Development of a Microwave Receiving and Transmission System using an Optical Modulator

This article describes the development and construction of an evolutional SHF band signal receiving and transmission system using an optical modulator that operates via a faint signal in the 3.4GHz band. The modulator is a LiNbO/sub 3/ optical modulator of Mach-Zehnder type, which can be used to modulate a light beam at 1.5 /spl mu/m with FM signals at 3.4GHz band and a voltage level of 60dB/spl mu/V from a receiving antenna. Performance was satisfactory.