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Proceedings Article

Optimization of level spacing in quaternary optical communication systems

[+] Author Affiliations
Joao L. Rebola, Adolfo V. T. Cartaxo

Instituto de Telecomunicacoes (Portugal)

Proc. SPIE 4087, Applications of Photonic Technology 4, 49 (December 15, 2000); doi:10.1117/12.406448
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From Conference Volume 4087

  • Applications of Photonic Technology 4
  • Roger A. Lessard; George A. Lampropoulos
  • Quebec City, Canada | June 12, 2000

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.

© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Joao L. Rebola and Adolfo V. T. Cartaxo
"Optimization of level spacing in quaternary optical communication systems", Proc. SPIE 4087, Applications of Photonic Technology 4, 49 (December 15, 2000); doi:10.1117/12.406448; http://dx.doi.org/10.1117/12.406448


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