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Proceedings Paper

Low-cost multimode fiber gigabit Ethernet using Manchester encoded signal for an improved transmission performance
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Paper Abstract

We study the transmission performance of Manchester encoded signals over multimode fibers at 1.25 Gb/s and 2.5 Gb/s focusing on regimes where there is strong slowly time varying signal fading and noise corruption. This fading and noise is due both to the modal noise and the dispersion varying cruel environmental effects. A non-return-to-zero (NRZ) modulation scheme typically used in the transmission suffers severally from such slowly varying signal fading; whereas Manchester encoded signal, which carries the binary value by the pulse position within a bit slot, in contrast, has a better performance in coping with the slowly varying signal degradation. In this paper, we study the transmission performance of these two signaling schemes, and the results show that Manchester encoding outperforms NRZ in coping with slowly varying signal degradation.

Paper Details

Date Published: 19 November 2007
PDF: 8 pages
Proc. SPIE 6783, Optical Transmission, Switching, and Subsystems V, 67830K (19 November 2007); doi: 10.1117/12.744653
Show Author Affiliations
C. H. Kwok, Univ. of Cambridge (United Kingdom)
Richard V. Penty, Univ. of Cambridge (United Kingdom)
Ian H. White, Univ. of Cambridge (United Kingdom)

Published in SPIE Proceedings Vol. 6783:
Optical Transmission, Switching, and Subsystems V
Dominique Chiaroni; Wanyi Gu; Ken-ichi Kitayama; Chang-Soo Park, Editor(s)

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