Effect of Operating Wavelengths and Different Weather Conditions on Performance of Point-to-Point Free Space Optical Link

摘要

Free Space Optical (FSO) communication is a very recent and emerging technology to establish broadbandwireless data transmission system using modulated optical beams. The adoption of FSO system is mainlyneeded when any physical connection between the transmitter and receiver is practically impossible andwhere high bandwidth data transmission is expected. The performance of FSO communication technologyis highly dependent on atmospheric attenuation which is related to the visibility of the different weatherconditions as well as operating wavelengths. This paper presents our study about the effect of visibility aswell as operating wavelengths on atmospheric attenuation in different weather conditions for point-to-pointfree space optical link. Moreover, it also discusses the methodology to find out the optimum link distancefor point-to-point FSO link which will be operated in different weather conditions. It is found that,atmospheric attenuation is changed with the change in weather condition as well as operating wavelengths.