A SIMPLE INTRINSIC OPTICAL FIBER REFRACTOMETER

被引：36

作者：

ARCHENAULT, M ^{[1
]}

GAGNAIRE, H ^{[1
]}

GOURE, JP ^{[1
]}

JAFFREZICRENAULT, N ^{[1
]}

机构：

[1] ECOLE CENT LYON, PHYSICOCHIM INTERFACES LAB, CNRS, URA 404, F-69131 ECULLY, FRANCE

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1991年 / 5卷 / 1-4期

关键词：

D O I：

10.1016/0925-4005(91)80241-B

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A refractometer using low-cost components is described. A multimode optical fibre is illuminated by a collimated beam at a variable oblique incidence angle. The value of the refractive index of a liquid is deduced from the measurement of an angle and does not depend on fluctuations of the light intensity. The use of an optical fibre allows remote sensing to be performed. As predicted by a simple theoretical analysis based on geometrical optics, the accuracy of the refractometer is about 1 x 10(-4) in refractive index units. Owing to its good sensitivity, this set-up can be used as a chemical sensor.

引用

页码：173 / 179

页数：7

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