A novel surrounding refractive index sensor based on the polarization characteristics of thin-cladding long-period fiber grating
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- 作者：Yukun Baia ; b ; tjutbai_1@163.com" class="auth_mail" title="E-mail the corresponding author ; Yue Zhanga ; Xiurong Maa
- 关键词：Polarization ; Thin-cladding ; LPFG ; SRI ; Sensor
- 刊名：Optics Communications
- 出版年：2015
- 出版时间：15 November 2015
- 年：2015
- 卷：355
- 期：Complete
- 页码：607-611
- 全文大小：1572 K
文摘
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This paper proposes a method based on the photoinduced birefringence of thin-cladding long-period fiber grating for surrounding refractive index measurement.
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The core mode and cladding modes for optical fibers of various cladding radii are analyzed with the three-layer fiber model.
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The sensing principle is analyzed using the full-vector coupled mode equations and the Stokes parameters, and the effects of LPFG and incident light parameters on the sensing properties are investigated.
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The method needs a tunable laser source for the measurement of output light polarization states.