DE3467628D1 - Polarised light optical sensing arrangements - Google Patents

Polarised light optical sensing arrangements

Info

Publication number
DE3467628D1
DE3467628D1 DE8484303254T DE3467628T DE3467628D1 DE 3467628 D1 DE3467628 D1 DE 3467628D1 DE 8484303254 T DE8484303254 T DE 8484303254T DE 3467628 T DE3467628 T DE 3467628T DE 3467628 D1 DE3467628 D1 DE 3467628D1
Authority
DE
Germany
Prior art keywords
path length
optical sensor
polarised light
length difference
optical sensing
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DE8484303254T
Other languages
English (en)
Inventor
John Philip Dakin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAE Systems Electronics Ltd
Original Assignee
Plessey Overseas 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 Plessey Overseas Ltd filed Critical Plessey Overseas Ltd
Application granted granted Critical
Publication of DE3467628D1 publication Critical patent/DE3467628D1/de
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
DE8484303254T 1983-05-26 1984-05-14 Polarised light optical sensing arrangements Expired DE3467628D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8314570 1983-05-26

Publications (1)

Publication Number Publication Date
DE3467628D1 true DE3467628D1 (en) 1987-12-23

Family

ID=10543402

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484303254T Expired DE3467628D1 (en) 1983-05-26 1984-05-14 Polarised light optical sensing arrangements

Country Status (7)

Country Link
US (1) US4638153A (de)
EP (1) EP0129972B1 (de)
JP (1) JPS59226821A (de)
AT (1) ATE30967T1 (de)
AU (1) AU566933B2 (de)
DE (1) DE3467628D1 (de)
NZ (1) NZ208276A (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6147513A (ja) * 1984-08-13 1986-03-08 Fujikura Ltd 光フアイバセンサ
US4773753A (en) * 1985-09-03 1988-09-27 Daiichi Denshi Kogyo Kabushiki Kaisha Fiber sensor
FR2626429B1 (fr) * 1988-01-25 1990-05-11 Thomson Csf Hydrophone a fibre optique et antenne associant une serie d'hydrophones
US5072110A (en) * 1989-09-05 1991-12-10 Canadian Marconi Company Fiber optic strain and impact sensor system for composite materials
US5384635A (en) * 1993-08-10 1995-01-24 At&T Corp. Remote sensing in optical fiber networks by synchronously detecting backscattered optical signals
NO303470B1 (no) * 1994-12-16 1998-07-13 Safety One As FremgangsmÕte og system til kontinuerlig og global overvÕking av dynamiske belastninger
US5850375A (en) * 1996-07-30 1998-12-15 Seagate Technology, Inc. System and method using optical fibers in a data storage and retrieval system
US6298027B1 (en) 1998-03-30 2001-10-02 Seagate Technology Llc Low-birefringence optical fiber for use in an optical data storage system
US6587421B1 (en) 1998-03-30 2003-07-01 Seagate Technology Llc Refractive index matching means coupled to an optical fiber for eliminating spurious light
US6574015B1 (en) 1998-05-19 2003-06-03 Seagate Technology Llc Optical depolarizer
CN106872912B (zh) * 2015-12-10 2023-10-17 哈尔滨理工大学 一种基于温度补偿高灵敏度远距离光纤磁场传感装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441049A (en) * 1944-09-29 1948-05-04 Polaroid Corp Composite achromatic wave plates comprising superimposed sheets of differently birefringent, molecularly oriented, transparent, solid, organic plastic material
US4198123A (en) * 1977-03-23 1980-04-15 Baxter Travenol Laboratories, Inc. Optical scrambler for depolarizing light
US4215576A (en) * 1979-01-22 1980-08-05 Rockwell International Corporation Optical temperature sensor utilizing birefringent crystals
US4442350A (en) * 1981-08-17 1984-04-10 The United States Of America As Represented By The Secretary Of The Navy Fiber optic sensor with enhanced immunity to random environmental perturbations
JPS58129372A (ja) * 1982-01-29 1983-08-02 Sumitomo Electric Ind Ltd 磁界−光変換器
US4515436A (en) * 1983-02-04 1985-05-07 At&T Bell Laboratories Single-mode single-polarization optical fiber
GB2136952B (en) * 1983-03-16 1987-05-07 Standard Telephones Cables Ltd Fabry perot sensor
US4729622A (en) * 1983-12-05 1988-03-08 Litton Systems, Inc. Fiber optic polarizer with error signal feedback

Also Published As

Publication number Publication date
EP0129972B1 (de) 1987-11-19
JPH0422203B2 (de) 1992-04-16
AU2847484A (en) 1984-11-29
EP0129972A1 (de) 1985-01-02
NZ208276A (en) 1987-11-27
US4638153A (en) 1987-01-20
AU566933B2 (en) 1987-11-05
JPS59226821A (ja) 1984-12-20
ATE30967T1 (de) 1987-12-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: GEC-MARCONI LTD., STANMORE, GB

8328 Change in the person/name/address of the agent

Free format text: PRINZ, E., DIPL.-ING. LEISER, G., DIPL.-ING. SCHWEPFINGER, K., DIPL.-ING. BUNKE, H., DIPL.-CHEM. DR.RER.NAT. DEGWERT, H., DIPL.-PHYS., PAT.-ANWAELTE, 8000 MUENCHEN

8339 Ceased/non-payment of the annual fee