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400 Gb/s free space optical communication (FSOC) system using OAM multiplexing and PDM-QPSK with DSP

  • Simarpreet Kaur , Shippu Sachdeva EMAIL logo and Manoj Sindhwani
Published/Copyright: July 14, 2022
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Abstract

In this work, an optical angular momentum (OAM) multiplexing enabled 400 Gbps free space optical communication (FSOC) system has been proposed using polarization division multiplexed (PDM) quadrature phase shift keying (QPSK) and digital signal processer (DSP) in the receiver. Different weather conditions such as clear weather, rain and fog are explored in proposed system and their deteriorating effects are observed in terms of log BER. Laguerre Gaussian (LG) beams (LG0,0, LG0,13, LG0,40, and LG0,80) are employed to realize four channel FSOC system and OAM multiplexing. Results revealed that integration of DSP in the PDM-QPSK receiver cause significant improvement in symbols placements in constellation and moreover proposed system successfully covered 3500 m, 3000 and 1200 m in FSO under clear weather, rain and fog, respectively.

Keywords: DSP; FSOC; LG; OAM; QPSK

Corresponding author: Shippu Sachdeva, Lovely Professional University, Phagwara, India, E-mail:

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2022-06-09
Accepted: 2022-06-23
Published Online: 2022-07-14
Published in Print: 2024-10-28

© 2022 Walter de Gruyter GmbH, Berlin/Boston

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