Simulation of FSO Transmission at Petaling Jaya due to Attenuations Effect

This research paper study the effects of various attenuations on the free space optical (FSO) transmission systems which are the geometrical attenuation, atmosphere attenuation, sensitivity and system loss in Petaling Jaya, Malaysia region. A completed FSO transmission system link has been modeled using OptSim software. The software is also used to simulate the data and analyze the performance of the system. The effect of haze attenuation is selected for atmosphere conditions and the data for visibility on September 2007 are obtained from Malaysia Metrological Department (MMD) following the ITU-R standards which are ITU-R P.1814 and ITU-R P.1817. The results were found to be very satisfactory. It obeyed the theoretical aspects as higher value of attenuations gives worse quality of signals at the reception. The major factor that influenced the FSO transmission system is geometrical attenuation whereby it gives higher attenuations compared to other types of attenuations which include haze attenuation. However, based on the results of eye diagram and BER value, the good quality of signals can still be achieved at Petaling Jaya region on September 2007. It is expected that in the future, with the available data for various atmospheric conditions, it will contribute to the implementation of FSO system in Malaysia