In this article, a description on the dispersion is studied along with the effect of bit rate and wavelength of the silica core optical fiber on the dispersion in optical communication system has been observed. In optical fiber, transmission loss is one of the major problem along with different dispersion that to be minimize. These can be dependent on the transmission bit rate and wavelength of different types of optical fiber. For getting the dispersion based on bit rate and wavelength, an optical system has been simulated. It is observed that by varying the bit rate the dispersion also varies. It has been also observed that in all the case of bit rate, it is smaller for the wave length (1.530 µm and 1.510 µm) which is nearer to the most attractive reference wave length 1.55 µm for optical communication.

Dispersion, Bit rate, Wavelength, Transmission loss