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Transmitter diversity and OAM incorporated 40 Gbps free space optical system

  • Somdeep Singh , Preeti Singh EMAIL logo and Pardeep Kaur
Published/Copyright: May 14, 2024
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Abstract

The present research evaluates optical angular momentum’s (OAM) performance in challenging atmospheric conditions and emphasizes its significance in free space optical (FSO) communication systems. It has been demonstrated that implementing the transmitter diversity (TD) technique effectively suppresses inter-channel interference, improving system performance as a whole. The best option among the studied encodings is found to be the combination of non-return-to-zero (NRZ) and carrier suppressed RZ (CSRZ), which performs better in a variety of weather scenarios and covers a wide FSO range from 72 m to 1450 m. Proposed system offered distance enhancement of 81.25 % under clear sky, 16.66 % under light rain, 10.22 % under moderate rain, 3.4 % under heavy rain, 10 % under light haze, 4 % under moderate haze, 4.44 % under heavy haze, 12.5 % under light fog, 4 % under moderate fog, 7.8 % under heavy fog, 5.8 % under light dust, 7.6 % under medium dust and 12.5 % under heavy dust as compared to existing workIn particular, during bad weather, this research offers significant insights into the design and optimisation of high-speed FSO systems.

Keywords: CSRZ; NRZ; OAM; TD; FSO

Corresponding author: Preeti Singh, Electronics and Communication Engineering, University Institute of Engineering & Technology, Chandigarh, India, E-mail:

  1. Research ethics: Not applicable.

  2. Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  3. Competing interests: The authors state no conflict of interest.

  4. Research funding: None declared.

  5. Data availability: Not applicable.

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Received: 2024-01-11
Accepted: 2024-03-07
Published Online: 2024-05-14
Published in Print: 2025-04-28

© 2024 Walter de Gruyter GmbH, Berlin/Boston

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