Aperture averaging and BER for Gaussian beam in underwater oceanic turbulence

Gökçe M. C., Baykal Y.

OPTICS COMMUNICATIONS, vol.410, pp.830-835, 2018 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 410
  • Publication Date: 2018
  • Doi Number: 10.1016/j.optcom.2017.11.049
  • Journal Name: OPTICS COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.830-835
  • Keywords: Oceanic propagation, Optical communications, Aperture averaging, Scintillation, BIT ERROR RATE, LASER-BEAM, OPTICAL SCINTILLATIONS, SPHERICAL WAVES, LIGHT, PROPAGATION, PERFORMANCE, PLANE
  • TED University Affiliated: No

Abstract

In an underwater wireless optical communication (UWOC) link, power fluctuations over finite-sized collecting lens are investigated for a horizontally propagating Gaussian beam wave. The power scintillation index, also known as the irradiance flux variance, for the received irradiance is evaluated in weak oceanic turbulence by using the Rytov method. This lets us further quantify the associated performance indicators, namely, the aperture averaging factor and the average bit-error rate (). The effects on the UWOC link performance of the oceanic turbulence parameters, i.e., the rate of dissipation of kinetic energy per unit mass of fluid, the rate of dissipation of mean-squared temperature, Kolmogorov microscale, the ratio of temperature to salinity contributions to the refractive index spectrum as well as system parameters, i.e., the receiver aperture diameter, Gaussian source size, laser wavelength and the link distance are investigated. (c) 2017 Elsevier B.V. All rights reserved.