title: Effect of PDL-induced coherent crosstalk on polarization-division-multiplexed direct-detection systems.
abstract: We analyze the effect of polarization-dependent loss (PDL) on the performance of the polarization-division-multiplexed (PDM) signals in direct-detection systems. We present the theoretical analysis of the sensitivity penalty caused by PDL-induced coherent crosstalk and compare the results with experimental data obtained by using a simple variable PDL emulator based on a LiNbO3 Mach-Zehnder modulator. Also presented is the performance degradation caused by the polarization misalignment between the received signals and the polarization beam splitter at the receiver in the presence of PDL.
authors.affiliation: Department of Electrical, Electronics and Information Engineering, Osaka University, Suita, Osaka, Japan. hcji5002@gmail.com
authors.forename: Ho-Chul
authors.initials: HC
authors.lastname: Ji
authors.forename: J H
authors.initials: JH
authors.lastname: Lee
authors.forename: Hoon
authors.initials: H
authors.lastname: Kim
authors.forename: Paul K J
authors.initials: PK
authors.lastname: Park
authors.forename: Y C
authors.initials: YC
authors.lastname: Chung