The Development of a Fiber-Optic Readout Pressure Transducer

Abstract

An all-optical pressure measurement system has been developed that uses a highly reflective diaphragm as the sensing element for a pressure transducer. This type of pressure transducer offers improved sensitivity, free from electrical and magnetic disturbances. Laser light is reflected off of the fiber's end and from the diaphragm. The reflections travel back into the same fiber and are combined interferometrically to create interference fringes. These fringes shift proportionally to the diaphragm's deflection. The return signal is sent to a photodetector and analyzed for pressure variations.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1991
Accession Number
ADA238393

Entities

People

  • Joseph H. Haritonidis

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Advanced Electronics
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Artillery
  • Climate Change
  • Deflection
  • Detectors
  • High Pressure
  • Lasers
  • Light Sources
  • Magnetic Disturbances
  • Materials
  • Measurement
  • Pressure Measurement
  • Pressure Transducers
  • Reflection
  • Sensitivity
  • Skeletal Muscle
  • Strain Gages
  • Transducers

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Optical Fiber Sensing and Electromagnetic Propagation.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy