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Proceedings Paper

Optimization of level spacing in quaternary optical communication systems
Author(s): Joao L. Rebola; Adolfo V. T. Cartaxo
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Paper Abstract

In this work, the optimization of level spacing in terms of the extinction ratio variation in quaternary optical communication systems is investigated, for signal-dependent noise dominance. It is shown that the performance of optically preamplified quaternary communication systems can be optimized in terms of levels spacing using very simple formulas, also derived in this work. For the null extinction ratio, sensitivity improvements of about 6 dB can be achieved by proper location of signal levels in comparison with the sensitivity of equally spaced levels. At high extinction ratio, this improvement is not so significant.

Paper Details

Date Published: 15 December 2000
PDF: 11 pages
Proc. SPIE 4087, Applications of Photonic Technology 4, (15 December 2000); doi: 10.1117/12.406448
Show Author Affiliations
Joao L. Rebola, Instituto de Telecomunicacoes (Portugal)
Adolfo V. T. Cartaxo, Instituto de Telecomunicacoes (Portugal)

Published in SPIE Proceedings Vol. 4087:
Applications of Photonic Technology 4
Roger A. Lessard; George A. Lampropoulos, Editor(s)

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