On chip broadband microwave photonics phase shifter based on the coupling-modulated microring resonator

Abstract

We propose a microwave photonics phase shifter which utilizes a coupling-modulated microring resonator (CMR) with interleaved p-n junctions. The transmission response of the CMR can be tuned by changing the effect coupling factor through applying bias voltage on the feedback arm. Finally, 1 V bias voltage is chosen to apply on the CMR. A microwave photonics phase shifter with phase shift range of 120 degree from 15 GHz to 40 GHz and the RF power variation less than 5 dBm is realized.