WO2007136779A3 - Aligned embossed diaphgragm based fiber optic sensor - Google Patents

Aligned embossed diaphgragm based fiber optic sensor Download PDF

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Publication number
WO2007136779A3
WO2007136779A3 PCT/US2007/011955 US2007011955W WO2007136779A3 WO 2007136779 A3 WO2007136779 A3 WO 2007136779A3 US 2007011955 W US2007011955 W US 2007011955W WO 2007136779 A3 WO2007136779 A3 WO 2007136779A3
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
dfos
sensor
fiber optic
fiber
Prior art date
Application number
PCT/US2007/011955
Other languages
French (fr)
Other versions
WO2007136779A2 (en
Inventor
Ken K Chin
Guanhua Feng
Ivan Padron
Harry Roman
Original Assignee
New Jersey Tech Inst
Ken K Chin
Guanhua Feng
Ivan Padron
Harry Roman
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by New Jersey Tech Inst, Ken K Chin, Guanhua Feng, Ivan Padron, Harry Roman filed Critical New Jersey Tech Inst
Publication of WO2007136779A2 publication Critical patent/WO2007136779A2/en
Publication of WO2007136779A3 publication Critical patent/WO2007136779A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J9/00—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength
    • G01J9/02—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength by interferometric methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0076—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means
    • G01L9/0077—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means for measuring reflected light
    • G01L9/0079—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means for measuring reflected light with Fabry-Perot arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J9/00—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength
    • G01J9/02—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength by interferometric methods
    • G01J2009/0226—Fibres
    • G01J2009/023—Fibres of the integrated optical type

Abstract

The present invention is a diaphragm-fiber optic sensor (DFOS), interferometric sensor. This DFOS is based on the principles of Fabry-Perot and Michelson/Mach-Zehnder. The sensor is low cost and is designed with high efficiency, reliability, and Q-point stability, fabricated using MEMS (micro mechanic- electrical system) technology, and has demonstrated excellent performance. A DFOS according to the invention includes a cavity between two surfaces: a diaphragm made of silicon or other material with a rigid body (or boss) at the center and clamped along its edge, and the endface of a single mode optic fiber. By utilizing MEMS technology, the gap width between the diaphragm and the fiber endface is made accurately, ranging from 1 micron to 10 microns. To stabilize the Q-point of the DFOS when in use as an acoustic sensor, a system of microchannels is built in the structure of the diaphragm so that the pressure difference on two sides of the diaphragm is kept a constant, independent of the hydraulic pressure and/or low frequency noise when the device is inserted in liquid mediums.
PCT/US2007/011955 2006-05-19 2007-05-18 Aligned embossed diaphgragm based fiber optic sensor WO2007136779A2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US80191006P 2006-05-19 2006-05-19
US80194306P 2006-05-19 2006-05-19
US60/801,943 2006-05-19
US60/801,910 2006-05-19
US11/750,569 2007-05-18
US11/750,569 US20080075404A1 (en) 2006-05-19 2007-05-18 Aligned embossed diaphragm based fiber optic sensor

Publications (2)

Publication Number Publication Date
WO2007136779A2 WO2007136779A2 (en) 2007-11-29
WO2007136779A3 true WO2007136779A3 (en) 2008-05-02

Family

ID=38723867

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/011955 WO2007136779A2 (en) 2006-05-19 2007-05-18 Aligned embossed diaphgragm based fiber optic sensor

Country Status (2)

Country Link
US (2) US20080075404A1 (en)
WO (1) WO2007136779A2 (en)

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EP1674833A3 (en) * 2004-12-21 2007-05-30 Davidson Instruments, Inc. Fiber optic sensor system
WO2007109336A2 (en) * 2006-03-22 2007-09-27 Davidson Instruments, Inc. Apparatus for continuous readout of fabry-perot fiber optic sensor
US7684051B2 (en) * 2006-04-18 2010-03-23 Halliburton Energy Services, Inc. Fiber optic seismic sensor based on MEMS cantilever
EP2021747B1 (en) * 2006-04-26 2018-08-01 Halliburton Energy Services, Inc. Fiber optic mems seismic sensor with mass supported by hinged beams
US8115937B2 (en) 2006-08-16 2012-02-14 Davidson Instruments Methods and apparatus for measuring multiple Fabry-Perot gaps
DE102006056592A1 (en) * 2006-11-29 2008-06-05 Endress + Hauser Gmbh + Co. Kg Process for embossing a separating membrane of a diaphragm seal
US7787128B2 (en) * 2007-01-24 2010-08-31 Halliburton Energy Services, Inc. Transducer for measuring environmental parameters
US8098904B2 (en) * 2008-03-31 2012-01-17 Google Inc. Automatic face detection and identity masking in images, and applications thereof
US8269974B2 (en) 2008-06-23 2012-09-18 University Of South Florida Interferometric chemical sensor array
US8054594B2 (en) * 2009-06-18 2011-11-08 General Electric Company ARC flash detection system
US8040517B1 (en) * 2010-04-30 2011-10-18 General Electric Company Arc flash detection system and method
EP2695175B1 (en) 2011-04-04 2019-07-17 Weidmann Electrical Technology, Inc. Clamping force sensor assembly for monitoring transformer degradation
DE102011077499A1 (en) 2011-06-14 2012-12-20 CiS Forschungsinstitut für Mikrosensorik und Photovoltaik GmbH Interferometric pressure measuring cell
US20120321322A1 (en) * 2011-06-16 2012-12-20 Honeywell International Inc. Optical microphone
US8594507B2 (en) * 2011-06-16 2013-11-26 Honeywell International Inc. Method and apparatus for measuring gas concentrations
GB2509105B (en) * 2012-12-20 2017-02-22 Oxsensis Ltd Mechanical resonator sensor
WO2014176522A1 (en) 2013-04-26 2014-10-30 Wicor Holding Ag Fiber-grating sensors having longitudinal-strain-inducing jackets and sensor systems and structures including such sensors
US10053269B2 (en) * 2015-02-09 2018-08-21 The Boeing Company Multi-functional fiber optic fuel sensor system having a photonic membrane
NO343314B1 (en) * 2015-11-29 2019-01-28 Tunable As Optical pressure sensor
CN112119201B (en) * 2018-05-24 2024-02-27 贝克休斯控股有限责任公司 Transducer comprising a laser etched substrate
US20230024104A1 (en) * 2021-07-23 2023-01-26 Nec Laboratories America, Inc Identification of false transformer humming using machine learning
CN113589114A (en) * 2021-07-29 2021-11-02 重庆大学 Power equipment partial discharge sensing device and machining method and detection system thereof

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US6928879B2 (en) * 2003-02-26 2005-08-16 Robert Bosch Gmbh Episeal pressure sensor and method for making an episeal pressure sensor

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Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
US5311485A (en) * 1992-10-30 1994-05-10 The United States Of America As Represented By The United States Department Of Energy Fiber optic hydrophone
US6631638B2 (en) * 2001-01-30 2003-10-14 Rosemount Aerospace Inc. Fluid flow sensor
US20040119981A1 (en) * 2002-09-26 2004-06-24 Russell May Active Q-point stabilization for linear interferometric sensors
US6928879B2 (en) * 2003-02-26 2005-08-16 Robert Bosch Gmbh Episeal pressure sensor and method for making an episeal pressure sensor
US20050134837A1 (en) * 2003-12-23 2005-06-23 Sarkozi Janos G. Detection of partial discharge or arcing in wiring via fiber optics

Also Published As

Publication number Publication date
US20090086214A1 (en) 2009-04-02
US20080075404A1 (en) 2008-03-27
WO2007136779A2 (en) 2007-11-29
US7697797B2 (en) 2010-04-13

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