High performance chitosan diaphragm-based fiber-optic acoustic sensor

被引：92

作者：

Chen, L. H. ^{[1
]}

Chan, C. C. ^{[1
]}

Yuan, W. ^{[1
]}

Goh, S. K. ^{[1
]}

Sun, J. ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Div Bioengn, Singapore 63754, Singapore

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2010年 / 163卷 / 01期

关键词：

Fabry-Perot sensor; Acoustic measurements; Fiber-optic sensor; Chitosan diaphragm; PRESSURE;

D O I：

10.1016/j.sna.2010.06.023

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A miniature fiber-optic Fabry-Perot is fabricated directly on the tip of a single mode fiber. The active sensing element is a thin linear polysaccharide (chitosan) diaphragm with thickness of only 1.5 mu m. The chitosan diaphragm exhibits excellent physicochemical properties that include membrane-forming ability, good adhesion, insensitive to background pressure and high mechanical strength. Together with fiber-optic Fabry-Perot interferometric's inherent advantages, the chitosan diaphragm-based Fabry-Perot sensor becomes a wonderful candidate for dynamic pressure measurement such as acoustic pressure. A chitosan diaphragm-based miniature Fabry-Perot system for acoustic pressure measurement is presented which exhibits high sensitivity of 0.002 V/mPa at 1 kHz with frequency response from range 20 Hz to 20 kHz. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：42 / 47

页数：6

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