TRT Analysis on Optically Controlled Semiconductor Filled Millimeter Waveguide

Abstract

Currently optical microwave interactions are attracting considerable interest and optically controlled microwave and millimeter wave devices and circuits have been reported. In this paper the possibility of optically controlling the millimeter wave propagation has been analyzed. The metallic rectangular millimeter waveguide partially loaded with light sensitive semiconductor material has been theoretically analyzed by Transverse Resonance Technique (TRT). The variations of resonant frequency, phase shift, attenuation and the quality factor with the optically induced plasma density have been numerically estimated, and the results are discussed. These optically controlled devices find applications in optically controlled phase shifters in phased array antennas, resonators, modulators, and switches.