Discrimination between strain and temperature effects using first and second-order diffraction from a long-period grating
Discrimination between strain and temperature effects using first and second-order diffraction from a long-period grating
复制标题
使用长周期光栅的一阶和二阶衍射区分应变和温度效应
DOI：
10.1016/s0030-4018(02)01906-5
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发表时间：
2002
影响因子：
2.4
通讯作者：
I. Bennion
中科院分区：
文献类型：
--
作者：
T. Allsop;Lin Zhang;D. Webb;I. Bennion
We study the effects of temperature and strain on the spectra of the first and second-order diffraction attenuation bands of a single long-period grating (LPG) in step-index fibre. The primary and second-order attenuation bands had comparable strength with the second-order bands appearing in the visible and near-infra red parts of the spectrum. Using first and second-order diffraction to the eighth cladding mode a sensitivity matrix was obtained with limiting accuracy given by cross-sensitivity of ∼1.19% of the measurement. The sensing scheme presented as a limiting temperature and strain resolution of ±0.7 ° C and ∼±25 με .
