Microwave Photonic Channelized Receiver and Multi-band Frequency Conversion System Based on OFC

Abstract

A novel microwave photonic channelized receiver and multi-band frequency conversion system based on optical frequency comb (OFC) is proposed and demonstrated. In the proposed scheme, the RF signal is modulated by a polarization modulator to generate 6-line OFC on the upper branch, and the microwave signal is modulated by the polarization modulator to generate ±st order sidebands on the lower branch. The upper and lower signals are coupled by an optical coupler and channelized by a wavelength division multiplexer to realize instantaneous frequency measurement and multi-band frequency conversion of microwave signals. The result shows that microwave signals from 0GHz to 29GHz can be measured by adjusting the comb spacing to 10GHz. When the microwave signal is 22GHz, the frequency conversion of microwave signal can also be completed by this system after the completion of frequency measurement, and it can be down-converted to 1.98GHz (L band), 8.05GHz (X band), 18.05GHz (K band) and can be up-converted to 28.05GHz (Ka band), 38.05GHz (Ka band), 48.05GHz (U band).