Enhancement of free-space optical communication in fog conditions with wavelength division multiplexing technique
摘要
Fog remains a major obstacle to enhancing the availability and reliability of FSO landlines because fog particles scatter light as it travels and significantly attenuate the signal. This research assesses the efficacy of the communication system employing the WDM-FSO methodology. The simulation is achieved under foggy weather conditions with NRZ modulation. The free space distance in optical communication systems (FSO) and line-of-sight constraints restrict the intensity ratio of weather-induced attenuation. Wavelength division multiplexing (WDM) in optics offers a significant benefit in communication systems. The recording of received power enables the examination of power loss using a range analyzer in the receiving section based on OptiSystem 7.0. Enhancing the receiver aperture diameter augments signal quality performance in diverse fog circumstances. The data is transferred at varying rates under different fog conditions. Our findings demonstrate that the WDM-FSO simulation implementation has superior performance in conditions of intense fog. Expanding the receiver aperture will enable the system to attain maximum received power, minimal BER, and elevated Q-factor concurrently.