SE9504601L - A fiber optic sensor in the form of a Fabry-Pérot interferometer with one or both beam reflecting elements designed as a Bragg grating - Google Patents
A fiber optic sensor in the form of a Fabry-Pérot interferometer with one or both beam reflecting elements designed as a Bragg gratingInfo
- Publication number
- SE9504601L SE9504601L SE9504601A SE9504601A SE9504601L SE 9504601 L SE9504601 L SE 9504601L SE 9504601 A SE9504601 A SE 9504601A SE 9504601 A SE9504601 A SE 9504601A SE 9504601 L SE9504601 L SE 9504601L
- Authority
- SE
- Sweden
- Prior art keywords
- bragg grating
- fabry
- optic sensor
- reflecting elements
- elements designed
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title 1
- 230000003287 optical effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
- G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35306—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement
- G01D5/35309—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer
- G01D5/35312—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer using a Fabry Perot
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The present invention relates to a fibre-optic sensor in the form of a Fabry-Pérot interferometer having one or both beam-reflecting elements designed as a Bragg grating (BG). What especially distinguishes the invention is that the chirp function of at least one Bragg grating is balanced against one non-desired measurand, such that the shift of the centre (xr) of the reflection which is a result of the variation of the non-desired measurand exactly compensates for the optical path difference which this measurand generates in the interferometer. This can be carried out by the chirp function having the form LAMBDA 0(x) = lambda 0/2n0 (1+Ax/BL0-Cx), wherein A, B and C are constants which are determined analytically or experimentally for each different case of desired invariance.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9504601A SE9504601L (en) | 1995-12-22 | 1995-12-22 | A fiber optic sensor in the form of a Fabry-Pérot interferometer with one or both beam reflecting elements designed as a Bragg grating |
AU12198/97A AU1219897A (en) | 1995-12-22 | 1996-12-20 | Fibre-optic sensor in the form of a fabry-perot interferometer having one or both reflecting elements made as a bragg grating |
PCT/SE1996/001731 WO1997023766A1 (en) | 1995-12-22 | 1996-12-20 | Fibre-optic sensor in the form of a fabry-perot interferometer having one or both reflecting elements made as a bragg grating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9504601A SE9504601L (en) | 1995-12-22 | 1995-12-22 | A fiber optic sensor in the form of a Fabry-Pérot interferometer with one or both beam reflecting elements designed as a Bragg grating |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9504601D0 SE9504601D0 (en) | 1995-12-22 |
SE504772C2 SE504772C2 (en) | 1997-04-21 |
SE9504601L true SE9504601L (en) | 1997-04-21 |
Family
ID=20400682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9504601A SE9504601L (en) | 1995-12-22 | 1995-12-22 | A fiber optic sensor in the form of a Fabry-Pérot interferometer with one or both beam reflecting elements designed as a Bragg grating |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU1219897A (en) |
SE (1) | SE9504601L (en) |
WO (1) | WO1997023766A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9828469D0 (en) | 1998-12-24 | 1999-02-17 | British Aerospace | A modulated fibre bragg grating strain gauge assembly for absolute gauging of strain |
US10731969B2 (en) * | 2015-05-12 | 2020-08-04 | Nutech Ventures, Inc. | In-line fiber sensing, noise cancellation and strain detection |
CN105180977B (en) * | 2015-05-27 | 2017-08-25 | 三峡大学 | A kind of single fiber Michelson interference sensor and sensor-based system |
CN113686368A (en) * | 2021-08-24 | 2021-11-23 | 中北大学 | Optical fiber sensor demodulation system and demodulation method for obtaining phase change parameters |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH067049B2 (en) * | 1984-08-13 | 1994-01-26 | ユナイテツド テクノロジ−ズ コ−ポレ−シヨン | Optical fiber strainmeter for dispersive and spaced analysis |
US5042898A (en) * | 1989-12-26 | 1991-08-27 | United Technologies Corporation | Incorporated Bragg filter temperature compensated optical waveguide device |
GB2280968B (en) * | 1993-08-12 | 1996-07-31 | Northern Telecom Ltd | Chirped optical fibre filter |
CA2105605A1 (en) * | 1993-09-07 | 1995-03-08 | Zhuo Jun Lu | Fiber optic sensor system for strain and temperature measurement |
US5399854A (en) * | 1994-03-08 | 1995-03-21 | United Technologies Corporation | Embedded optical sensor capable of strain and temperature measurement using a single diffraction grating |
-
1995
- 1995-12-22 SE SE9504601A patent/SE9504601L/en unknown
-
1996
- 1996-12-20 WO PCT/SE1996/001731 patent/WO1997023766A1/en active Application Filing
- 1996-12-20 AU AU12198/97A patent/AU1219897A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
SE504772C2 (en) | 1997-04-21 |
SE9504601D0 (en) | 1995-12-22 |
WO1997023766A1 (en) | 1997-07-03 |
AU1219897A (en) | 1997-07-17 |
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