Abstract

In this paper, we have investigated bidirectional hybrid wavelength-division multiplexing/time-division multiplexing passive optical networks (WDM/TDM PONs) for Raman amplifiers, semiconductor optical amplifiers (SOAs), and erbium-doped fiber amplifiers (EDFAs) at a 10 Gbps data rate with 128 optical network units (ONUs). The system is improved using polarization modulation with 16 quadrature amplitude modulation (16-QAM) to utilize the maximum bandwidth. A circulator is used to achieve the bidirectional transmission in the same channel. The upstream data is transmitted at 1300 nm and downstream data is transmitted at 1550 nm wavelength so that the crosstalk effect can be minimized. The Q factor and output optical power are measured at 40 and 50 km distance with 128 ONUs for a 10 Gbps data rate. It has been observed that an EDFA shows better performance than a SOA and a Raman amplifier.

© 2017 Optical Society of America

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