An optical transceiver using offset sideband modulation

This paper discusses the development of an integrated transceiver for fiber to the home applications. One of the major challenges in building an integrated transceiver is minimizing the crosstalk between the high powered laser driver for the upstream signal, and the sensitive transimpedance amplifier for the downstream signal. The system described in this paper uses a novel modulation scheme called offset sideband modulation (OSBM) for the downstream signal such that the received electrical signal is an RF bandpass signal which does not interfere with the baseband signal that generates the upstream signal. The transceiver architecture is discussed, and simulation results are presented for a number of the system components.