Down-Conversion of Microwave Optoelectronic Signals in a GaAs Microstrip Ring Resonator

Abstract

We report the mixing performance of a GaAs microstrip ring resonator in which a Schottky photodetector is monolithically integrated in a coupling gap. A spectrum of down-conversion between an optically modulated RF signal and an independently applied LO (Local Oscillator) signal is demonstrated and the system conversion loss of RF to IF (Intermediate Frequency) is measured as a function of LO frequency and compared with other data.