title: Transmission of multi-polarization-multiplexed signals: another freedom to explore?
abstract: We propose a configuration of signal multiplexing with four polarization states, and investigate its transmission performance over single-mode-fiber links. Assisted by coherent detection and digital signal processing (DSP), the demodulation of four-polarization multiplexed (4PM) on-off-keying (OOK) and phase-shift-keying (PSK) signals are achieved. We then discuss the impact of the crosstalk from polarization mode dispersion (PMD) on 4PM systems. The transmission distance is extended from ~50-km to ~80 km by employing feedback-decision-equalizers. We also compare the back-to-back characteristics of the 40-Gbit/s 4PM-OOK system and 40-Gbit/s PDM-QPSK system with the same spectral efficiency. The results show that the performance of 4PM systems is comparable to that of PDM-QPSK systems, which indicates that the proposed scheme is a potentially promising candidate for future optical networks.
authors.affiliation: Center for Information Photonics & Communications, School of Information Science & Technology, Southwest Jiaotong University, Chengdu, Sichuan 610031, China.
authors.forename: Zhiyu
authors.initials: Z
authors.lastname: Chen
authors.forename: Lianshan
authors.initials: L
authors.lastname: Yan
authors.forename: Wei
authors.initials: W
authors.lastname: Pan
authors.forename: Bin
authors.initials: B
authors.lastname: Luo
authors.forename: Yinghui
authors.initials: Y
authors.lastname: Guo
authors.forename: Hengyun
authors.initials: H
authors.lastname: Jiang
authors.forename: Anlin
authors.initials: A
authors.lastname: Yi
authors.forename: Yafei
authors.initials: Y
authors.lastname: Sun
authors.forename: Xiaoxia
authors.initials: X
authors.lastname: Wu
mesh_terms: D003195:Computer Communication Networks / Q000295:instrumentation*; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*