Maxim Integrated Products, Inc.
Systems and methods for identifying polarization/quadrature channels in dual-polarization coherent optical transmission

Abstract:

Described are systems and methods for identifying the phase and polarization of independent modulation streams in quadrature channels of a coherent transmission system by using digital code. As a result, phase rotation and polarization of streams that during transmission may have become rotated and swapped around in the channel are correctly labeled and depermuted according to a known and predictable order.