The Effect Of Dispersion On Optical Fiber

Anura, Ahmad Kamil (2015) The Effect Of Dispersion On Optical Fiber. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) The Effect Of Dispersion On Optical Fiber.pdf - Submitted Version Download (2MB)

Abstract

Optical fibre can be used as a medium for telecommunication and computer networking because it is flexible and can be bundled as cables. It is worth used for long-distance communications because light propagates through the fibre with little attenuation compared to electrical cables. This allows long distances to be spanned with few repeaters. However, in order to extend the higher bit rate of optical transmission, there have some impairment arise and needs to be improve or eliminate. Generally, the transmission impairment will affect optical transmission and will decrease the quality of the optical signal along the propagation path. Dispersion is one of the transmission impairment which have severe effect on optical network. In this investigation, other transmission impairment regarding noise and interferences also need to be considered such as multi-access interference (MAI), optical beat interference (OBI) and receiver’s noise. In this project Optisystem is used as simulation tools. The system performance is evaluate by using negative and positive dispersion fiber. The pre-, post- and symmetrical dispersion compensation by using DCF and also chirp grating dispersion compensation were also used and simulate in this project to get the better performance of the signal pulse. By using the suitable parameter for the component in the circuit, the different result can be seen and analyze whether it is acceptable or not. The result from Optisystem simulation shows that for single-mode fibre (SMF) under impact of chromatic dispersion, the number of supportable users is extremely decreased and the transmission length is remarkable shortened.

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