DK2929377T3 - Polariseringsscrambling i interferometersystemer - Google Patents

Polariseringsscrambling i interferometersystemer Download PDF

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Publication number
DK2929377T3
DK2929377T3 DK13859792.7T DK13859792T DK2929377T3 DK 2929377 T3 DK2929377 T3 DK 2929377T3 DK 13859792 T DK13859792 T DK 13859792T DK 2929377 T3 DK2929377 T3 DK 2929377T3
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Denmark
Prior art keywords
interferometer
output
scans
polarization
output scans
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DK13859792.7T
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English (en)
Inventor
Brooks A Childers
Roger Glen Duncan
Ajit Balagopal
Dan R Provenzano
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Baker Hughes A Ge Co Llc
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Publication of DK2929377T3 publication Critical patent/DK2929377T3/da

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    • 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
    • G01J4/00—Measuring polarisation of light
    • 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
    • G01D5/35316—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 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
    • G01D5/35383—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 multiple sensor devices using multiplexing techniques
    • G01D5/35393—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 multiple sensor devices using multiplexing techniques using frequency division multiplexing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Communication System (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Claims (12)

1. Interferometer-baseret sensorsystem, omfattende: en indstillelig laser (120) konfigureret til at sende et sendesignal; en polariseringsscrambler (140); et interferometer (117); og en processor (130) kendetegnet ved, at polariseringsscrambleren (140) er konfigureret til at frembringe en polariseringstilstandsændring på sendesignalet forud for hver aftastning; interferometeret (115) er konfigureret til at tilvejebringe en outputaftastning (310) baseret på sendesignalet med polariseringstilstandsændringen for hver aftastning, hvor interferometeret (115) består af et eller flere Fiber Bragg Gitre (FBG'er) (117) og en reference reflektor (118); og hvor outputaftastningen (310) resulterer fra interferens mellem et refleksionssignal fra referencereflektoren (118) med et refleksionssignal fra et af det ene eller flere FBG'er (117); og ved, at processoren (130) er konfigureret til at behandle outputaftastningen (310).
2. Systemet ifølge krav 1, hvor polariseringstilstandsændringen er tilfældig, og, over en tidsperiode, polariseringstilstande er ensartede.
3. Systemet ifølge krav 1, hvor processoren (130) behandler et antal af outputaftastningerne (310) på samme tid, hvor antallet modtages over en tidsperiode.
4. Systemet ifølge krav 3, hvor processoren (130) udfører et vægtet gennemsnit på antallet af outputaftastningerne (310), hvor hver vægtning er baseret på en amplitude af den respektive outputaftastning (310).
5. Systemet ifølge krav 3, hvor processoren (130) udfører et vægtet gennemsnit på antallet af outputaftastninger (310), hvor hver vægtning er baseret på et signal-til-støj-forhold af den respektive outputaftastning (310).
6. Systemet ifølge krav 3, hvor processoren (130) bruger et glidende vindue til at vælge antallet af outputaftastningerne (310).
7. Fremgangsmåde til opnåelse og behandling af interferometer-outputaftastninger (310), hvilken fremgangsmåde omfatter: at anbringe en polariseringsscrambler (140) mellem en indstillelig laser (120) og et interferometer (115); kendetegnet ved, at interferometeret (115) omfatter et eller flere Fiber Bragg Gitre (FBG'er) (117) og en referencereflektor (118); og ved, at fremgangsmåden yderligere omfatter at ændre en polariseringstilstand af hvert signal fra den indstillelige laser (120) med polariseringsscrambleren for at generere hvert polariseringsscramblede signal; at modtage hver af outputaftastningerne (310) fra interferometeret (115) baseret på hvert af de polariseringsscramblede signaler for hver aftastning (310), hvor hver af outputaftastningerne (310) resulterer fra interferens mellem et refleksionssignal fra refleksionsreflektoren (118) med et refleksionssignal fra et af det ene eller flere FBG'er (117); og at behandle outputaftastningerne (310).
8. Fremgangsmåden ifølge krav 7, hvor ændringen af polariseringstilstanden inkluderer at generere en ensartet sampling af polariseringstilstande over tid.
9. Fremgangsmåden ifølge krav 7, hvor behandlingen af outputaftastningerne (310) inkluderer at bestemme et vægtet gennemsnit af et antal af outputaftastningerne (310).
10. Fremgangsmåden ifølge krav 9, hvor bestemmelsen af det vejede gennemsnit inkluderer vægtning af hver af outputaftastningerne (310) af antallet af outputaftastningerne (310) baseret på en amplitude af den respektive outputaftastning (310).
11. Fremgangsmåden ifølge krav 9, hvor bestemmelsen af det vejede gennemsnit sker på en glidende vindue-måde, hvor en af antallet af outputaftastningerne (310) er forskellig i hvert af de vejede gennemsnit.
12. Fremgangsmåden ifølge krav 9, hvor bestemmelsen af det vejede gennemsnit inkluderer vægtning af hver af outputaftastningerne (310) af antallet af outputaftastningerne (310) baseret på et signal-til-støj-forhold af den respektive outputaftastning (310).
DK13859792.7T 2012-12-07 2013-11-01 Polariseringsscrambling i interferometersystemer DK2929377T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/707,979 US9291505B2 (en) 2012-12-07 2012-12-07 Polarization scrambling in interferometer systems
PCT/US2013/068068 WO2014088738A1 (en) 2012-12-07 2013-11-01 Polarization scrambling in interferometer systems

Publications (1)

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DK2929377T3 true DK2929377T3 (da) 2018-07-02

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Country Status (8)

Country Link
US (1) US9291505B2 (da)
EP (1) EP2929377B8 (da)
AU (1) AU2013356575B2 (da)
BR (1) BR112015011943B1 (da)
CA (1) CA2893085C (da)
DK (1) DK2929377T3 (da)
NO (1) NO3008053T3 (da)
WO (1) WO2014088738A1 (da)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6226897B2 (ja) * 2015-02-20 2017-11-08 アンリツ株式会社 Ｏｆｄｒ装置および方法
US10677661B2 (en) 2016-11-09 2020-06-09 Northeastern University Stop-start method in a microfluidic calorimeter

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US5104222A (en) 1990-09-18 1992-04-14 The United States Of America As Represented By The Secretary Of The Navy System and method for minimizing input polarization-induced phase noise in an interferometric fiber-optic sensor depolarized input light
NO322073B1 (no) 1999-06-23 2006-08-07 Optoplan As Fremgangsmate for polarisasjonskontroll
WO2002021170A1 (en) * 2000-09-05 2002-03-14 Arroyo Optics, Inc. System and method for fabricating components of precise optical path length
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Also Published As

Publication number Publication date
CA2893085C (en) 2017-11-14
WO2014088738A1 (en) 2014-06-12
EP2929377A1 (en) 2015-10-14
US20140160483A1 (en) 2014-06-12
BR112015011943A8 (pt) 2019-10-08
BR112015011943A2 (pt) 2017-07-11
NO3008053T3 (da) 2018-08-18
AU2013356575B2 (en) 2016-08-25
BR112015011943B1 (pt) 2022-02-15
EP2929377A4 (en) 2016-07-13
US9291505B2 (en) 2016-03-22
AU2013356575A1 (en) 2015-05-28
CA2893085A1 (en) 2014-06-12
EP2929377B1 (en) 2018-04-25
EP2929377B8 (en) 2018-06-06

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