20-channel optoelectronic receiver for free-space optical interconnection

We will report on the construction of a 20-channel optical receiver array for use at 0.9 to 1.55 micron wavelengths for free space communication within computer systems. The receiver array will operate in conjunction with a 980 nm laser array to provide 20 Channels of lGbit/sec data transfer. To meet these requirements we have produced GaAs HBT receiver circuits 1 with flip-chip bonded InGaAs PIN detector arrays mounted directly on top.