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赵启大

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期刊论文

A smart bending sensor with a novel temperature-and strain-insensitive long-period grating

赵启大Shaohua Chena Zhengrong Tong b Qida Zhao a Zhiguo Liu a Xiaoyi Dong a

Sensors and Actuators A 116(2004)103-106,-0001,():

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摘要/描述

A simple bending sensor is performed with a novel insensitive long-period fiber grating (LPG). The characteristic of the insensitive LPG has been experimentally presented, which has the pitch and the notch wavelength of 440 μm and 1516.2nm at 20℃. We have investigated temperature and strain insensitivities. The temperature coefficient is about 0.003 nm/℃ from 10 to 50℃, and the strain coefficient is only about 15 nm/ε, which are about 1/30 and 1/100, compared with the corresponding coefficients of the conventional devices with typical values of 0.083 nm/℃ and 1521 nm/ε, respectively. It is fabricated as a bending sensor without any treatment to eliminate the temperature and strain effects, and the bending sensitivity is the same order as the ordinary one. At the same time, the temperature-and strain-insensitive LPG will have wide prospect for other smart fiber sensors and communication devices.

版权说明:以下全部内容由赵启大上传于   2005年01月17日 22时38分12秒,版权归本人所有。

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