Cascaded tilted fiber Bragg grating for enhanced refractive index sensing

被引：0

作者：

姜碧强 ^{[1
,2
]}

毕芷瑄 ^{[1
]}

王守恒 ^{[1
]}

席特立 ^{[1
]}

Kaiming Zhou ^{[2
]}

Lin Zhang ^{[2
]}

赵建林 ^{[1
]}

机构：

[1] MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions and Shaanxi Key Laboratory of Optical Information Technology,School of Science, Northwestern Polytechnical University

[2] Aston Institute of Photonic Technologies, Aston University

来源：

Chinese Physics B | 2018年 / 27卷 / 11期

基金：

欧盟地平线“2020”; 中国国家自然科学基金;

关键词：

tilted fiber Bragg grating; fiber optics sensors; refractive index measurement;

D O I：

暂无

中图分类号：

TP212 [发送器（变换器）、传感器];

学科分类号：

080202 ;

摘要：

We proposed and experimentally demonstrated a cascaded tilted fiber Bragg grating(TFBG) for enhanced refractive index sensing. The TFBG is UV-inscribed in series in ordinary single-mode fiber(SMF) and reduced-diameter SMF with the same tilt angle, and then excites two sets of superposed spectral combs of cladding modes. The cascaded TFBG with total length of 18 mm has a much wider wavelength range over 100 nm and narrower wavelength separation than that of a TFBG only in the SMF, enabling an enlarged range and a higher accuracy of refractive index measurement. The fabricated TFBG with the merits of enhanced sensing capability and temperature self-calibration presents great potentials in the biochemical sensing applications.

引用

页码：261 / 265

页数：5

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