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Application of Aperture Truncated Airy Beams in Free Space Optical Communications

Authors:
Minghao Wang
Xiuhua Yuan
Peng Deng
Wei Yao
Timothy Kane

Keywords: space optical communications; Airy beam; truncated Airy beams; beam propagation; scintillation index

Abstract:
Free Space Optical Communications (FSOC) has proved to be a reliable alternative to radio frequency systems in providing high speed wireless data links, especially for satellite communications. To further improve the FSOC performance, plenty of novel light source beams are proposed and evaluated, among which Airy beams have gained intensive research efforts in the past decade, owing to its remarkable features. An ideal Airy beam is able to propagate in free space without diffraction, and it is resistant to atmospheric turbulence due to the self-healing feature. Besides, the main lobe of an Airy beam follows a controllable ballistic trajectory, which can be particularly useful to improve the link robustness in presence of blockage. However, if the transverse extent of the Airy beam is confined by a finite optical aperture, the non-diffractive features no longer retain. But within the limited diffraction-free range, the Airy beam is still able to self-heal and self-bend, making it valuable for enhancing the survivability of FSOC systems. In this study, we first examined the effects of truncation methods on the Airy diffraction-free range and found out that the aperture-truncated Airy (ati-Airy) beam is more preferable in terms of propagation distance. Then, the scintillation behavior of ati-Airy beams is investigated under the conditions of controlled self-bending as well as self-healing from obstructions.

Pages: 65 to 70

Copyright: Copyright (c) IARIA, 2018

Publication date: April 22, 2018

Published in: conference

ISSN: 2308-4480

ISBN: 978-1-61208-624-8

Location: Athens, Greece

Dates: from April 22, 2018 to April 26, 2018