Mitigation of timing-misalignment-induced distortion using electronic equalizer in RZ/CSRZ systems

Author

Zhao, Jian ; Chen, Lian-Kuan ; Chan, Chun-Kit

Author_Institution

Dept. of Inf. Eng., Chinese Univ. of Hong Kong, China

Volume

17

Issue

5

fYear

2005

fDate

5/1/2005 12:00:00 AM

Firstpage

1106

Lastpage

1108

Abstract

A novel method using cost-effective electronic equalizer is proposed to mitigate the impairment from timing misalignment (TM) between the pulse carver and data modulator in return-to-zero (RZ) and carrier-suppressed RZ systems. Simulations show that maximum likelihood sequence equalizer (MLSE) significantly reduces TM-induced power penalty and sampling phase sensitivity. Simultaneous mitigation of both TM-induced distortion and polarization-mode dispersion using a single MLSE is also demonstrated.

Keywords

equalisers; optical distortion; optical fibre communication; optical fibre dispersion; optical fibre polarisation; optical modulation; MLSE; TM-induced distortion; TM-induced power penalty reduction; carrier-suppressed RZ system; data modulator; electronic equalizer; impairment mitigation; maximum likelihood sequence equalizer; phase sensitivity; polarization-mode dispersion; pulse carver; return-to-zero system; timing-misalignment-induced distortion; Equalizers; Maximum likelihood estimation; Optical distortion; Optical fiber polarization; Optical filters; Optical modulation; Optical pulse generation; Optical pulses; Optical receivers; Pulse modulation; Equalizers; modulation; optical fiber communication; synchronization;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.845667

Filename

1424115