Long period grating directional bend sensor based on asymmetric index modification of cladding

Thomas D.P. Allsop; Mykhaylo Dubov; Amós Martínez; Filip Floreani; Igor Khrushchev; David J. Webb; Ian Bennion

doi:10.1049/el:20056996

Long period grating directional bend sensor based on asymmetric index modification of cladding

Thomas D.P. Allsop^*, Mykhaylo Dubov, Amós Martínez, Filip Floreani, Igor Khrushchev, David J. Webb, Ian Bennion

^*Corresponding author for this work

College of Engineering and Physical Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

A long period grating (LPG) written in a standard optical fibre was modified by using a femtosecond laser to induce an asymmetric change in the cladding's refractive index. This device produced blue and red wavelength shifts depending on the orientation of applied curvature, with maximum sensitivities of -1.6 nm m and +3.8 nm m, suggesting that this type of LPG may be useful as a shape sensor.

Original language	English
Pages (from-to)	59-60
Number of pages	2
Journal	Electronics letters
Volume	41
Issue number	2
DOIs	https://doi.org/10.1049/el:20056996
Publication status	Published - 20 Jan 2005

Keywords

cladding
finite element method
light sources
optical fibers
photosensitivity
refractive index
spectrum analyzers
standards
waveguides
concave bending
curvature sensors
long period grating
transmission spectrum

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10.1049/el:20056996

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title = "Long period grating directional bend sensor based on asymmetric index modification of cladding",

abstract = "A long period grating (LPG) written in a standard optical fibre was modified by using a femtosecond laser to induce an asymmetric change in the cladding's refractive index. This device produced blue and red wavelength shifts depending on the orientation of applied curvature, with maximum sensitivities of -1.6 nm m and +3.8 nm m, suggesting that this type of LPG may be useful as a shape sensor.",

keywords = "cladding, finite element method, light sources, optical fibers, photosensitivity, refractive index, spectrum analyzers, standards, waveguides, concave bending, curvature sensors, long period grating, transmission spectrum",

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T1 - Long period grating directional bend sensor based on asymmetric index modification of cladding

AU - Allsop, Thomas D.P.

AU - Dubov, Mykhaylo

AU - Martínez, Amós

AU - Floreani, Filip

AU - Khrushchev, Igor

AU - Webb, David J.

AU - Bennion, Ian

PY - 2005/1/20

Y1 - 2005/1/20

N2 - A long period grating (LPG) written in a standard optical fibre was modified by using a femtosecond laser to induce an asymmetric change in the cladding's refractive index. This device produced blue and red wavelength shifts depending on the orientation of applied curvature, with maximum sensitivities of -1.6 nm m and +3.8 nm m, suggesting that this type of LPG may be useful as a shape sensor.

AB - A long period grating (LPG) written in a standard optical fibre was modified by using a femtosecond laser to induce an asymmetric change in the cladding's refractive index. This device produced blue and red wavelength shifts depending on the orientation of applied curvature, with maximum sensitivities of -1.6 nm m and +3.8 nm m, suggesting that this type of LPG may be useful as a shape sensor.

KW - cladding

KW - finite element method

KW - light sources

KW - optical fibers

KW - photosensitivity

KW - refractive index

KW - spectrum analyzers

KW - standards

KW - waveguides

KW - concave bending

KW - curvature sensors

KW - long period grating

KW - transmission spectrum

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DO - 10.1049/el:20056996

M3 - Article

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VL - 41

SP - 59

EP - 60

JO - Electronics letters

JF - Electronics letters

IS - 2

ER -

Long period grating directional bend sensor based on asymmetric index modification of cladding

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Keywords

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