GB2147758B - Optical detecting and/or measuring - Google Patents

Optical detecting and/or measuring

Info

Publication number
GB2147758B
GB2147758B GB08322715A GB8322715A GB2147758B GB 2147758 B GB2147758 B GB 2147758B GB 08322715 A GB08322715 A GB 08322715A GB 8322715 A GB8322715 A GB 8322715A GB 2147758 B GB2147758 B GB 2147758B
Authority
GB
United Kingdom
Prior art keywords
measuring
optical detecting
detecting
optical
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
GB08322715A
Other versions
GB2147758A (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.)
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
Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB08322715A priority Critical patent/GB2147758B/en
Priority to GB08416306A priority patent/GB2145514B/en
Publication of GB2147758A publication Critical patent/GB2147758A/en
Application granted granted Critical
Publication of GB2147758B publication Critical patent/GB2147758B/en
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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
    • G01R15/248—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using a constant light source and electro-mechanically driven deflectors
    • 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)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Optical Transform (AREA)
GB08322715A 1983-08-24 1983-08-24 Optical detecting and/or measuring Expired GB2147758B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB08322715A GB2147758B (en) 1983-08-24 1983-08-24 Optical detecting and/or measuring
GB08416306A GB2145514B (en) 1983-08-24 1984-06-27 Optical detecting and/or measuring systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08322715A GB2147758B (en) 1983-08-24 1983-08-24 Optical detecting and/or measuring

Publications (2)

Publication Number Publication Date
GB2147758A GB2147758A (en) 1985-05-15
GB2147758B true GB2147758B (en) 1987-08-05

Family

ID=10547769

Family Applications (2)

Application Number Title Priority Date Filing Date
GB08322715A Expired GB2147758B (en) 1983-08-24 1983-08-24 Optical detecting and/or measuring
GB08416306A Expired GB2145514B (en) 1983-08-24 1984-06-27 Optical detecting and/or measuring systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB08416306A Expired GB2145514B (en) 1983-08-24 1984-06-27 Optical detecting and/or measuring systems

Country Status (1)

Country Link
GB (2) GB2147758B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166020B (en) * 1984-09-29 1988-05-18 Plessey Co Plc Otdr-uses multiple frequencies to detect distortions in an optical fibre
GB2182223A (en) * 1985-10-23 1987-05-07 Stc Plc Optical fibre reflectometer
US4717253A (en) * 1985-11-22 1988-01-05 Massachusetts Institute Of Technology Optical strain gauge
GB2189880B (en) * 1986-04-30 1989-12-28 Plessey Co Plc Optical sensor system
GB2192984B (en) * 1986-07-25 1990-07-18 Plessey Co Plc Optical sensing arrangements
US4725728A (en) * 1986-08-13 1988-02-16 The United States Of America As Represented By The Secretary Of The Navy Fiber optical time delay resonant oscillating strain gauge
US4974961A (en) * 1986-09-12 1990-12-04 Jackson David A Optical fibre measuring system
GB2199135B (en) * 1986-12-10 1990-11-07 Plessey Co Plc Improvements relating to optical sensing arrangements
GB2202046A (en) * 1987-03-11 1988-09-14 Plessey Co Plc Optical fibre sensor arrangement
GB2242267A (en) * 1989-02-10 1991-09-25 Plessey Co Plc Sonar detector
US5485296A (en) * 1989-07-29 1996-01-16 British Telecommunications Public Limited Company Monitor unit for monitoring an optical waveguide
GB8917488D0 (en) * 1989-07-31 1989-09-13 British Telecomm A monitor unit for monitoring an optical waveguide
GB9026587D0 (en) * 1990-12-06 1991-04-24 Marconi Gec Ltd Improvements relating to optical fibre coil assemblies
GB0113766D0 (en) * 2001-05-31 2003-02-26 Bae Systems Plc Improvements relating to optical delay lines
AU2015200314B2 (en) * 2009-05-27 2017-02-02 Silixa Limited Method and apparatus for optical sensing
GB2517322B (en) 2009-05-27 2016-02-24 Silixa Ltd Apparatus for optical sensing
EP2598855B1 (en) 2010-08-19 2016-03-23 Halliburton Energy Services, Inc. Optical pressure sensor
CN102564642B (en) * 2012-02-21 2013-08-07 中国计量学院 Fully-distributed optical fiber sensor for optical fiber Raman frequency shifter fused with Raman amplification effect
CN107045207A (en) * 2017-06-07 2017-08-15 中国科学院半导体研究所 Train of pulse produces the structure controlled with time domain pattern

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2460582A1 (en) * 1979-06-29 1981-01-23 Thomson Csf OPTICAL FIBER HYDROPHONE MONOMODE OPERATING BY ELASTOOPTIC EFFECT
JPS58182524A (en) * 1982-04-20 1983-10-25 Sumitomo Electric Ind Ltd System for detecting change in light frequency

Also Published As

Publication number Publication date
GB2145514B (en) 1986-12-17
GB2147758A (en) 1985-05-15
GB8416306D0 (en) 1984-08-01
GB2145514A (en) 1985-03-27

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920824