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.
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页数：4
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