We study the effects of non-diffraction on the pulse spreading and average intensity of the orbital angular momentum (OAM) mode of a Hankel-Bessel beam propagating through a strong anisotropic marine atmosphere. The average intensity of the OAM mode of the Hankel-Bessel pulse beam is modeled based on the modified Rytov approximation. We find that the pulse width and the average intensity of the received beam are affected by the refractive index structure constant of turbulence as well as the wavelength. The pulse widths of the received OAM signal modes have imperceptible changes for different OAM quantum numbers, and outer and inner scales of turbulence. Our results show that we can choose with longer wavelength light to reduce the impacts of turbulence on the pulse width and average intensity of received OAM signal modes.
© 2017 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
OSA Recommended Articles
Atmospheric turbulence effects on the performance of a free space optical link employing orbital angular momentum multiplexing
Yongxiong Ren, Hao Huang, Guodong Xie, Nisar Ahmed, Yan Yan, Baris I. Erkmen, Nivedita Chandrasekaran, Martin P. J. Lavery, Nicholas K. Steinhoff, Moshe Tur, Samuel Dolinar, Mark Neifeld, Miles J. Padgett, Robert W. Boyd, Jeffrey H. Shapiro, and Alan E. Willner
Opt. Lett. 38(20) 4062-4065 (2013)
Equations on this page are rendered with MathJax. Learn more.