Miniature fiber-optic sensor for simultaneous measurement of refractive index and temperature

被引：3
作者：
Su, Huaiyin [1 ]
Zhang, Yundong [1 ]
Ma, Kai [1 ]
Zhao, Yongpeng [1 ]
Zhu, Fuxing [1 ]
机构：
[1] Harbin Inst Technol, Inst Optoelect, Natl Key Lab Tunable Laser Technol, Harbin, Heilongjiang, Peoples R China
来源：
OPTICAL ENGINEERING | 2018年 / 57卷 / 10期
基金：
中国国家自然科学基金;
关键词：
fiber-optic sensor; single-mode fiber; temperature; refractive index; sensitivity matrix; MACH-ZEHNDER INTERFEROMETER; SINGLE-MODE FIBER; MULTIMODE-INTERFERENCE; SENSITIVITY; REFRACTOMETER; TAPERS; GRATINGS; STRAIN; ARC;
D O I：
10.1117/1.OE.57.10.106111
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A miniature fiber-optic sensor fabricated by fuse splicing a section of hollow silica tube between two sections of single-mode fiber is proposed and experimentally demonstrated for simultaneous measurement of the liquid refractive index (RI) and temperature. The sensitivities of RI and temperature are measured by linear fitting, respectively, and corresponding detecting resolutions are obtained by the sensitivity matrix. The different response sensitivities of two dips to RI and temperature manifest that the structure proposed can be used for simultaneous measurement. The experimental evidence indicates that the miniature fiber sensor with advantages of easy fabrication, ultracompactness, and robustness is insensitive to axial strain. (C) 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
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页数：6
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