Electrical/optical frequency hopping carrier generator based on photon technology

Abstract

The invention provides an electric / optical frequency hopping carrier generator based on a photon technology. The generator comprises a laser source, a first polarization controller, a polarization modulator, a digital control signal, a second polarization controller, an optical circulator, a polarization beam splitter, a third polarization controller, a first Mach-Zehnder modulator, a second Mach-Zehnder modulator, a microwave modulation signal, a microwave modulation signal, a polarization analyzer and a photoelectric detector. The polarization switch structure is used for controlling the polarization state of the optical signal; the Sagnac ring structure is used for performing different modulation on optical signals in different polarization states; and finally, an electric / optical frequency hopping carrier wave can be obtained by adjusting a digital control signal of the polarization switch structure. In addition, by adjusting the microwave modulation signal frequency of the Mach-Zehnder modulator, the frequency of the electric / optical frequency hopping carrier can be flexibly tuned. The method is flexible in control and simple in structure, and can be applied to important fields such as radars, electronic warfare and wireless communication systems.

Description

technical field [0001] The invention belongs to the technical fields of microwave photonics and microwave signal generation, and in particular relates to an electrical / optical frequency-hopping carrier generator based on photon technology. Background technique [0002] Microwave frequency hopping signals are widely used in wireless communication, radar detection, electronic warfare and other application scenarios. However, due to the existence of electronic bottlenecks, the frequency hopping bandwidth (~100 MHz) and operating frequency band (~GHz) generated by traditional electrical methods are limited. To achieve high-frequency broadband microwave frequency hopping signal generation, multi-stage frequency multiplication and frequency conversion are required. , greatly increasing the volume, weight, power consumption, cost of the entire system and deteriorating the signal quality. In addition, the frequency hopping rate is relatively slow (kHz order), and even the frequency...

AI Technical Summary

Problems solved by technology

[0004] The above schemes all have certain limitations: the two frequencies of the frequency hopping carrier obtained by scheme (1) have a fixed double frequency relationship, which cannot be tuned flexibly; the signal modulation rate, hopping Frequency rate, working bandwidth, etc. are limited by directly modulated lasers or tunable filters, and the stability is easily affected by the environment

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