BR0309675A - Sensor a laser de fibra de alta resolução - Google Patents

Sensor a laser de fibra de alta resolução

Info

Publication number
BR0309675A
BR0309675A BR0309675-0A BR0309675A BR0309675A BR 0309675 A BR0309675 A BR 0309675A BR 0309675 A BR0309675 A BR 0309675A BR 0309675 A BR0309675 A BR 0309675A
Authority
BR
Brazil
Prior art keywords
fiber
laser
sensor
fiber laser
optical states
Prior art date
Application number
BR0309675-0A
Other languages
English (en)
Other versions
BRPI0309675B1 (pt
Inventor
Klaus Bohnert
Karim Haroud
Andreas Frank
Hubert Brondle
Original Assignee
Abb Research Ltd
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 Abb Research Ltd filed Critical Abb Research Ltd
Publication of BR0309675A publication Critical patent/BR0309675A/pt
Publication of BRPI0309675B1 publication Critical patent/BRPI0309675B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/0675—Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
    • 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
    • G01D5/344—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 using polarisation
    • 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
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • G01L11/02—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means
    • G01L11/025—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means using a pressure-sensitive optical fibre
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06712—Polarising fibre; Polariser
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08—Construction or shape of optical resonators or components thereof
    • H01S3/08018—Mode suppression
    • H01S3/08022—Longitudinal modes
    • H01S3/08031—Single-mode emission
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/105—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
    • H01S3/1053—Control by pressure or deformation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Optical Transform (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

"SENSOR A LASER DE FIBRA DE ALTA RESOLUçãO". A presente invenção refere-se a um sensor a laser de fibra de alta resolução para medir uma quantidade a ser medida (M), que tem uma fonte de luz de bombeamento (2), um laser de fibra (1) e uma unidade de detecção/ avaliação (3). O laser de fibra (1) tem: um primeiro refletor de extremidade birrefringente (11) e um segundo refletor de extremidade (12), uma fibra de amplificação de laser (13), uma fibra sensora (14) e um meio para acoplamento de modo (15). A fibra de amplificação de laser (13), a fibra sensora (14) e o meio para acoplamento de modo (15) são dispostos entre o refletores de extremidade (11, 12). No laser de fibra (1), luz é capaz de se propagar em dois estados óticos (x,y; LP<39>~ 01~,LP<39>~ 11~), que são ortogonais um ao outro devido a sua polarização e/ou sua estrutura de espaço transversal. Os estados óticos ortogonais (x,y; LP<39>~ 01~,LP<39>~ 11~) podem ser acoplados um ao outro pelo meio para acoplamento de modo (15). No laser de fibra (1) um número de modos longitudinais (LM^ x^~ p~, LM^ x^~ p+1~..., LM^ y^~ q~, LM^ y^~ q+1~..., LM^ 01^~ p~, LM^ 01^~ p+1~..., LM^ 11^~ q~, LM^ 11^~ q+1~...) são capazes de oscilar em cada um dos dois estados óticos (x,y; LP<39>~ 01~,LP<39>~ 11~). Na fibra sensora (14) uma mudança na birrefringência para os dois estados óticos ortogonais (x,y; LP<39>~ 01~,LP<39>~ 11~) pode ser obtida pela interação da quantidade a ser medida (M) com a fibra sensora (14). A mudança na birrefringência resulta em uma mudança nas freq³ências de batimento na emissão do laser. Devido ao fato de que o primeiro refletor de extremidade (11) é dessintonizado com relação ao segundo refletor de extremidade (12), é possível detectar sinais de batimento individuais do modo de polarização em lugar de um sinal de batimento que consiste em um número de sinais de PMB degenerados e é, portanto, ampliado. Uma alta resolução de sensor é obtida.
BRPI0309675A 2002-04-30 2003-04-29 sensor a laser de fibra de alta resolução BRPI0309675B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02405353A EP1359394A1 (de) 2002-04-30 2002-04-30 Hochauflösender Faserlaser-Sensor
PCT/CH2003/000277 WO2003093770A1 (de) 2002-04-30 2003-04-29 Hochauflösender faserlaser-sensor

Publications (2)

Publication Number Publication Date
BR0309675A true BR0309675A (pt) 2005-02-15
BRPI0309675B1 BRPI0309675B1 (pt) 2016-11-29

Family

ID=28799767

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0309675A BRPI0309675B1 (pt) 2002-04-30 2003-04-29 sensor a laser de fibra de alta resolução

Country Status (6)

Country Link
US (1) US7251023B2 (pt)
EP (2) EP1359394A1 (pt)
AU (1) AU2003218858A1 (pt)
BR (1) BRPI0309675B1 (pt)
NO (1) NO20045125L (pt)
WO (1) WO2003093770A1 (pt)

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DE102004037519B4 (de) * 2004-07-30 2008-12-18 Universität Kassel Sensor-Vorrichtung und Verfahren zur Ermittlung einer physikalischen Größe
GB0500277D0 (en) * 2005-01-07 2005-02-16 Southampton Photonics Ltd Apparatus for propagating optical radiation
KR100640006B1 (ko) * 2005-10-14 2006-11-01 한국전자통신연구원 광학적 클럭 신호 추출 장치 및 방법
JPWO2007066747A1 (ja) * 2005-12-09 2009-05-21 パナソニック株式会社 ファイバーレーザ
FR2929000B1 (fr) * 2008-03-18 2010-04-09 Thales Sa Capteur a fibre optique auto-reference et reseau de capteurs associe
WO2010054262A1 (en) * 2008-11-07 2010-05-14 The Government Of The United States Of America, As Represented By The Secretary Of The Navy Measurement of fiber twist by polarization tracking
EP2646862B1 (en) * 2010-12-02 2020-09-23 Ofs Fitel Llc Dfb fiber laser bend sensor and optical heterodyne microphone
DE102012214441B4 (de) * 2012-08-14 2020-08-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Messverfahren
EP3036502A4 (en) * 2013-08-23 2017-03-15 FOCE Technology International B.V. Single mode fiber bragg grating pressure sensor
US9341532B2 (en) * 2014-03-24 2016-05-17 General Electric Company Systems and methods for distributed pressure sensing
CN106773014A (zh) * 2016-12-12 2017-05-31 南京大学 一种提高光纤液压传感器灵敏度的复合双腔结构
WO2019205028A1 (zh) * 2018-04-25 2019-10-31 深圳大学 一种光纤激光压力传感器及其压力测量方法
WO2020264056A1 (en) * 2019-06-24 2020-12-30 Nlight, Inc. Functionally homogenized intensity distribution for additive manufacturing or other industrial laser processing applications
US11761828B2 (en) * 2020-04-14 2023-09-19 Ultra Communications, Inc. Single wavelength fiber grating sensing with spatial location
IT202000032027A1 (it) * 2020-12-23 2022-06-23 Brembo Spa Metodo e sistema per interrogare un sensore fibre bragg grating birifrangente, impiegante rilevazione ottica eterodina
CN113049014B (zh) * 2021-03-10 2022-04-15 太原理工大学 一种基于泵浦光扫频的时频复用botda系统及传感方法
US11656140B1 (en) 2022-04-25 2023-05-23 The Government Of The United States Of America, As Represented By The Secretary Of The Navy Coated fiber optic pressure sensor with improved acceleration response

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US5513913A (en) 1993-01-29 1996-05-07 United Technologies Corporation Active multipoint fiber laser sensor
KR960015900B1 (ko) 1993-04-22 1996-11-23 국방과학연구소 광섬유 레이저를 이용한 물리량 측정장치
NO302441B1 (no) * 1995-03-20 1998-03-02 Optoplan As Fiberoptisk endepumpet fiber-laser
GB2323441B (en) * 1997-03-22 2001-02-14 British Aerospace Apparatus for sensing temperature and/or strain in an object
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Also Published As

Publication number Publication date
US7251023B2 (en) 2007-07-31
BRPI0309675B1 (pt) 2016-11-29
EP1499859A1 (de) 2005-01-26
WO2003093770A1 (de) 2003-11-13
EP1359394A1 (de) 2003-11-05
NO20045125L (no) 2005-01-28
US20060013534A1 (en) 2006-01-19
AU2003218858A1 (en) 2003-11-17

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Legal Events

Date Code Title Description
B25A Requested transfer of rights approved

Owner name: ABB OFFSHORE SYSTEMS LTD. (GB)

Free format text: TRANSFERIDO DE: ABB RESEARCH LTD.

B25D Requested change of name of applicant approved

Owner name: VETCO GRAY CONTROLS LIMITED (GB)

Free format text: ALTERADO DE: ABB OFFSHORE SYSTEMS LTD.

B25A Requested transfer of rights approved

Owner name: GE OIL AND GAS UK LIMITED (GB)

B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 29/11/2016, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time
B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)