High gain and very sensitive photonic switching device is developed by integrating directly and vertically a hetero-junction phototransistor and a laser diode. The device switches on with a very low input power of -10nW and emits output power of -4mW under continuous wave condition. The minimum switching energy is estimated to be as low as 8OfJ.
This article is from 'OSA Proceedings of the International Topical Meeting on Photonic Switching Held in Salt Lake City, Utah on 6-8 March 1992. Volume 8,' AD-A253 026, p264 thru p267.