Temperature dependence of the stress response of fibre Bragg gratings

R. R J Maier; William N. MacPherson; James S. Barton; J. D C Jones; Scott McCulloch; Gary Burnell

doi:10.1088/0957-0233/15/8/030

Temperature dependence of the stress response of fibre Bragg gratings

R. R J Maier, William N. MacPherson, James S. Barton, J. D C Jones, Scott McCulloch, Gary Burnell

School of Engineering & Physical Sciences

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

59 Citations (Scopus)

Abstract

Fibre Bragg gratings, used as stress sensing elements, show a temperature dependence of their stress response, which is mainly characterized by Young's modulus of the fibre material. The temperature dependence of the stress response of a fibre Bragg grating over a range from - 38 °C to + 110 °C has been measured. The stress sensitivity decreases linearly by 1.22 × 10^-4 K^-1 over this range which is nearly identical to the increase of Young's modulus of fused silica over this range implying that it is predominantly Young's modulus which defines and characterizes this thermal dependence. Significantly, bare and re-coated fibres show a markedly different behaviour below 0 °C due to the glass transition temperature of the jacket material. © 2004 IOP Publishing Ltd.

Original language	English
Pages (from-to)	1601-1606
Number of pages	6
Journal	Measurement Science and Technology
Volume	15
Issue number	8
DOIs	https://doi.org/10.1088/0957-0233/15/8/030
Publication status	Published - Aug 2004

Keywords

Optical fibre
Stress coefficient
Temperature dependence
Young's modulus

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10.1088/0957-0233/15/8/030

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abstract = "Fibre Bragg gratings, used as stress sensing elements, show a temperature dependence of their stress response, which is mainly characterized by Young's modulus of the fibre material. The temperature dependence of the stress response of a fibre Bragg grating over a range from - 38 °C to + 110 °C has been measured. The stress sensitivity decreases linearly by 1.22 × 10-4 K-1 over this range which is nearly identical to the increase of Young's modulus of fused silica over this range implying that it is predominantly Young's modulus which defines and characterizes this thermal dependence. Significantly, bare and re-coated fibres show a markedly different behaviour below 0 °C due to the glass transition temperature of the jacket material. {\textcopyright} 2004 IOP Publishing Ltd.",

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AU - Maier, R. R J

AU - MacPherson, William N.

AU - Barton, James S.

AU - Jones, J. D C

AU - McCulloch, Scott

AU - Burnell, Gary

PY - 2004/8

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AB - Fibre Bragg gratings, used as stress sensing elements, show a temperature dependence of their stress response, which is mainly characterized by Young's modulus of the fibre material. The temperature dependence of the stress response of a fibre Bragg grating over a range from - 38 °C to + 110 °C has been measured. The stress sensitivity decreases linearly by 1.22 × 10-4 K-1 over this range which is nearly identical to the increase of Young's modulus of fused silica over this range implying that it is predominantly Young's modulus which defines and characterizes this thermal dependence. Significantly, bare and re-coated fibres show a markedly different behaviour below 0 °C due to the glass transition temperature of the jacket material. © 2004 IOP Publishing Ltd.

KW - Optical fibre

KW - Stress coefficient

KW - Temperature dependence

KW - Young's modulus

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DO - 10.1088/0957-0233/15/8/030

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Temperature dependence of the stress response of fibre Bragg gratings

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Keywords

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