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<p>The investigation of sophisticated multiplexing techniques like Mode Division Multiplexing (MDM) and Wavelength Division Multiplexing (WDM) has been prompted by the growing need for high-capacity inter-satellite optical wireless communication (ISOWC) systems. This study presents a novel hybrid MDM-WDM ISOWC system that leverages the intensity profiles of hybrid Laguerre Gaussian (LG00) and Hermite Gaussian (HG11) modes to enhance data transmission capabilities. The proposed system integrates LG and HG modes across four channels, each channel transmitting Non-Return-to-Zero (NRZ) encoded data at a rate of 10 Gbps, achieving a total system data rate of 40 Gbps at wavelengths of 850&#xa0;nm and 850.8&#xa0;nm. To address inter-channel interference and mode coupling, a novel Transmitter Diversity (TD) technique is implemented. The system’s performance is evaluated through an analysis of Eye Diagrams and Bit Error Rate (BER) under varying ISOWC distances, additional loss, efficiency, and pointing error scenarios. This research offers valuable insights into the feasibility and effectiveness of hybrid LG-HG MDM-WDM (2HG modes × 2LG modes × 10 Gbps) ISOWC systems for future high-speed satellite communication applications. The findings contribute to advancing the understanding and implementation of sophisticated optical wireless technologies to meet the escalating demands for data-intensive satellite communications.</p>

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Investigation of MDM-WDM ISOWC system using hybrid LG-HG intensity profiles

  • 期刊论文

  • 发表日期：

    2025年5月7日

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  • Ramneet Kaur Sahota,
  • Preeti Pannu,
  • Gurjot Kaur Walia,
  • Shivmanmeet Singh

摘要

The investigation of sophisticated multiplexing techniques like Mode Division Multiplexing (MDM) and Wavelength Division Multiplexing (WDM) has been prompted by the growing need for high-capacity inter-satellite optical wireless communication (ISOWC) systems. This study presents a novel hybrid MDM-WDM ISOWC system that leverages the intensity profiles of hybrid Laguerre Gaussian (LG00) and Hermite Gaussian (HG11) modes to enhance data transmission capabilities. The proposed system integrates LG and HG modes across four channels, each channel transmitting Non-Return-to-Zero (NRZ) encoded data at a rate of 10 Gbps, achieving a total system data rate of 40 Gbps at wavelengths of 850 nm and 850.8 nm. To address inter-channel interference and mode coupling, a novel Transmitter Diversity (TD) technique is implemented. The system’s performance is evaluated through an analysis of Eye Diagrams and Bit Error Rate (BER) under varying ISOWC distances, additional loss, efficiency, and pointing error scenarios. This research offers valuable insights into the feasibility and effectiveness of hybrid LG-HG MDM-WDM (2HG modes × 2LG modes × 10 Gbps) ISOWC systems for future high-speed satellite communication applications. The findings contribute to advancing the understanding and implementation of sophisticated optical wireless technologies to meet the escalating demands for data-intensive satellite communications.