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Proceedings Paper

A method for optimizing optical duobinary transmission systems
Author(s): Shuai Wang; Xue Chen; Fangwei Fu; Weiqin Zhou; Sheping Shi
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Paper Abstract

DWDM networks have been evolving to higher spectral efficiency. To make optical duobinary format, which is considered as a suitable modulation format in MAN DWDM networks, can work in 50GHz channel spacing 43Gb/s DWDM networks is very significant. In this paper, it is pointed out that the delay time in delay-and-add optical duobinary system is one of key factors which affect system performance. The suitable delay time for 43Gb/s systems compatible 50GHz with 100GHz channel spacing is obtained by system simulation. The simulation results show that 0.8 bit delay time is more suitable for 43Gb/s ODB DWDM system at compatible 50 with 100GHz channel spacing than 1 bit delay time because of its higher Q value and bigger dispersion and nonlinearity tolerance.

Paper Details

Date Published: 11 November 2008
PDF: 8 pages
Proc. SPIE 7136, Optical Transmission, Switching, and Subsystems VI, 71361B (11 November 2008); doi: 10.1117/12.803379
Show Author Affiliations
Shuai Wang, Beijing Univ. of Posts and Telecommunications (China)
Xue Chen, Beijing Univ. of Posts and Telecommunications (China)
Fangwei Fu, Beijing Univ. of Posts and Telecommunications (China)
Weiqin Zhou, ZTE (China)
Sheping Shi, ZTE (China)

Published in SPIE Proceedings Vol. 7136:
Optical Transmission, Switching, and Subsystems VI
Ken-ichi Kitayama; Pierpaolo C. Ghiggino; Kim Roberts; Yikai Su, Editor(s)

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