Title:
RUGGED FABRY-PEROT PRESSURE SENSOR
Document Type and Number:
WIPO Patent Application WO2005033643
Kind Code:
A3
Abstract:
A pressure sensor (100) and system for measuring pressure changes, especially in harsh environments, is described. The pressure sensor has a Fabry-Perot optical cavity formed within a tube (115) with a partial reflective mirror (130) provided by an end of an optical fiber (105) and a reflective mirror (135) provided by an end of a plug (120), with a gap (125) formed between. The pressure sensor may be disposed within a sensing chamber of a housing having an opening into the environment to be monitored. Alternatively, an isolator means may be used to isolate the sensor from the environment while communicating pressure changes to the sensing chamber. In another embodiment, the sensing chamber is filled with a compressible non-flowing material.
Inventors:
SCHMIDT SIEGMAR (US)
Application Number:
PCT/US2004/032090
Publication Date:
July 28, 2005
Filing Date:
October 01, 2004
Export Citation:
Assignee:
SABEUS PHOTONICS INC (US)
SCHMIDT SIEGMAR (US)
SCHMIDT SIEGMAR (US)
International Classes:
G01B9/02; G01L9/00; G01L; (IPC1-7): G01B9/02
Foreign References:
| US5301001A | 1994-04-05 | |||
| US5907403A | 1999-05-25 | |||
| US6069686A | 2000-05-30 | |||
| US6567173B1 | 2003-05-20 | |||
| US6141087A | 2000-10-31 |
Other References:
See also references of EP 1668314A4
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