Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

On the scintillation index of a multiwavelength Gaussian beam in a turbulent free-space optical communications channel

Not Accessible

Your library or personal account may give you access

Abstract

The scintillation statistics of a multiwavelength Gaussian optical beam are characterized when the beam is subjected to a turbulent optical channel. It is assumed that the level of turbulence in the atmosphere ensures a weak-turbulence scenario and that fluctuations in the signal intensity are due to variations in the refractive index of the medium, which in turn are caused by regional temperature variations due to atmospheric turbulence. Furthermore, it is assumed that the propagation path is nearly horizontal and that the heights of the transmitter and receiver justify a near-ground propagation assumption. The Rytov approximation is used to arrive at the desired results. Furthermore, it is assumed that the first- as well as second-order perturbation terms are present in modeling the impact of atmosphere-induced scintillation. Numerical results are presented to shed light on the performance of multiwavelength optical radiation in weak turbulence and to underscore the benefits of the proposed approach as compared with its single-wavelength counterpart in combating the effect of turbulence. Furthermore, it is shown that if the separation of wavelengths used is sufficiently large, wavelength separation affects the scintillation index in a measurable way.

© 2006 Optical Society of America

Full Article  |  PDF Article
More Like This
Scintillation index of a multiwavelength beam in turbulent atmosphere

Kamran Kiasaleh
J. Opt. Soc. Am. A 21(8) 1452-1454 (2004)

Scintillation index for two Gaussian laser beams with different wavelengths in weak atmospheric turbulence

Avner Peleg and Jerome V. Moloney
J. Opt. Soc. Am. A 23(12) 3114-3122 (2006)

Scintillations of cos-Gaussian and annular beams

Halil T. Eyyuboğlu and Yahya Baykal
J. Opt. Soc. Am. A 24(1) 156-162 (2007)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (66)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved