The last decade has witnessed significant growth of optical communication systems due to low attenuation offered for longer distances with high capacities. Optical wireless communication such as Free space Optical (FSO) systems provide license free secure transmission with lower deployment cost to make it attractive solution for providing communication services in remote areas. However atmospheric turbulences can become major challenges for deploying the FSO systems as it affects its performance. In this work, we propose a 320 Gbps, 32 channel’s hybrid fiber + FSO system using cost efficient On OFF Key modulation by incorporating hybrid dense wavelength division multiplexing scheme. Each channel carries 10 Gbps data segregated by 100 GHz channel spacing. Also, the effect of variant climatic turbulence analyzed for non-return to zero and Return to zero system considering clear sky, light fog, moderate fog and dense fog conditions.

过去的十年见证了光通信系统的显着增长，这是由于低距离衰减和高容量带来的。诸如自由空间光学（FSO）系统之类的光学无线通信以较低的部署成本提供了无许可证的安全传输，使其成为用于在偏远地区提供通信服务的有吸引​​力的解决方案。但是，大气湍流可能会成为部署FSO系统的主要挑战，因为它会影响FSO系统的性能。在这项工作中，我们提出了一个320 Gbps，32通道的混合光纤+ FSO系统，该系统通过结合混合密集波分复用方案，使用具有成本效益的On OFF Key调制。每个通道承载10 Gbps数据，按100 GHz通道间隔隔离。还，