160-Gb/s polarization insensitive all-optical demultiplexing using a gain-transparent ultrafast nonlinear interferometer (GT-UNI)

We report on a polarization-insensitive all-optical demultiplexer based on gain-transparent operation of a semiconductor optical amplifier in an ultrafast nonlinear interferometer (GT-UNI) using polarization diversity. Error-free demultiplexing from 160 to 10 Gb/s is demonstrated.