Application of MZI Symmetrical Structure With Fiber Balls and Seven-Core Fiber in Microdisplacement Measurement

被引:12
|
作者
Zhao, Liming [1 ]
Li, Hong [1 ,3 ]
Song, Yanming [1 ]
Dong, Mingli [2 ]
Zhu, Lianqing [1 ,3 ]
机构
[1] Beijing Informat Sci & Technol Univ, Beijing Lab Opt Fiber Sensing & Syst, Beijing 100016, Peoples R China
[2] Beijing Informat Sci & Technol Univ, Beijing Key Lab Optoelect Measurement Technol, Beijing 100192, Peoples R China
[3] Beijing Informat Sci & Technol Univ, Ctr 111, Overseas Expertise Intro Ctr Discipline Innovat, Beijing 100192, Peoples R China
关键词
Microdisplacement; Mach-Zehnder interferometer; fiber ball; symmetrical structure; seven-core fiber; DISPLACEMENT SENSOR; INTERFEROMETER;
D O I
10.1007/s13320-018-0518-5
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
An optical fiber microdisplacement sensor based on symmetric Mach-Zehnder interferometer (MZI) with a seven-core fiber and two single-mode fiber balls is proposed. The rationality and manufacturing process of the MZI sensing structure are analyzed. The fabrication mechanism of the Mach-Zehnder sensor by CO2 laser is described in detail. Experimental results show that temperature sensitivities of the two dips are 98.65 pm/degrees C and 89.72 pm/degrees C, respectively. The microdisplacement sensitivities are 2017.71 pm/mm and 2457.92 pm/mm, respectively. The simultaneous measurement of temperature and microdisplacement is demonstrated based on the sensitive matrix. The proposed Mach-Zehnder interference sensor exhibits the advantages of compact structure, simple manufacturing process, and high reliability.
引用
收藏
页码:97 / 107
页数:11
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