Nonlinear optical signal processing for Tbit/s ethernet applications

Abstract

We review recent experimental demonstrations of Tbaud optical signal processing. In particular, we describe a successful 1.28Tbit/s serial data generation based on single polarization 1.28Tbaud symbol rate pulses with binary data modulation (OOK) and subsequent all-optical demultiplexing. We also describe the first error-free 5.1Tbit/s data generation and demodulation based on a single laser, where a 1.28Tbaud symbol rate is used together with quaternary phase modulation (DQPSK) and polarization multiplexing. The 5.1Tbit/s data signal is all-optically demultiplexed and demodulated by direct detection in a delay-interferometer-balanced detector-based receiver, yielding a BER less than 10-9. We also present subsystems making serial optical Tbit/s systems compatible with standard Ethernet data for data centre applications and present Tbit/s results using, for instance silicon nanowires.