Strain optical fiber sensor with modified sensitivity based on the vernier effect

被引：5
作者：
Jauregui-Vazquez, D. [1 ,2 ]
Korterik, J. P. [1 ]
Offerhaus, H. L. [1 ]
Rojas-Laguna, R. [2 ]
Alvarez-Chavez, J. A. [1 ,3 ]
机构：
[1] Univ Twente, Opt Sci Grp, Enschede, Netherlands
[2] Univ Guanajuato, Dept Ingn Elect, Div Ingn Campus Irapuato Salamanca, Salamanca, Gto, Mexico
[3] Univ Twente, Opt Sci Grp, Drienerlolaan 5, NL-7522 NB Enschede, Netherlands
来源：
INSTRUMENTATION SCIENCE & TECHNOLOGY | 2023年 / 51卷 / 04期
关键词：
Fabry-Perot interferometer; Michelson interferometer; strain fiber optic sensor; Vernier effect; INTERFEROMETER; HUMIDITY;
D O I：
10.1080/10739149.2022.2150005
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An optical fiber strain sensor with adjustable sensitivity is proposed and demonstrated. The strain sensing setup employs a fiber optic Michelson interferometer (sensing element) and an extrinsic Fabry-Perot interferometer, in which both structures excited the Vernier effect. By adjusting the cavity length of the extrinsic Fabry-Perot interferometer, it is possible to control the M-factor. The set-up offers both sensitivity enhancement and magnification mode, where the maximal sensitivity is 4.38 pm/mu epsilon (M-factor = 2.3). This design improves the sensor performance and its implementation is not intricate.
引用
收藏
页码：421 / 434
页数：14
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