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D-type fiber optic sensor used as a refractometer based on total-internal reflection heterodyne interferometry

被引：30
作者：
Chiu, MH
Hsu, SN
Yang, H
机构：
[1] Natl Huwei Inst Technol, Dept Optoelect, Huwei 632, Yunlin, Taiwan
[2] Natl Chung Hsing Univ, Inst Precis Engn, Taichung 402, Taiwan
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2004年 / 101卷 / 03期
关键词：
fiber optic sensor; refractometer; heterodyne interferometry;
D O I：
10.1016/j.snb.2004.04.002
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A new type of fiber optic sensor (FOS) based on total-intemal reflection heterodyne interferometry (TIRHI) is proposed. It can be used as a liquid refractometer. The phase shift difference due to the TIR effects between the P- and S-polarizations is measured using heterodyne interferometry with a D-type fiber optic sensor. Substituting the phase shift difference into Fresnel's equations, the refractive index can be calculated. It has some merits, such as, high sensitivity and stability, small size and real-time measurement. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：322 / 327
页数：6
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