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<p>There is a need of reliable and efficient underwater communication system to cater to the demands of increased data rate for underwater communication between nodes, video streaming and real time applications. Compared with conventional acoustic underwater wireless communication and underwater Radio Frequency (RF) communication technologies, underwater optical wireless communication (UOWC) technology has greater potential to provide high data rate wireless connections due to the large license-free bandwidth. Various advanced technologies have been proposed and investigated to further increase the capacity and performance of Underwater Optical Communication Systems. Here in this paper, a Wavelength Division Multiplexing (WDM) based Underwater Optical Wireless System is proposed thus increasing the data carrying capacity of erstwhile UOWC Systems and impact of geometrical loss on the propagating UOWC signal is analyzed. It is found that a minimum of 0.17–0.2&#xa0;m of receiver diameter and less than 0.75–0.80&#xa0;m rad of divergence angle gives optimum Q factor results with better results for lesser transmitter diameter. In case of variation of angle of divergence, Q factor value greater than 13 was achieved with transmitter diameter of 0.03&#xa0;m when divergence angle was less than 0.6&#xa0;m rad. In case of variation of receiver diameter, Q factor value around 18 was achieved with transmitter diameter of 0.02&#xa0;m when receiver diameter was approximately 0.3&#xa0;m. Considering the effect of attenuation on range of transmission - while taking optimum values of geometric loss parameters the Q factor of approximately 7 at 500&#xa0;m has been observed.</p>

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Assessing the impact of geometric losses on WDM-Based underwater optical wireless communication system

  • 期刊论文

  • 发表日期：

    2025年5月3日

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  • Jashandeep Kaur,
  • Ramandeep Kaur,
  • Rajandeep Singh

摘要

There is a need of reliable and efficient underwater communication system to cater to the demands of increased data rate for underwater communication between nodes, video streaming and real time applications. Compared with conventional acoustic underwater wireless communication and underwater Radio Frequency (RF) communication technologies, underwater optical wireless communication (UOWC) technology has greater potential to provide high data rate wireless connections due to the large license-free bandwidth. Various advanced technologies have been proposed and investigated to further increase the capacity and performance of Underwater Optical Communication Systems. Here in this paper, a Wavelength Division Multiplexing (WDM) based Underwater Optical Wireless System is proposed thus increasing the data carrying capacity of erstwhile UOWC Systems and impact of geometrical loss on the propagating UOWC signal is analyzed. It is found that a minimum of 0.17–0.2 m of receiver diameter and less than 0.75–0.80 m rad of divergence angle gives optimum Q factor results with better results for lesser transmitter diameter. In case of variation of angle of divergence, Q factor value greater than 13 was achieved with transmitter diameter of 0.03 m when divergence angle was less than 0.6 m rad. In case of variation of receiver diameter, Q factor value around 18 was achieved with transmitter diameter of 0.02 m when receiver diameter was approximately 0.3 m. Considering the effect of attenuation on range of transmission - while taking optimum values of geometric loss parameters the Q factor of approximately 7 at 500 m has been observed.