and the technical field of optical communication. The method isas shown in figure 1 in the specification, and a laser, a Mach-Zehnder modulator, a dual-parallel Mach-Zehnder modulator, a dual-polarization Mach-Zehnder modulator, a polarization controller, an erbium-doped fiber optical amplifier, a wavelength division multiplexer, a dual-polarization 90-degree optical coupler, a balance photoelectric detector, an electric 90-degree coupler and an electric band-pass filter are included. A plurality of radio frequency signals are copied through polarized orthogonal radio frequency optical combs, local oscillator optical combs and corresponding radio frequency copies are subjected to frequency mixing, the positions and intervals of the two sets of optical combs and the wavelength division multiplexer are controlled, and channelized receiving of broadbandsignals can be achieved through a mirror image suppression demodulation module. According to the invention, the problems of complex system and serious crosstalk in a photon filter bank scheme are overcome, the technical difficulty that multi-comb lines and large-interval optical combs are difficult to generate in a conventional double-optical-comb scheme is overcome, and the method has potential application value in the fields of investigation, radars and the like.

Description

technical field [0001] The invention relates to the technical field of optical communication and microwave technology, and mainly relates to realizing channelized reception of broadband signals by using photonics technology. Background technique [0002] With the continuous development of electronic warfare and communication environments, adaptive communication systems, electronic reconnaissance, countermeasures, and radar systems, wireless spectrum measurement and analysis in the broadband range has become increasingly important. A real-time, high-resolution spectrum monitoring system can detect the enemy's situation in time and accurately, and take the lead in electronic warfare. Although the use of digital or analog filter bank technology has been able to achieve channelized reception of signals, but limited by the bandwidth limitation of analog-to-digital conversion and the electronic bottleneck of current electronic devices, in order to achieve channelized reception of ...

AI Technical Summary

Problems solved by technology

However, the early channelization reception scheme based on dual-comb image suppression has low utilization rate of RF replication, and the number of sub-channels is the same as the number of RF signal replication

At the same time, large intervals and multi-comb lines are required for RF and local oscillator combs, which is difficult to produce; complex configuration and high cost

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