Analysis of Long-haul, Incoherent Fiber-Optic CDMA Systems with Temperature Variation and Tunable dispersion compensation

• Main Authors: Che-Wei Chang, 張哲瑋
• Other Authors: 楊谷章
• Format: Others
• Language: en_US
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/ptjg6u

碩士 === 國立中興大學 === 通訊工程研究所 === 106 === In this thesis, in addition to chromatic dispersion, recent studies have shown that temperature variation in long-haul, picosecond, incoherent, fiber-optic code-division multiple-access (FO-CDMA) systems is a realistic problem even with the use of dispersion-compensating fiber. The phenomenon creates distortion in the auto- and cross-correlation functions seen at FO-CDMA receivers and, in turn, worsens system performance. Applying a recently demonstrated semiconductor-optical-amplifier-based tunable dispersion compensator, this thesis formulates a new analytical model to quantify the performance of this kind of FO-CDMA systems, which also support adjustable quality-of-services through a flexible choice of code weight. Computer simulations are performed to validate the new analytical model. Our study shows that the new model is more representative and provides better explanation to the effect of temperature variation to this kind of FO-CDMA systems than the random-shift model.