A single-mode fiber sensor based on core-offset inter-modal interferometer

被引：40
|
作者：
Fan, Jingli [1 ]
Zhang, Jiangshan [2 ]
Lu, Ping [1 ]
Tian, Ming [1 ]
Xu, Jun [1 ]
Liu, Deming [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Natl Engn Lab Next Generat Internet Access Syst, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Dept Elect & Informat Engn, Wuhan 430074, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2014年 / 320卷
关键词：
Core-offset; Inter-modal interferometer; Optical fiber sensor; REFRACTIVE-INDEX SENSOR; ABRUPT TAPER; TEMPERATURE;
D O I：
10.1016/j.optcom.2013.12.055
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A single-mode fiber (SMF) sensor based on core-offset inter-modal interferometer is demonstrated. Compared with the sensing head with the two core-offset joints, the improved sensor has a special advantage that the offset direction cannot significantly affect the extinction ratio (ER) of the transmission spectrum. So the improved sensor, which is made of SMF and a very short section of multimode fiber (MMF), appears repeatable and higher extinction ratio. And the refractive index (RI) sensitivity of -64.889 nm/RIU and temperature sensitivity of 73 pm/degrees C, respectively can be achieved. Its ease of fabrication makes it a low cost alternative to existing sensing applications. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：33 / 37
页数：5
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