Optimization of level spacing in quaternary optical communication systems

Joao L. Rebola; Adolfo V. T. Cartaxo

doi:10.1117/12.406448

15 December 2000 Optimization of level spacing in quaternary optical communication systems

Joao L. Rebola, Adolfo V. T. Cartaxo

Proceedings Volume 4087, Applications of Photonic Technology 4; (2000) https://doi.org/10.1117/12.406448
Event: 2000 International Conference on Application of Photonic Technology (ICAPT 2000), 2000, Quebec City, Canada

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.

Citation Download 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, (15 December 2000); https://doi.org/10.1117/12.406448

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