A 40-Gbit/s monolithic digital OEIC composed of uni-traveling-carrier photodiode and InP HEMT decision circuit

摘要

This paper presents a digital OEIC that is a monolithic combination of a uni-traveling-carrier photodiode (UTC-PD) and 0.1-μm InAlAs/InGaAs/InP HEMT decision circuit for broadband optical fiber communication systems. The fabricated chip is packaged as an OEIC module, and 40 Gbit/s error-free operation is confirmed for an RZ data stream at the clock rate of 40 GHz. The bit-error-performances of an optical receiver consisting of erbium doped fiber amplifiers and the OEIC module is also examined. The receiver sensitivity of -24.1 dBm is obtained for a 40-Gbit/s RZ optical signal.