Abstract
This paper presents Long Reach Orthogonal frequency division multiplexing Wavelength Division Multiplexing Passive Optical Network (OFDM WDM-PON) system capable of delivering downstream 100 Gbit/s data and upstream 2 Gbit/s data on a single wavelength. The optical source for downstream data and upstream data is Continous wave Laser at central office and reflective semiconductor optical amplifier (RSOA) at each optical network unit. We use two RSOAs at each optical network unit for the 2-Gb/s upstream transmission. We extend the maximum reach of this OFDM WDM PON to be 50 km by using Raman amplifiers at the RN. The hybrid amplifier is designed to enhance the signal power and compensated the fiber dispersion over a wide wavelength range. The combination of 45 km single mode fiber and 5 km dispersion compensated fiber (DCF) is used for transmission of upstream data to improve uplink performance. This research focuses on the implementation and performance analysis of high data rate coherent optical OFDM WDM PON for long-haul transmission. OptiSystem-12 simulation tool is fully used to design and implement the system. The performance of the system is studied and analyzed system in terms of Bit-Error-Rate (BER), the effect of the transmission distance on the constellation diagram, and the relation of BER and OSNR with regard to transmitted input power.
© 2014 Optical Society of America
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