Develop High Gbps Network Access using Wavelength Division Multiplexing – Multiple Input Multiple Output (WDM-MIMO) in Fiber Optic Communication System (FOCS)

Michelle Kimberly, Micheal (2023) Develop High Gbps Network Access using Wavelength Division Multiplexing – Multiple Input Multiple Output (WDM-MIMO) in Fiber Optic Communication System (FOCS). [Final Year Project Report] (Unpublished)

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Abstract

Free optical space is a wireless communication technology that has started transforming the world into a modern society by enabling data's secure and rapid transmission. Data is transferred through an air medium without significantly contaminating the environment through a high-powered laser beam transmitted through free space. WDM-MIMO (wavelength division multiplexing-multiple inputs and multiple outputs) system is a potential future technology for optical networks due to its great capacity and adaptability. Optisystem software was used to run simulations to study how various transmission range affected the performance of multiple size of FSO channel. In this project, the bit rate is set higher up to 2 Gbps for increased capacity, improved throughput, and efficient utilization of available bandwidth. MIMO and WDM-MIMO systems are being modelled and analyzed respectively using 2, 4, or 8 channels at various transmission ranges between 5 – 30 km. Metrics such as Eye Diagram, BER and Q Factor are evaluated. Simulation results show that implementing WDM-MIMO techniques for FSO systems enable numerous carrier signals multiplex onto single fiber using non-identical wavelengths and expand the data rate. The best outcome shows that by using 8 channels of WDM-MIMO, the optimum transmission range is able to reach up to 27 km with maximum Q Factor of 5.53 and minimum BER of 9.55e-09. The efficiency of each channel was also calculated, showing that 8 channels of WDM-MIMO system is proven to be the highest which is 108% more efficient compare to other size of channels. The result was affected due to a few factors such as faster data rate, flexibility and scalability, resilience against impairments, and improved spectral efficiency. Overall, this study demonstrates the capability of WDM-MIMO systems for high-capacity and reliable communication in future optical networks.

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