GB2157842B - Optical fibre sensing apparatus - Google Patents

Optical fibre sensing apparatus

Info

Publication number
GB2157842B
GB2157842B GB08514979A GB8514979A GB2157842B GB 2157842 B GB2157842 B GB 2157842B GB 08514979 A GB08514979 A GB 08514979A GB 8514979 A GB8514979 A GB 8514979A GB 2157842 B GB2157842 B GB 2157842B
Authority
GB
United Kingdom
Prior art keywords
optical fibre
sensing apparatus
fibre sensing
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
GB08514979A
Other versions
GB8514979D0 (en
GB2157842A (en
Inventor
Michael Laurence Henning
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.)
Plessey Co Ltd
Original Assignee
Plessey Co 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
Priority claimed from GB08400601A external-priority patent/GB2152689B/en
Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB08514979A priority Critical patent/GB2157842B/en
Publication of GB8514979D0 publication Critical patent/GB8514979D0/en
Publication of GB2157842A publication Critical patent/GB2157842A/en
Application granted granted Critical
Publication of GB2157842B publication Critical patent/GB2157842B/en
Expired legal-status Critical Current

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
    • G01J9/04—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength by beating two waves of a same source but of different frequency and measuring the phase shift of the lower frequency obtained
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
GB08514979A 1984-01-11 1985-06-13 Optical fibre sensing apparatus Expired GB2157842B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08514979A GB2157842B (en) 1984-01-11 1985-06-13 Optical fibre sensing apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08400601A GB2152689B (en) 1984-01-11 1984-01-11 Optical fibre sensing apparatus
GB08514979A GB2157842B (en) 1984-01-11 1985-06-13 Optical fibre sensing apparatus

Publications (3)

Publication Number Publication Date
GB8514979D0 GB8514979D0 (en) 1985-07-17
GB2157842A GB2157842A (en) 1985-10-30
GB2157842B true GB2157842B (en) 1987-06-24

Family

ID=26287172

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08514979A Expired GB2157842B (en) 1984-01-11 1985-06-13 Optical fibre sensing apparatus

Country Status (1)

Country Link
GB (1) GB2157842B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2288016B (en) * 1994-03-31 1998-05-13 Tomra Systems As Device for generating,detecting and recognizing a contour image of a liquid container
US9044140B2 (en) 2004-06-30 2015-06-02 University Of Rochester Photodynamic therapy with spatially resolved dual spectroscopic monitoring
US8107710B2 (en) 2008-05-23 2012-01-31 University Of Rochester Automated placental measurement
EP2328480B1 (en) 2008-07-18 2016-01-06 University Of Rochester Low-cost device for c-scan photoacoustic imaging

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1538969A (en) * 1977-03-31 1979-01-24 Standard Telephones Cables Ltd Electro optic switch
US4152043A (en) * 1977-08-25 1979-05-01 Bell Telephone Laboratories, Incorporated Electrostatic optical switch with electrical connection to coated optical fiber
US4278327A (en) * 1979-11-26 1981-07-14 Sperry Corporation Liquid crystal matrices
DE3201128C2 (en) * 1981-01-17 1985-08-29 Omron Tateisi Electronics Co., Kyoto Optical switching device

Also Published As

Publication number Publication date
GB8514979D0 (en) 1985-07-17
GB2157842A (en) 1985-10-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee
728C Application made for restoration (sect. 28/1977)
728R Application refused (sect. 28/1977)