A Miniature Fiber-Optic Refractive-Index Sensor Based on Laser-Machined FabryPerot Interferometer Tip

被引：79
|
作者：
Ran, Zengling [1 ]
Rao, Yunjiang [1 ,2 ]
Zhang, Jian [1 ]
Liu, Zhiwei [1 ]
Xu, Bing [1 ]
机构：
[1] Univ Elect Sci & Technol China, Minist Educ, Key Lab Broadband Opt Fiber Transmiss & Commun Ne, Chengdu 610054, Peoples R China
[2] Chongqing Univ, Key Lab Optoelect Technol & Syst, Minist Educ, Chongqing 400044, Peoples R China
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2009年 / 27卷 / 23期
关键词：
Fabry-Perot interferometer; fiber optics; laser-machining; refractive-index measurement; DIGITAL PHASE DEMODULATION; PEROT-INTERFEROMETER; CLADDING-STRUCTURE; STRAIN SENSOR; TEMPERATURE; ETALON; SENSITIVITY; CAVITY;
D O I：
10.1109/JLT.2009.2031656
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel miniature fiber-optic Fabry-Perot (F-P) refractive-index (RI) sensor machined by 157 nm laser is proposed. The sensor head consists of a micro air F-P cavity near the tip of a single-mode fiber with a micro channel on the fiber tip used as both inlet and outlet for medium under test. Thin films are coated at reflective interfaces of the F-P cavity as mirrors to ensure high optical contrast, respectively. A RI resolution of 1130.887 nm/RI unit (RIU) is achieved by experiment. Such a sensor has a number of outstanding advantages when compared with other fiber-optic RI sensors, such as very small, rigid, high resolution, excellent linearity, wide measurement range, et al.
引用
收藏
页码：5426 / 5429
页数：4
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