A versatile all-optical modulator based on nonlinear Mach-Zehnder interferometers

摘要

A device based on a Nonlinear Mach-Zehnder interferometer (NMI) which exploits cross-phase modulation of two co-propagating modes in bimodal branches has been described in this paper. The advantage of this device is that it becomes polarisation independent while keeping phase insensitive by using different propagation constants of the modes of the bimodal branches.