15 GBPS MUX/DMUX implemented with AlGaAs/GaAs HBTs

Abstract

AlGaAs/GaAs HBTs with improved high speed performance by a self-alignment technology and a new layer structure have been applied to fabricate monolithic integrated multiplexer (MUX) and demultiplexer (DMUX') circuits. The maximum operation speeds of the MUX and DMUX were 15 Gbps and 19 Gbps, respectively. To the anthers' knowledge, this is the highest speed in MUX and DMUX ICs ever reported.