A self-coherent receiver for detection of PolMUX coherent signals

作者：Li Jingshi^*; Schmogrow Rene; Hillerkuss David; Schindler Philipp C; Nazarathy Moshe; Schmidt Langhorst Carsten; Ezra Shalva Ben; Tselniker Igor; Koos Christian; Freude Wolfgang; Leuthold Juerg

来源：Optics Express, 2012, 20(19): 21413-21433.

DOI：10.1364/OE.20.021413

A self-coherent receiver capable of demultiplexing PolMUX-signals without an external polarization controller is presented. Training sequences are introduced to estimate the polarization rotation, and a decision feedback recursive algorithm mitigates the random walk of the recovered field. The concept is tested for a PolMUX-DQPSK modulation format where one polarization carries a normal DQPSK signal while the other polarization is encoded as a progressive phase-shift DQPSK signal. An experimental demonstration of the scheme for a 112 Gbit/s PolMUX-DQPSK signal is presented.

• 出版日期2012-9-10