Temperature characterisation of long-period gratings for sensor applications

Fin O'Flaherty; Zabih Ghassemlooy; P. S. Mangat; K. Dowker

doi:10.1002/mop.20317

Temperature characterisation of long-period gratings for sensor applications

Fin O'Flaherty, Zabih Ghassemlooy, P. S. Mangat, K. Dowker

Mathematics, Physics and Electrical Engineering

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

14 Citations (Scopus)

Abstract

Long-period gratings, which display sensitivity to ambient temperature variations, are proposed as sensors. Therefore, full temperature characterisation is essential. In this paper, the effects of temperature upon the spectral profiles of two sets of long period gratings (LPGs) of different periods are investigated. The results obtained show that the shorter-period LPGs were found to be less sensitive than the longer-period LPGS over identical temperature ranges. The coupling wavelength shifts due to temperature are also seen to be linear and in opposite directions in each set of LPGs.

Original language	English
Pages (from-to)	402-405
Journal	Microwave and Optical Technology Letters
Volume	42
Issue number	5
DOIs	https://doi.org/10.1002/mop.20317
Publication status	Published - 2004

Keywords

long period gratings
sensors
temperature
concrete deterioration

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10.1002/mop.20317

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abstract = "Long-period gratings, which display sensitivity to ambient temperature variations, are proposed as sensors. Therefore, full temperature characterisation is essential. In this paper, the effects of temperature upon the spectral profiles of two sets of long period gratings (LPGs) of different periods are investigated. The results obtained show that the shorter-period LPGs were found to be less sensitive than the longer-period LPGS over identical temperature ranges. The coupling wavelength shifts due to temperature are also seen to be linear and in opposite directions in each set of LPGs.",

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AU - O'Flaherty, Fin

AU - Ghassemlooy, Zabih

AU - Mangat, P. S.

AU - Dowker, K.

PY - 2004

Y1 - 2004

N2 - Long-period gratings, which display sensitivity to ambient temperature variations, are proposed as sensors. Therefore, full temperature characterisation is essential. In this paper, the effects of temperature upon the spectral profiles of two sets of long period gratings (LPGs) of different periods are investigated. The results obtained show that the shorter-period LPGs were found to be less sensitive than the longer-period LPGS over identical temperature ranges. The coupling wavelength shifts due to temperature are also seen to be linear and in opposite directions in each set of LPGs.

AB - Long-period gratings, which display sensitivity to ambient temperature variations, are proposed as sensors. Therefore, full temperature characterisation is essential. In this paper, the effects of temperature upon the spectral profiles of two sets of long period gratings (LPGs) of different periods are investigated. The results obtained show that the shorter-period LPGs were found to be less sensitive than the longer-period LPGS over identical temperature ranges. The coupling wavelength shifts due to temperature are also seen to be linear and in opposite directions in each set of LPGs.

KW - long period gratings

KW - sensors

KW - temperature

KW - concrete deterioration

U2 - 10.1002/mop.20317

DO - 10.1002/mop.20317

M3 - Article

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SP - 402

EP - 405

JO - Microwave and Optical Technology Letters

JF - Microwave and Optical Technology Letters

IS - 5

ER -

Temperature characterisation of long-period gratings for sensor applications

Abstract

Keywords

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