Integrated 460 GHz photonic transmitter module

A photonic sub-millimetre (sub-nim) wave transmitter module has been develo ped and fabricated. The module consists of a 1.55 mum waveguide InP photode tector monolithically integrated with a planar full wave slot antenna and p assive lowpass filter for DC bias supply. For the first time, optical heter odyne 460 GHz sub-mm signal generation is demonstrated, It is further shown that the module can effectively replace the classical solid-state oscillat or of an astronomical superconductor-insulator-superconductor heterodyne re ceiver. The module generates sufficient sub-mm wave power to operate the re ceiver under optimum conditions.