Investigation on Performance of Large Area Low Loss Fiber in High Capacity Multichannel Systems

In this paper, performance comparision between standard single mode fiber (SMF) and large area low loss fiber (LA-LLF) is done which reveals the advantages of using LA-LLF in closely spaced, nonlinearitv prone high power DWDM systems. The effects of high launched power, number of channels, channel spacing and transmission distance on the quality of transmission Q factor are investigated through numerical simulations. In single channel 128 Gbps PM-QPSK system, LA-LLF shows about 1.5 dB more tolerance than SMF while operating with high powers. In the nyquist rate spaced multichannel system, LA-LLF shows about 2 dB superior performance over SMF when maximum number of channels are transmitted and 0.8 dB better performance when transmission distances are varied.