Long-period fiber grating bending sensors in laminated composite structures

Weichong Du; Hwa Yaw Tam; Michael S Y Liu; Xiaoming Tao

doi:10.1117/12.316984

Long-period fiber grating bending sensors in laminated composite structures

Weichong Du, Hwa Yaw Tam, Michael S Y Liu, Xiaoming Tao

The Hong Kong Polytechnic University

Research output: Journal article publication › Conference article › Academic research › peer-review

53 Citations (Scopus)

Abstract

In this paper, we present the experimental result of the effect of bending an over-written long-period fiber grating (LPG) on the transmitted power spectrum and total transmitted power of a light-emitting diode (LED). It is found that the total transmitted power through the LPG decreases linearly with bend curvature within the range from 0 to about 0.001/mm. The error for determining the bend curvature due to the actual non-linearity of the sensor is estimated to be ± 2× 10-5/mm. Therefore, a simple power measurement scheme using an embedded LPG can be employed to measure the static bend curvature and dynamic process of structures.

Original language	English
Pages (from-to)	284-292
Number of pages	9
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3330
DOIs	https://doi.org/10.1117/12.316984
Publication status	Published - 1 Dec 1998
Event	Smart Structures and Materials 1998: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials - San Diego, CA, United States Duration: 2 Mar 1998 → 2 Mar 1998

ASJC Scopus subject areas

Applied Mathematics
Computer Science Applications
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1117/12.316984

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abstract = "In this paper, we present the experimental result of the effect of bending an over-written long-period fiber grating (LPG) on the transmitted power spectrum and total transmitted power of a light-emitting diode (LED). It is found that the total transmitted power through the LPG decreases linearly with bend curvature within the range from 0 to about 0.001/mm. The error for determining the bend curvature due to the actual non-linearity of the sensor is estimated to be ± 2× 10-5/mm. Therefore, a simple power measurement scheme using an embedded LPG can be employed to measure the static bend curvature and dynamic process of structures.",

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AU - Du, Weichong

AU - Tam, Hwa Yaw

AU - Liu, Michael S Y

AU - Tao, Xiaoming

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Y1 - 1998/12/1

N2 - In this paper, we present the experimental result of the effect of bending an over-written long-period fiber grating (LPG) on the transmitted power spectrum and total transmitted power of a light-emitting diode (LED). It is found that the total transmitted power through the LPG decreases linearly with bend curvature within the range from 0 to about 0.001/mm. The error for determining the bend curvature due to the actual non-linearity of the sensor is estimated to be ± 2× 10-5/mm. Therefore, a simple power measurement scheme using an embedded LPG can be employed to measure the static bend curvature and dynamic process of structures.

AB - In this paper, we present the experimental result of the effect of bending an over-written long-period fiber grating (LPG) on the transmitted power spectrum and total transmitted power of a light-emitting diode (LED). It is found that the total transmitted power through the LPG decreases linearly with bend curvature within the range from 0 to about 0.001/mm. The error for determining the bend curvature due to the actual non-linearity of the sensor is estimated to be ± 2× 10-5/mm. Therefore, a simple power measurement scheme using an embedded LPG can be employed to measure the static bend curvature and dynamic process of structures.

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M3 - Conference article

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EP - 292

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Smart Structures and Materials 1998: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials

Y2 - 2 March 1998 through 2 March 1998

ER -

Long-period fiber grating bending sensors in laminated composite structures

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