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Proceedings Paper

Duobinary transmission using coherent detection
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Paper 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 213km. 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.

Paper Details

Date Published: 12 May 2006
PDF: 8 pages
Proc. SPIE 6243, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications II, 62430C (12 May 2006); doi: 10.1117/12.669734
Show Author Affiliations
Gilad Goldfarb, College of Optics and Photonics: CREOL and FPCE, Univ. of Central Florida (United States)
Cheolhwan Kim, College of Optics and Photonics: CREOL and FPCE, Univ. of Central Florida (United States)
Guifang Li, College of Optics and Photonics: CREOL and FPCE, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 6243:
Enabling Photonics Technologies for Defense, Security, and Aerospace Applications II
Michael J. Hayduk; Andrew R. Pirich; Eric J. Donkor; Peter J. Delfyett, Editor(s)

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