Multi-channel broadband microwave optical transmission link transmitter phase stabilization device

Abstract

The invention provides a multi-channel broadband microwave optical transmission link transmitter phase stabilizing device. The multi-channel broadband microwave optical transmission link transmitter phase stabilizing device comprises an optical transmission link, a phase measurement pilot frequency link, a delay measurement pilot frequency link and a controller; the optical transmission link splits a multiplexed light signal of an input light signal, a first light signal and a second light into multiple split light signals to achieve multi-channel transmission, wherein the first light signal and the second light signal are provided by the phase measurement pilot frequency link and the delay measurement pilot frequency link respectively; each split light signal is transmitted to a receivingpart along an optical fiber corresponding to the channel, the input light signals in the split light signals at the receiving parts are output as output light signals, and the first light signals andthe second light signals in the split light signals are fed back to the phase measurement pilot frequency link and the delay measurement pilot frequency link respectively, so that the phase measurement pilot frequency link and the delay measurement pilot frequency link measure phase differences and time differences of the various channels respectively; and the controller controls a phase compensation module to adjust the phases of the light signals of the various channels according to time difference measurement results and phase difference measurement results.

Description

technical field [0001] The invention belongs to the field of microwave optical transmission, in particular to a multi-channel broadband microwave optical transmission link transmitter phase stabilization device. Background technique [0002] Due to the advantages of broadband, low loss, flexible distribution, anti-interference and low weight, microwave optical transmission technology is very suitable for the transmission and distribution of radio frequency signals, especially broadband high frequency signals. Remote control, phased array sub-array, etc. have broad application prospects. In these applications, ensuring the phase stability of a single-channel microwave optical transmission link and the phase consistency between multiple channels is one of the key technologies to realize system functions. However, the optical transmission medium optical fiber is affected by the external environment (temperature, vibration, etc.), which will cause the equivalent length of the o...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a multi-channel broadband microwave optical transmission link transmitter phase stabilization device to solve the problem that the current phase stabilization technology cannot realize multi-channel broadband microwave optical phase stabilization transmission

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