Design of a Digital Interferometric Demodulator.

Abstract

This thesis investigates the design of a digital fiber-optic interferometric demodulator based upon a passive symmetric combination of signals produced by an interferometer terminated with a 3x3 optical coupler. The demodulator was implemented using a digital signal processing (DSP) board based upon a TMS320C31 DSP processor. The demodulator was tested using signals produced by a set of interferometric simulators which used an analog AD639 trigonometric chip. A goal of this thesis was to demonstrate an improved noise floor at low frequencies as compared with a similar analog implementation.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1994
Accession Number
ADA288895

Entities

People

  • David W. Brenner

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Acoustics
  • Assembly Languages
  • C Programming Language
  • Computer Programming
  • Computers
  • Demodulators
  • Detection
  • Detectors
  • Digital Signal Processing
  • Floating Point Operations
  • Frequency
  • Power Spectra
  • Programming Languages
  • Signal Processing
  • Simulations
  • Simulators
  • Waveforms

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Radio communications and signal processing.