Free space optics (FSO) is a capable key which offers high data rate, more secure and cost effective system to other conventional communication systems. Although it is a first and last mile preference to other setups but still lags in a variety of scenarios. The main limitation of FSO is seen in worse weather conditions where it suffers highest attenuation in transmitted signal. The weather which affects the transmission most are rain and haze due to which the received signal fades away and the signal to noise ratio diminishes which violates the characteristics of an ideal FSO link system. In this paper, wavelength division multiplexing (WDM) is used to enhance the signal power with the use of optical amplifiers so that a better signal could be obtained at the receiver. A WDM-FSO system using hybrid configurations of optical amplifiers is proposed which provides a promising solution for low cost and highly efficient systems.
Wireless Personal Communications – Springer Journals
Published: Aug 28, 2017
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