Title

Duobinary Transmission Using Coherent Detection

Keywords

Chromatic dispersion; Constellation diagram; Optical duobinary; Optical fiber communication

Abstract

The impact of chromatic dispersion on the complex electric field of an optical phase-coded duobinary signal is investigated through numerical simulation. The evolution of the optical field is most clearly represented by the optical constellation diagram at varying transmission distances. Dispersion causes distortion and rotation of the optical constellation, leading to eye closure of the received signal. When direct detection is employed rapid eye closure starts after approximately 213 km. In this letter, the use of coherent detection is suggested to extend this transmission distance. A decision directed phase locked loop is suggested to establish the feasibility of use of coherent detection for this modulation format. Employing coherent detection increases this dispersion limit by 70km.

Publication Date

8-23-2006

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

6243

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.669734

Socpus ID

33747364748 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33747364748

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