EP0357253A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fibre optic sensor
Assignee: BAE Systems Electronics Ltd
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Filing: 1989-08-04
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Granted: —
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Expires: 2009-08-04
Abstract
Abstract A fibre optic sensor 1 comprises a body 2 of a matrix material which includes an embedded length of optical fibre 3. When the body 2 is exposed to an external disturbance, mechanical and strain forces arising internally can be transmitted to the fibre 3 and will modify the passage of light therein. Pulsed light through the fibre 3 can be sensed for example by interferometry to measure the disturbance. This can provide an inexpensive and sensitive sensor construction which is capable of the remote detection of various parameters.
Inventors
- 👤 Alan Charles Curtis
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 05:42
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/24; G01L1/242; G01L1/243; G01D; G01D5/00; G01D5/26; G01D5/32; G01D5/34; G01D5/353; G01D5/3537; G01D5/35377
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
83 words
A fibre optic sensor comprising a body of a matrix material which includes an embedded length of optical fibre, the body being arranged such that when it is exposed to an external disturbance a transduction effect will cause corresponding mechanical stresses and strains to be developed internally and be applied to said fibre, the resulting stresses and strains in the fibre causing a modification of the light transmission behaviour thereof which can be detected in the passage of light through said fibre length.
Claim 2
Dependent Claim
83 words
A fibre optic sensor comprising a body of a matrix material which includes an embedded length of optical fibre, the body being arranged such that when it is exposed to an external disturbance a transduction effect will cause corresponding mechanical stresses and strains to be developed internally and be applied to said fibre, the resulting stresses and strains in the fibre causing a modification of the light transmission behaviour thereof which can be detected in the passage of light through said fibre length.
Claim 3
Dependent Claim
26 words
A sensor as claimed in Claim 1, in which the fibre is arranged in the form of a coil within the body of said matrix material.
Claim 4
Dependent Claim
22 words
A sensor as claimed in Claim 1, in which the fibre is arranged longitudinally within an elongated body of the matrix material.
Claim 5
Dependent Claim
24 words
A sensor as claimed in any one of Claims 1 to 3, in which the matrix material is composed of two or more phases.
Claim 6
Dependent Claim
20 words
A sensor as claimed in any one of Claims 1 to 4, in which the matrix material has isotropic properties.
Claim 7
Dependent Claim
25 words
A sensor as claimed in any one of Claims 1 to 5, in which the matrix material comprises one continuous phase with another dispersed phase.
Claim 8
Dependent Claim
17 words
A fibre optic sensor substantially as hereinbefore described with reference to any one of the accompanying drawings.
Claim 9
Dependent Claim
17 words
A fibre optic sensor substantially as hereinbefore described with reference to any one of the accompanying drawings.
Claim 10
Dependent Claim
19 words
A optical sensor system comprising a fibre optic sensor as claimed in any one of Claims 1 to 7.
References Cited (Backward Citations)
No citation records indexed.
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