Phase Coherent Digital Communications for Wireless Optical Links in Turbid Underwater Environments

Abstract

Previous studies by the authors have included a theoretical and experimental investigation of the spatial distribution of an optical signal used for communications in underwater scattering environments. Presented here is an experimental study of how scattering affects the temporally encoded information bearing component of the optical signal. Short range underwater optical links employing BPSK, QPSK, 8- PSK, 16-QAM, and 32-QAM modulation are implemented in a laboratory setting, yielding data rates up to 5Mb/s. The effect of link quality is examined versus water turbidity.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2007
Accession Number
ADA518938

Entities

People

  • Alan Laux
  • Brandon Cochenour
  • Linda Mullen

Organizations

  • Naval Air Systems Command

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Amplitude Modulation
  • Data Rate
  • Digital Communications
  • Electro-Optic Modulators
  • Environment
  • Frequency
  • Intensity
  • Lasers
  • Measurement
  • Modulation
  • Modulators
  • Optical Communications
  • Power Levels
  • Repetition Rate
  • Signal Generators
  • Water Tanks

Fields of Study

  • Physics

Readers

  • Marine Mammal Biology
  • Radio communications and signal processing.
  • Spectroscopy.