WDM BASED FSO LINK OPTIMIZING FOR 180KM USING BESSEL FILTER

Bikram Beri, Neel Kamal

Abstract: Free space optical link is a growing field in communication due to its advantage of wide bandwidth, high security and easy installation. A wavelength division multiplexing (WDM) access network using free space optical (FSO) communication in different weather conditions like haze and rain are discussed in this article and find out the possibility of communication link up to 180 km in clear weather with 2.5 Gbps data rate on the wavelength of 1550 nm and up to 54 km in haze condition using same data rate & wave length. Further the effect of using two different low pass filter (Gaussian and Bessel) at the receiver are discussed and conclude that Bessel filter is better on 2.5 Gbps data rate for WDM based FSO link.

Keywords: optical communications, wavelength Division Multiplexing (WDM), free space optics (FSO)

DOI: https://doi.org/10.15623/ijret.2014.0303019