OPTICAL FIBRE BEND SENSOR
An optical fibre bend sensor (10) measures the degree and orientation of bending present in a sensor length (30) portion of a fibre assembly (26). Within a multicored fibre (30, 32, 34), cores (62, 66) are grouped in noncoplanar pairs. An arrangement of optical elements (28, 36, 38) define within ea...
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| creator | LLOYD, PETER ARTHUR HARVEY, ANDREW ROBERT MCBRIDE, ROY BURNETT, JAMES GORDON GREENAWAY, ALAN HOWARD RUSSELL, PHILIP ST. JOHN BLANCHARD, PAUL MICHAEL |
| description | An optical fibre bend sensor (10) measures the degree and orientation of bending present in a sensor length (30) portion of a fibre assembly (26). Within a multicored fibre (30, 32, 34), cores (62, 66) are grouped in noncoplanar pairs. An arrangement of optical elements (28, 36, 38) define within each core pair (62, 66) two optical paths (122, 124) which differ along the sensor length (30): one core (62) of a pair (62, 66) is included in the first path (122), and the other core (66) in the second path (124). A general bending of the sensor region (30) will lengthen one core (62, 66) with respect to the other. Interrogation of this length differential by means of interferometry generates interferograms form which the degree of bending in the plane of the core pair is extracted. Bend orientation can be deduced from data extracted from multiple core pairs. |
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JOHN ; BLANCHARD, PAUL MICHAEL</creatorcontrib><description>An optical fibre bend sensor (10) measures the degree and orientation of bending present in a sensor length (30) portion of a fibre assembly (26). Within a multicored fibre (30, 32, 34), cores (62, 66) are grouped in noncoplanar pairs. An arrangement of optical elements (28, 36, 38) define within each core pair (62, 66) two optical paths (122, 124) which differ along the sensor length (30): one core (62) of a pair (62, 66) is included in the first path (122), and the other core (66) in the second path (124). A general bending of the sensor region (30) will lengthen one core (62, 66) with respect to the other. Interrogation of this length differential by means of interferometry generates interferograms form which the degree of bending in the plane of the core pair is extracted. Bend orientation can be deduced from data extracted from multiple core pairs.</description><edition>7</edition><language>eng ; fre</language><subject>ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS ; MEASURING ; MEASURING ANGLES ; MEASURING AREAS ; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS ; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS ; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE ; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR ; PHYSICS ; TARIFF METERING APPARATUS ; TESTING</subject><creationdate>1998</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19981230&DB=EPODOC&CC=CA&NR=2294150A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19981230&DB=EPODOC&CC=CA&NR=2294150A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LLOYD, PETER ARTHUR</creatorcontrib><creatorcontrib>HARVEY, ANDREW ROBERT</creatorcontrib><creatorcontrib>MCBRIDE, ROY</creatorcontrib><creatorcontrib>BURNETT, JAMES GORDON</creatorcontrib><creatorcontrib>GREENAWAY, ALAN HOWARD</creatorcontrib><creatorcontrib>RUSSELL, PHILIP ST. 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JOHN</creatorcontrib><creatorcontrib>BLANCHARD, PAUL MICHAEL</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>LLOYD, PETER ARTHUR</au><au>HARVEY, ANDREW ROBERT</au><au>MCBRIDE, ROY</au><au>BURNETT, JAMES GORDON</au><au>GREENAWAY, ALAN HOWARD</au><au>RUSSELL, PHILIP ST. JOHN</au><au>BLANCHARD, PAUL MICHAEL</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>OPTICAL FIBRE BEND SENSOR</title><date>1998-12-30</date><risdate>1998</risdate><abstract>An optical fibre bend sensor (10) measures the degree and orientation of bending present in a sensor length (30) portion of a fibre assembly (26). Within a multicored fibre (30, 32, 34), cores (62, 66) are grouped in noncoplanar pairs. An arrangement of optical elements (28, 36, 38) define within each core pair (62, 66) two optical paths (122, 124) which differ along the sensor length (30): one core (62) of a pair (62, 66) is included in the first path (122), and the other core (66) in the second path (124). A general bending of the sensor region (30) will lengthen one core (62, 66) with respect to the other. Interrogation of this length differential by means of interferometry generates interferograms form which the degree of bending in the plane of the core pair is extracted. Bend orientation can be deduced from data extracted from multiple core pairs.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING |
| title | OPTICAL FIBRE BEND SENSOR |
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