Experimental Study of Coupling Fiber-Optic Vibration Sensor Based on Variational Theory

Bin Ma; Hou Lei Gao

doi:10.4028/www.scientific.net/AMR.490-495.1181

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 490-495Experimental Study of Coupling Fiber-Optic...

Experimental Study of Coupling Fiber-Optic Vibration Sensor Based on Variational Theory

Abstract:

According to the character of fiber-optic coupler, its coupling output is sensitive to the variation of coupling region’s length. A new kind of coupling fiber-optic vibration sensor is presented base on this principle. The theory of coupling single-mode fiber-optic sensor is analyzed. A prototype of fiber optic vibration detection system has been successfully built, including a sensor head, a low-cost control unit and a software package for signal processing with high resolution. The response of fiber-optic sensor and piezoelectric sensor to periodic vibration and shock is measured and the results of the coupling fiber-optic vibration sensor are closely in accordance with high precision piezoelectric sensor. The cross-axis anti-disturbance ability of the fiber-optic sensor is discussed in addition. Experimental results indicate that the coupling fiber-optic vibration sensor has favorable vibration detection capability; it can meet the requirement of vibration measurement.

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Periodical:

Advanced Materials Research (Volumes 490-495)

Pages:

1181-1185

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.490-495.1181

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Online since:

March 2012

Authors:

Bin Ma, Hou Lei Gao

Keywords:

Coupling Ratio, Fused Biconical Taper, Optical Fiber Coupler, Variational Theory

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