Design of Radio over Fiber Passive Optical Network

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Gazi Üniversitesi, Mühendislik Fakültesi, Elektrik - Elektronik Mühendisliği, Türkiye

Tezin Onay Tarihi: 2023

Tezin Dili: Türkçe

Öğrenci: Hasanain Shanan

Danışman: Mehmet Çiydem

Özet:

Radio over Fiber-Passive Optical Networks (RoF-PON) are viewed as the main answer for expanding capacity, coverage, high data rate, portability and adaptability by combining the advantages of the fiber and RF technology for wired and wireless communication. Wavelength Division Multiplexing (WDM) is also another technology used in PONs to carry big data with high speed. In order to meet the demanding requirements of broadband systems, in this study, we have proposed WDM-RoF-PON system architecture in two different configurations: booster amplifier and pre-amplifier. Proposed WDM-RoF-PON system utilizes a Reflective Semiconductor Optical Amplifier (RSOA) to carry 2.5 Gbps baseband (BB), 1.25 Gbps downlink, 1 Gbps uplink through 25 km Single Mode Fiber (SMF) and 5.2 m free-space distance. Design and simulations of WDM-RoF-PON system have been performed in Opti System V14 software tool. Quality factor (Q), bit error rate (BER), fiber reach (km) and eye pattern performances of proposed system have been investigated. Moreover, in order to mitigate distortions due to scattering and fiber nonlinearities, pre/post-distortion compensation fiber (DCF) techniques have been implemented in simulations and results have been compared with uncompensated case. Simulation results show that proposed WDM-RoF-PON’s fiber reach is almost 100 km with a BER of 10^-9 with pre-post DCF while uncompensated system’s reach is almost 70 km with the same BER. Considering all the system performance parameters and their analysis, and comparing with the other works, it can be concluded that proposed WDM-RoF-PON system could be a good, flexible solution for wired/wireless communications with satisfactory performance to meet the high speed, broadband, adaptable and portable requirements of emerging systems.