Accession Number:

ADD019048

Title:

Quasi-Static Fiber Pressure Sensor.

Descriptive Note:

Patent Application, Filed 24 Sep 98,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1998-09-24

Pagination or Media Count:

15.0

Abstract:

This invention is a quasi-static fiber pressure sensor using self-referenced interferometry based on a broadband semiconductor source which probes the pressure plate deflection within a Fabry-Perot cavity where phase is demodulated with a dual grating spectrometer providing real-time high resolution remote measurement of pressure using optical interrogation of a deflecting pressure plate. This technique yields absolute gap measurement in real time over a wide range of gap lengths with nanometer resolution. By tailoring the pressure plate design to cover the range of gaps and deflection that can be resolved. pressure sensing with psi resolution can be obtained in a kpsig pressure range.

Subject Categories:

  • Electrical and Electronic Equipment
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE