Microfiber Bragg Grating for Liquid-Level Variation Sensing

被引：1

作者：

Lin, Bo ^{[1
]}

Tjin, Swee Chuan ^{[1
]}

Zhang, Yu ^{[2
]}

Dong, Bo ^{[3
]}

Hao, Jianzhong ^{[3
]}

机构：

[1] Nanyang Technol Univ, Photon Res Ctr, Sch Elect & Elect Engn, 50 Nanyang Ave, Singapore 639798, Singapore

[2] Huazhong Univ Sci & Technol, Wuhan 430074, Peoples R China

[3] Inst Infocomm Res, Singapore 138632, Singapore

来源：

21ST INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS | 2011年 / 7753卷

关键词：

fiber Bragg grating; microfiber; liquid-level sensor; SUBWAVELENGTH-DIAMETER SILICA;

D O I：

10.1117/12.884933

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report a liquid-level variation sensor based on a fiber Bragg grating (FBG) inscribed in a 6.5-mu m-diameter microfiber. The proposed microfiber Bragg grating (MFBG) in air has two separated reflection peaks, which are caused by the fundamental mode reflection and the higher-order mode reflection. Each of the two peaks will split into another two adjacent peaks when a fraction of the MFBG sensor immerses into liquid. By measuring the reflectivity difference between the two original peaks and their respective adjacent liquid-induced peaks, the liquid-level variation can be determined.

引用

页数：4

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