Abstract
In this paper, a symmetric 80Gbps next generation passive optical network (NG-PON) architecture has been presented. To achieve 80Gbps symmetric data rate, eight pairs of wavelengths have been used. Wavelength division multiplexing (WDM) technique is used at the central office (CO) to transmit downstream data. For downstream access, each wavelength is divided into eight parts by 1×8 splitter and the system supports 64 ONUs (Optical network units). All the 64 ONUs transmits their upstream data by sharing eight upstream wavelengths using time wavelength division multiplexing (TWDM). The performance of the system has been assessed in terms of minimum bit error rate (BER) and Q-factor for the varied distance from 10 km to 100 km. From the results, it has been observed that the presented system works well up to 65 km system length.
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