AU8638191A - Variable gain optical sensing system - Google Patents

Variable gain optical sensing system

Info

Publication number
AU8638191A
AU8638191A AU86381/91A AU8638191A AU8638191A AU 8638191 A AU8638191 A AU 8638191A AU 86381/91 A AU86381/91 A AU 86381/91A AU 8638191 A AU8638191 A AU 8638191A AU 8638191 A AU8638191 A AU 8638191A
Authority
AU
Australia
Prior art keywords
sensing system
variable gain
optical sensing
gain optical
variable
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.)
Abandoned
Application number
AU86381/91A
Other languages
English (en)
Inventor
Christopher Lamb
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
GEC Marconi Ltd
Marconi 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 GEC Marconi Ltd, Marconi Co Ltd filed Critical GEC Marconi Ltd
Publication of AU8638191A publication Critical patent/AU8638191A/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
AU86381/91A 1990-10-04 1991-09-26 Variable gain optical sensing system Abandoned AU8638191A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9021549A GB2248498B (en) 1990-10-04 1990-10-04 Variable gain optical sensing system
GB9021549 1990-10-04

Publications (1)

Publication Number Publication Date
AU8638191A true AU8638191A (en) 1992-04-28

Family

ID=10683205

Family Applications (1)

Application Number Title Priority Date Filing Date
AU86381/91A Abandoned AU8638191A (en) 1990-10-04 1991-09-26 Variable gain optical sensing system

Country Status (3)

Country Link
AU (1) AU8638191A (fr)
GB (1) GB2248498B (fr)
WO (1) WO1992006358A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5557400A (en) * 1995-02-15 1996-09-17 Hewlett-Packard Company Multiplexed sensing using optical coherence reflectrometry
US5698848A (en) * 1995-06-07 1997-12-16 Mcdonnell Douglas Corporation Fiber optic sensing systems and methods including contiguous optical cavities
GB9710057D0 (en) 1997-05-19 1997-07-09 King S College London Distributed sensing system
US6274863B1 (en) 1999-07-23 2001-08-14 Cidra Corporation Selective aperture arrays for seismic monitoring

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190262B (en) * 1986-05-09 1990-09-05 Stc Plc Sensor
GB2202046A (en) * 1987-03-11 1988-09-14 Plessey Co Plc Optical fibre sensor arrangement
GB2222247A (en) * 1988-08-23 1990-02-28 Plessey Co Plc Distributed fibre optic sensor system

Also Published As

Publication number Publication date
GB2248498B (en) 1994-04-13
GB2248498A (en) 1992-04-08
WO1992006358A1 (fr) 1992-04-16
GB9021549D0 (en) 1991-06-12

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