Optical bend sensor based on measurement of resonance mode splitting of long-period fiber grating

被引：159

作者：

Liu, Y ^{[1
]}

Zhang, L ^{[1
]}

Williams, JAR ^{[1
]}

Bennion, I ^{[1
]}

机构：

[1] Aston Univ, Photon Res Grp, Birmingham B4 7ET, W Midlands, England

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2000年 / 12卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

fiber mode coupling; long-period fiber grating; optical bend sensor; optical sensing; resonance mode splitting;

D O I：

10.1109/68.841276

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：

We report an effective new method of realizing optical bend sensing based on the measurement of bending-curvature encoded resonance mode splitting of long-period fiber grating. The bending induced mode splitting exhibits a near-linear response and the bending sensitivity achieved by this method is nearly four times higher than the previously reported wavelength shift detection method. The evolution of the transmission loss under bending appears dependent on the initial mode coupling strength.

引用

页码：531 / 533

页数：3

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