Abstract
The 10-Gigabit Passive Optical Network (GPON), also known as (XGPON), is a key technology for the next generation of optical fibre communication systems that can improve reliability data rate. However, the increment in the transmission distance and data rate will lead to increased dispersion. This paper proposes a model based on the Sub-Carrier Multiplexing/Wavelength Division Multiplexing-Radio over Fibre-10-Gigabit Passive Optical Network system (SCM/WDM-RoF-XGPON) for Radio Frequency (RF) using a conventional Optical Network Unit (ONU) with the Square Root Module (SRM) on the side of the receiver. It is connected to a central office Optical Line Terminal (OLT) via an access network for multi-channel optical fibre transfers with a distance of 80 km and at 10 Gbps data rate. The Optisystem 15 simulation software is used to evaluate the proposed system based on the Bit Error Rate (BER), Quality factor (Q-factor) and eye diagram. The proposed system of bidirectional fibre links uses 1270 nm and 1577 nm wavelengths for uplink and downlink transmissions, respectively. The performance is further enhanced by using SRM to compensate for the square law characteristics, making it suitable for broadband services. Due to the utilisation of SRM in the architecture, the reported results reveal a double enhancement in successful transition performance at an optical fibre length of 80 km distance. The BER displayed significant improvement (less than 1.00E-09) with SRM at 80 km; however, without SRM and at 50 km, the BER is less than 1.00E-09. Investigations have presented an enhancement in the Q-factor's effectiveness with the use of SRM, which helps to increase the XGPON length. When the length of the fibre is 80 km, the Q-factor is 6 with SRM, while it is 3.7 without SRM.
Highlights
The demands for higher bandwidth [1], [2], link reliability and high data rate applications have been significantlyThe associate editor coordinating the review of this manuscript and approving it for publication was Qunbi Zhuge .growing in the past few years
SIMULATION RESULTS AND PERFORMANCE ANALYSIS In order to evaluate the performance of the proposed sub-carrier multiplexing (SCM)/wavelength division multiplexing (WDM)-XGPON-radio over fibre (RoF) system, this section presents a set of simulation results through analysed the proposed model with used the aforementioned simulation parameters, and comparing the results with and without Square Root Module (SRM)
The results indicate that the performance of the WDM/SCM-XGPON-RoF system with SRM is the best compared to the other systems
Summary
The demands for higher bandwidth [1], [2], link reliability and high data rate applications have been significantly. The research aim is to use PON to provide a two-way communication that includes upstream and downstream transmissions via a single two-way fibre at specific distances to reduce network interfaces and minimise cost. The bi-directional Dense Wavelength-DivisionMultiplexing (DWDM)-PON architecture was suggested in [32] with the use of optical carrier separation and suppression technology to produce both upstream and downstream wavelength channels from a single laser. In this paper, we propose and discuss the SCM/WDM-RoF-XGPON system using ONU with SRM on the side of the receiver for the bidirectional fibre. The proposed system provides broadband services for a fibre link of 80 km with a split ratio of 32 and a data rate of 10 Gbps to further enhance system performance This proposed scheme represents a practical solution for simultaneously equipping the data rate of optical links in XGPON access networks.
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