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
收藏
页码：284 / 292
页数：9
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