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Proceedings Paper

Chitosan-diaphragm based optical-fiber hydrophone for in-vivo ultrasound measurements
Author(s): L. H. Chen; C. C. Chan; X. M. Ang; K. C. Leong
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Paper Abstract

The purpose of this work is the development of a high sensitivity and biocompatibility Fiber-Optic hydrophone for invivo ultrasound measurements. The selected sensing element- chitosan diaphragm allows matched-load condition due to its relatively permeable property. Chitosan is a natural polysaccharide which considered as biocompatible and biodegradable material that can be safe in performing the in-vivo measurement. The configuration of the sensor is based on the fiber-optic Fabry-Perot interferometry which offers good spatial resolution in the tens of MHz range [1] and robust response. Significant applications of the proposed sensor are in vivo micro-imaging [2], in-vivo lithotripsy measurement [3] or event the laboratory characterization of medical ultrasound sources. In this paper, the performance of the sensor is characterized by comparison with a PVDF needle hydrophone in term of sensitivity, frequency response and directivity.

Paper Details

Date Published: 9 November 2010
PDF: 4 pages
Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 78530M (9 November 2010); doi: 10.1117/12.870188
Show Author Affiliations
L. H. Chen, Nanyang Technological Univ. (Singapore)
C. C. Chan, Nanyang Technological Univ. (Singapore)
X. M. Ang, Nanyang Technological Univ. (Singapore)
K. C. Leong, Globalfoundries Singapore Pte. Ltd. (Singapore)

Published in SPIE Proceedings Vol. 7853:
Advanced Sensor Systems and Applications IV
Brian Culshaw; Yanbiao Liao; Anbo Wang; Xiaoyi Bao; Xudong Fan; Lin Zhang, Editor(s)

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