Ultra-high-speed all-optical multivalued inverter using nonlinear polarization rotation in semiconductor optical amplifier

摘要

Abstract In this communication, we have introduced a new thought of designing all-optical binary and multivalued inverters using a single semiconductor optical amplifier (SOA) at a speed more than 300Gbps. The operation of this inverter is based on the nonlinear polarization rotation (NPR) effect in SOA. The quality factor (Q?~?38.3?dB for binary, 46.6?dB for ternary and 41.5?dB for quaternary inverter), extinction ratio (ER?~?43?dB for binary, 40?dB for ternary and 39?dB for quaternary inverter), contrast ratio (CR?~?46.5?dB for binary, 46.5?dB for ternary and 45?dB for quaternary inverter), and relative eye penning (REO?~?96 for binary inverter, 92 for ternary inverter, and 87 for quaternary inverter) have been calculated. The single-SOA inverter can solve the operational delay and noise-related problem of a design by reducing the hardware complexity. The circuit shows some useful values of Q factor (>?10?dB) and other performance-related matrices even in an ultra-high speed (100Gbps or more).