Performance Analysis of Bus Topology in Fiber Optic Communication

Topology refers to the layout of connected devices in a network. It describes the way in which the elements of the network are mapped. Optical network topologies such as bus, star and tree reduce complexity by using minimum number of couplers, multiplexers, demultiplexers and optical amplifiers and can reduce cost in large network. The performance of bus topology is investigated and identified that, for bus topology the quality of signal goes on decreasing with increase in number of nodes. The performance of bus topology is investigated in presence of optical amplifiers such as Semiconductor Optical Amplifiers (SOA) and Erbium Doped Fiber Amplifier (EDFA) and photodiodes such as PIN and Avalanche photodiode (APD). By considering the signal quality factor and bit error rate it is investigated that bus topology using EDFA with PIN photodiode serves better.