title: A self-coherent receiver for detection of PolMUX coherent signals.
abstract: 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.
authors.affiliation: Institute of Photonics and Quantum Electronics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany. jingshi.li@kit.edu
authors.forename: Jingshi
authors.initials: J
authors.lastname: Li
authors.forename: Rene
authors.initials: R
authors.lastname: Schmogrow
authors.forename: David
authors.initials: D
authors.lastname: Hillerkuss
authors.forename: Philipp C
authors.initials: PC
authors.lastname: Schindler
authors.forename: Moshe
authors.initials: M
authors.lastname: Nazarathy
authors.forename: Carsten
authors.initials: C
authors.lastname: Schmidt-Langhorst
authors.forename: Shalva-Ben
authors.initials: SB
authors.lastname: Ezra
authors.forename: Igor
authors.initials: I
authors.lastname: Tselniker
authors.forename: Christian
authors.initials: C
authors.lastname: Koos
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Freude
authors.forename: Juerg
authors.initials: J
authors.lastname: Leuthold