Performance analysis of high speed optical network based on Dense Wavelength Division Multiplexing

To meet the challenge of increasing bandwidth demand; multi-channel optical communication systems are realized using wavelength division multiplexing. Dense Wavelength Division Multiplexing technique makes full use of the huge fiber bandwidth and hence it is th e ideal means of network expansion and the convenient way to introduce new broadband services. In this paper, performance of a 64 channel DWDM system for different modulation formats; channel spacing; line widths of optical sources and different fiber lengths has been analyzed. It is found that 64 channel DWDM systems gives better performance with 0.3 MHz line width, RZ modulation format and EDFA as the optical amplifier.