Analysis of a low-finesse extrinsic Fabry-Perot interferometric optical fiber sensor

被引：0
|
作者：
Yang, Zhen [1 ,2 ]
Zhang, Min [2 ]
Liao, Yanbiao [2 ]
Tian, Qian [1 ]
Li, Qisheng [3 ]
Zhang, Yi [3 ]
Zhuang, Zhi [3 ]
机构：
[1] Tsinghua Univ, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Dept Elect Engn, Opt Fiber Sensor Lab, Beijing, Peoples R China
[3] CAEP, Inst Struct Mechan, Mianyang, Sichuan, Peoples R China
来源：
ADVANCED SENSOR SYSTEMS AND APPLICATIONS IV | 2010年 / 7853卷
基金：
中国国家自然科学基金;
关键词：
fringe visibility; extrinsic Fabry-Perot interferometer; optical fiber sensor;
D O I：
10.1117/12.870589
中图分类号：
TP7 [遥感技术];
学科分类号：
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要：
Theoretical and experimental aspects of the extrinsic Fabry-Perot(FP) interferometric(EFPI) optical fiber sensor are studied. For a low-finesse EFPI sensor, the change of cavity length will influence the visibility of the interference fringes reflected back into the fiber. In this paper, an analysis on the fringe visibility of EFPI sensors based on the power distribution is presented. The effect that the cavity length and the source bandwidth play in the fringe visibility of EFPI sensors interrogated with a broadband light source which makes the sensor immune to source fluctuations is explored. The analysis may provide useful guidance for sensor design.
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页数：6
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