A 110-GHz-Bandwidth 2:1 AMUX-Driver using 250-nm InP DHBTs for Beyond-1-Tb/s/carrier Optical Transmission Systems

Abstract

This paper presents the first ultra-broadband 2:1 analog multiplexer (AMUX) monolithically integrated with an optical modulator driver with the record bandwidth using 250-nm InP double heterojunction bipolar transistors (DHBTs). The fabricated driver-integrated AMUX (AMUX-Driver) IC has a data-path bandwidth of over 110 GHz and a data-path gain of 10.5 dB. A 160-GBaud-class baseband signal generation has been achieved by using this AMUX-Driver IC. In addition, a compact integrated optical front-end module with a 6-dB electro-optic (EO) bandwidth of 80 GHz, incorporating the AMUX-Driver ICs and an InP-based optical I/Q modulator, has been developed. We have successfully demonstrated a beyond-1-Tb/s/carrier optical modulation based on 168-GBaud polarization division multiplexed (PDM) 16-ary quadrature amplitude modulation (16-QAM) by using this integrated module.