Evaluación del Desempeño de Redes Ópticas OCDMA: Análisis de Interferencia y Calidad de Transmisión

Abstract

Abstract: This curricular integration project analyzes the performance of optical OCDMA networks through the study of multiple access interference and transmission quality. For this purpose, a SAC-OCDMA simulation model was implemented using fiber Bragg gratings (FBGs) as encoding and decoding elements, employing Hadamard codes and NRZ modulation through a Mach-Zehnder modulator. Traffic scenarios with 3, 5, and 7 users were considered in order to evaluate the impact of user variation on key metrics such as bit error rate (BER), Q-factor, and received power Pr(dBm). The results demonstrate that an increase in the number of users significantly raises MAI, leading to a progressive BER degradation and a decrease in the Q-factor, thus limiting the system s capacity to operate under acceptable signal quality levels. Finally, the performance of OCDMA is characterized and compared with the WDM architecture, identifying advantages, drawbacks, and potential mitigation techniques to improve the performance of multiuser optical networks.