Performance evaluation of star, tree & mesh optical network topologies using optimized Raman - EDFA Hybrid Optical Amplifier

Performance at 15 Gbps of Phase Modulated signals for Star, tree and mesh optical network topologies are investigated using optimized Raman-EDFA Hybrid Optical Amplifier. Number of the users carried out is calculated by the consideration of the signal's Quality factor and received signal power. In all the three topologies, the performance is evaluated in terms of number of users at different input signal powers. In all these three topologies, the signals used are generated at 90° phase deviation. The channel spacing is taken as 0.1 THz with 1MHz line width. The minimum input signal power for all the topologies is -60 dBm. Mesh topology provides better results in terms of Quality Factor within acceptable range of 16.4621-28.9058 and provides output power 12.472dBm at each receiver whereas star topology supports 14 users within acceptable quality factor range of 7.60899-32.1223 with output signal power of 12.600dBm at each receiver and tree topology supports 16 users within acceptable quality factor range of 8.82762-9.08396 with output signal power of 12.591dBm at each receiver.