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Proceedings Paper

Optical fiber null coupler sensor for damage detection using ultrasonic
Author(s): HaiFeng Xuan; Yanbiao Liao; Ming Zhang; Shu Rong Lai
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Paper Abstract

A novel optical fiber null coupler (OFNC) sensor based on acousto-optic interaction is developed, which can be used in the structure health monitoring of the medical materials. The OFNC sensors can be response to 10MHz supersonic wave, and their signal-to noise ratio are higher then Piezo Ceramic Transducers(PZT). A kind of Perspex with a 1mm hole is employed as the sample, where the OFNC sensor is glued on, and the reflected signal of ultrasonic wave by the hole is detected .

Paper Details

Date Published: 14 February 2005
PDF: 8 pages
Proc. SPIE 5634, Advanced Sensor Systems and Applications II, (14 February 2005); doi: 10.1117/12.573470
Show Author Affiliations
HaiFeng Xuan, Tsinghua Univ. (China)
Yanbiao Liao, Tsinghua Univ. (China)
Ming Zhang, Tsinghua Univ. (China)
Shu Rong Lai, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 5634:
Advanced Sensor Systems and Applications II
Yun-Jiang Rao; Osuk Y. Kwon; Gang-Ding Peng, Editor(s)

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