Open AccessElectronic polarization-division demultiplexing based on digital signal processing in intensity-modulation direct-detection optical communication systems
Author(s) -
K. Kikuchi
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.001971
Subject(s) - digital signal processing , multiplexing , optics , intensity modulation , signal processing , polarization (electrochemistry) , polarization division multiplexing , modulation (music) , computer science , physics , phase modulation , telecommunications , computer hardware , phase noise , chemistry , acoustics
We propose a novel configuration of optical receivers for intensity-modulation direct-detection (IM · DD) systems, which can cope with dual-polarization (DP) optical signals electrically. Using a Stokes analyzer and a newly-developed digital signal-processing (DSP) algorithm, we can achieve polarization tracking and demultiplexing in the digital domain after direct detection. Simulation results show that the power penalty stemming from digital polarization manipulations is negligibly small.