Long-period fiber grating bending sensors in laminated composite structures

被引：45

作者：

Du, WC ^{[1
]}

Tam, HY ^{[1
]}

Liu, MSY ^{[1
]}

Tao, XM ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Inst Text & Clothing, Kowloon, Hong Kong

来源：

SMART STRUCTURES AND MATERIALS 1998: SENSORY PHENOMENA AND MEASUREMENT INSTRUMENTATION FOR SMART STRUCTURES AND MATERIALS | 1998年 / 3330卷

关键词：

D O I：

10.1117/12.316984

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we present the experimental results 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 +/- 2x 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.

引用

页码：284 / 292

页数：9