Open AccessIntensity of vortex modes carried by Lommel beam in weak-to-strong non-Kolmogorov turbulence
Author(s) -
Lin Yu,
Beibei Hu,
Yixin Zhang
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.019538
Subject(s) - physics , turbulence , optics , angular momentum , free space optical communication , wavelength , light beam , vortex , optical communication , crosstalk , beam (structure) , computational physics , quantum mechanics , mechanics
We investigate the atmospheric turbulence effects on the propagation of vortex modes carried by Lommel beam. The analytic expression of the received signal and crosstalk mode intensity is derived based on the weak-to-strong non-Kolmogorov turbulence theory. The simulation results show that turbulence with small non-Kolmogorov spectrum parameter, small inner-scale factor and large outer-scale factor is more likely to induce modal crosstalk. With the increment of turbulence strength, the crosstalk spreads from adjacent modes to peripheral modes. The received signal intensity can be improved by use of Lommel beam with small asymmetry parameter, low orbital angular momentum quantum number and long wavelength. The results are helpful to the design of orbital angular momentum based free-space optical communication link.