INTEGRATED GAIN BLOCK AND MODULATOR FOR HYBRID CAVITY LASER DEVICE

摘要

A semiconductor optoelectronic device comprises a gain section (21) and a modulator section (25) formed on a common substrate. The device further comprises a reflector (20) arranged to reflect light emerging from the gain section (21) back into the gain section (21), and a coupler (23) associated with the reflector (20) and arranged to couple a proportion of the light from the gain section (21) into the modulator section (25). The device provides a compact arrangement in which the modulator and the gain section are already aligned.