The wireless optical communication network (OWCN) is highly atmospheric dependent system due to its optical nature and disturbing environmental conditions between two transceiver nodes which directly affect the performance of the communication. The power loss of signal experienced in this scenario has close relation with particles present in the atmosphere which further results to degrade the quality of communication. This research seeks to investigate the behavior of multi-channel optical network under wireless environment and the interaction of optical beam with particles available in different atmospheric weather situations. This study is focused to analyze the multiple wavelengths, signal power and characteristics of optics which usually used to build an optical conventional network. Operating wavelengths and optical parameters are analyzed to estimate the optimal beam for various erratic properties of environment as different climate have different impact on the optical nature of signal.  Multi-channel technique is analyzed to observe the effect of attenuation under various climate classes and multiple atmospheric models are used to estimate the turbulence caused by environment. Fog models are evaluated in detail as it has the worst impact on optical signal and the behavior of optical amplifier is also examined under this multi-channel technique. Single optical source is fragmented to replicate the light signal on multiple channels which results to ensure the possibility of reception for every single corrupted bit and it reduces the attenuation effect as well. Furthermore, this study includes the analysis of beam divergence and transceiver aperture variation in terms of bit error rate (BER) and comparison of proposed scheme of optical network with the conventional link. The results are described in terms of received power, signal to Noise ratio (SNR), link margin and quality factor.

有线光通信网络是一个非常依赖大气环境的系统，其光学特性和两个收发器节点的环境干扰都是直接影响通信性能的重要因素。在这种情况下，信号的功率损耗与大气中存在的粒子有着密切的关系，这些粒子会进一步降低通信质量。本文主要研究无线环境下多通道光网路的行为，以及在不同大气气象条件下，光束与粒子的相互作用。本研究主要对传统光通信网路中常用的多波长、信号功率及光学特性进行分析，通过对工作波长和光学参数的分析估计出不同气候下环境的各种不稳定特性的最佳光束对光学特性的影响。然后，分析了多通道技术在不同气候等级下的衰减效应，并利用多种大气模式估计了环境引起的不稳定现象；并详细分析了雾天对光信号的影响，并在此多通道技术下研究了光放大器的性能，将单个光源被分割，在多个通道上复制光信号，从而确保每一个损坏位都有可能接收到光信号，同时也降低了衰减效果。此外，本文还分析了光束发散和收发器孔径随误码率的变化，并将提出的光通信网络方案与传统方案进行了比较，并从接收功率、信噪比、链路余量和质量因子等方面对结果进行了描述。