Mathematical modeling and statistical analysis of SPE-OCDMA systems utilizing second harmonic generation effect in thick crystal receivers

Mehdi D. Matinfar; Jawad A. Salehi

doi:10.1117/12.852365

2 December 2009 Mathematical modeling and statistical analysis of SPE-OCDMA systems utilizing second harmonic generation effect in thick crystal receivers

Mehdi D. Matinfar, Jawad A. Salehi

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Proceedings Volume 7631, Optoelectronic Materials and Devices IV; 76310Z (2009) https://doi.org/10.1117/12.852365
Event: Asia Communications and Photonics, 2009, Shanghai, Shanghai , China

Abstract

In this paper we analytically study and evaluate the performance of a Spectral-Phase-Encoded Optical CDMA system for different parameters such as the user's code length and the number of users in the network. In this system an advanced receiver structure in which the Second Harmonic Generation effect imposed in a thick crystal is employed as the nonlinear pre-processor prior to the conventional low speed photodetector. We consider ASE noise of the optical amplifiers, effective in low power conditions, besides the multiple access interference (MAI) noise which is the dominant source of noise in any OCDMA communications system. We use the results of the previous work which we analyzed the statistical behavior of the thick crystals in an optically amplified digital lightwave communication system to evaluate the performance of the SPE-OCDMA system with thick crystals receiver structure. The error probability is evaluated using Saddle-Point approximation and the approximation is verified by Monte-Carlo simulation.

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Mehdi D. Matinfar and Jawad A. Salehi "Mathematical modeling and statistical analysis of SPE-OCDMA systems utilizing second harmonic generation effect in thick crystal receivers", Proc. SPIE 7631, Optoelectronic Materials and Devices IV, 76310Z (2 December 2009); https://doi.org/10.1117/12.852365

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KEYWORDS

Second-harmonic generation

Crystals

Photodetectors

Receivers

Telecommunications

Harmonic generation

Nonlinear crystals

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