title: Performance analyses of polarization demultiplexing based on constant-modulus algorithm in digital coherent optical receivers.
abstract: In the digital coherent optical receiver, we can achieve polarization demultiplexing in the digital domain, using a two-by-two matrix controlled by the constant-modulus algorithm (CMA). In this paper, after elucidating the physics behind CMA for polarization demultiplexing, we discuss the performance limit of CMA-based polarization demultiplexing through computer simulations. The method of improving its performance is also demonstrated.
authors.affiliation: Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Tokyo 113-8656, Japan. kikuchi@ginjo.t.u-tokyo.ac.jp
authors.forename: Kazuro
authors.initials: K
authors.lastname: Kikuchi