Optical receiver array in silicon bipolar technology with selfaligned, low parasitic III/V detectors for DC-1 Gbit/s parallel links

A 1 × 8 element III-V photodetector/silicon bipolar circuit receiver array has been fabricated using a selfaligning, low parasitic, flipchip solder bond hybridisation process. Receiver elements operate at data rates up to 1 Gbit/s with an input sensitivity of −23dBm at 1.3μm wavelength, and with negligible interchannel crosstalk. An overall delay of 1.5 ns was measured between optical input and digital output.