InP DHBT Mux-Drivers for Very High Symbol Rate Optical Communications

This paper reports on very high speed large swing drivers suitable for the generation of high symbol rate spectrally efficient optical transmission signals. To accommodate available data rate, these circuits integrate multiplexing stages. Fabricated using our InP DHBT technology (F_T and F_MAX >300 GHz, BV_CE0 ~5 V), these circuits include NRZ and Multi-Level drivers; they have been used to generate OOK, QPSK and QAM signals in optical transmission experiments at bitrates beyond 100 Gbps.