Propagation properties of quantized Laguerre-Gaussian beams in atmospheric turbulence

Aya Saito; Ayano Tanabe; Makoto Kurihara; Nobuyuki Hashimoto; Kayo Ogawa

doi:10.1117/12.2212517

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15 March 2016 Propagation properties of quantized Laguerre-Gaussian beams in atmospheric turbulence

Aya Saito, Ayano Tanabe, Makoto Kurihara, Nobuyuki Hashimoto, Kayo Ogawa

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Proceedings Volume 9739, Free-Space Laser Communication and Atmospheric Propagation XXVIII; 973914 (2016) https://doi.org/10.1117/12.2212517
Event: SPIE LASE, 2016, San Francisco, California, United States

Abstract

Effect of scintillations is serious problems in optical systems which require the atmospheric propagation, the optimization of optical system to minimize the effects of scintillation have been examined using the simulation of propagation in atmospheric turbulence. The analytic studies of scintillation index of LG beams show that LG beams have less scintillation than Gaussian beams. However, in these researches, the diameter of receiving aperture was set as point receiver without considering the effects of aperture averaging, which is phenomenon that reduced scintillations over finite aperture. In this paper, considering size of a receiving aperture, the propagation losses and the scintillation index of LG beams are simulated. Also, for practical applications, propagation properties of "quantized" LG(5,1) beams simulated. As a result of the examination, the propagation losses and the scintillation index of LG beams is smaller than those of Gaussian beams. By applying LG beams for optical wireless communications, it is expected to improve better the effect of scintillations than using Gaussian beams. The result is that the scintillation index of quantized LG beams is equal to those of LG beams, and it suggested that quantized LG beams can be treat the quantized LG beams the same as LG beams.

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Aya Saito, Ayano Tanabe, Makoto Kurihara, Nobuyuki Hashimoto, and Kayo Ogawa "Propagation properties of quantized Laguerre-Gaussian beams in atmospheric turbulence", Proc. SPIE 9739, Free-Space Laser Communication and Atmospheric Propagation XXVIII, 973914 (15 March 2016); https://doi.org/10.1117/12.2212517

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