The Development of a Fiber-Optic Readout Pressure Transducer
Final rept. Jun 1990-Jan 1991
BATTELLE MEMORIAL INST RESEARCH TRIANGLE PARK NC
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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 fibers 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 diaphragms deflection. The return signal is sent to a photodetector and analyzed for pressure variations.
- Test Facilities, Equipment and Methods
- Fiber Optics and Integrated Optics