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刘艳格

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期刊论文

Simultaneous force and temperature measurementusing long-period grating written on the jointof a microstructured optical fiber anda single mode fiber

刘艳格Jianbo Xu Yan-ge Liu* Zhi Wang and Boyin Tai

APPLIED OPTICS/Vol.49, No.3/20 January 2010,-0001,():

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摘要/描述

A novel approach to simultaneous force and temperature measurement is proposed and demonstrated inthis paper. The sensing element is based on a single long-period grating (LPG) formed by irradiating thejoint of a microstructured optical fiber (MOF) and standard single mode fiber (SMF) with CO2 laserpulses. The grating exhibits two groups of attenuation bands with distinctly different responses to temperatureand force: the resonant notches in the MOF involving couplings between fundamental mode andcore LP11 modes are almost temperature insensitive but highly sensitive to force, while resonant notchesin the SMF coming out of couplings between fundamental mode and cladding modes show high sensitivityto temperature but marginal sensitivity to force. Based on the LPG, a simple and efficient dualparametersensor simultaneously measuring temperature and force with a sensitivity of ∼0:086nm=℃and∼−2:18nm=N, respectively, is achieved. Furthermore, we propose a simple sensing configuration forsimultaneous strain and temperature measurement.

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【免责声明】以下全部内容由[刘艳格]上传于[2010年07月25日 09时59分31秒],版权归原创者所有。本文仅代表作者本人观点,与本网站无关。本网站对文中陈述、观点判断保持中立,不对所包含内容的准确性、可靠性或完整性提供任何明示或暗示的保证。请读者仅作参考,并请自行承担全部责任。

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