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Pulse-power-detection analysis of incoherent O-CDMA systems under the influence of fiber temperature fluctuations

Tsai, Chun-Yi and Yang, Guu-Chang and Lin, Jing-Shiuan and Chang, Cheng-Yuan and Glesk, Ivan and Kwong, Wing C. (2017) Pulse-power-detection analysis of incoherent O-CDMA systems under the influence of fiber temperature fluctuations. Journal of Lightwave Technology, 35 (12). 2366 - 2379. ISSN 0733-8724

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In this paper, a pulse-shift technique, which divides every time slot (or chip) into equal-width sub-chips, is used to model the effect of fiber temperature fluctuations in incoherent optical code-division multiple-access (O-CDMA) systems. With the advance in all-optical thresholding technology, power detection of ultrashort optical pulses is possible. This paper also formulates a new pulse-power-detection model for incoherent OCDMA and applies it to the analysis of the pulse-shift technique as a case study. Numerical studies and computer simulations are presented to validate the new analytical model. Our study presents a more realistic theoretical model of all-optical thresholding in incoherent O-CDMA and results in better performance than the conventional pulse-energy-detection model.