Micrometric displacement sensor based on the strain of a fiber Bragg grating with heterodyne detection of intensity in a Mach-Zehnder interferometer

被引:0
|
作者
Gonzalez, H. [1 ,2 ]
Alvarez, F. J. [1 ,2 ]
Sandoval, G. E. [2 ]
机构
[1] Univ Nacl Autonoma Mexico, Programa Maestria & Doctorado Ingn, Ciudad Univ,Av Univ 3000, Ciudad De Mexico 04510, Mexico
[2] Univ Nacl Autonoma Mexico, Ctr Ciencias Aplicadas & Desarrollo Tecnol, Ciudad Univ,Apdo Postal 70-186, Ciudad De Mexico 04510, Mexico
关键词
D O I
10.1088/1742-6596/792/1/012030
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
This paper describes the implementation and characterization of a displacement sensor according to the strain of a fiber Bragg grating. The system is able to obtain measurements on micrometer scales through heterodyne detection of intensity in a Mach-Zehnder interferometry in fiber optic. For the displacement characterization, the fiber Bragg grating was attached from one end meanwhile at the other end a tension was induced by a high-precision rotation mount. Experimental results are presented for which varying the angular displacement we obtain a linear response in the amplitude of the intensity, determining a sensitivity of 0.77 pW/mu m with a displacement size of 48.80 mu m in a dynamic range from 0 mu m to 488 mu m.
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页数:6
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