Fiber optic sensing of liquid refractive index

被引：102

作者：

Banerjee, Argha ^{[3
]}

Mukherjee, Sayak ^{[3
]}

Verma, Rishi Kumar ^{[4
]}

Jana, Biman ^{[1
]}

Khan, Tapan Kumar ^{[1
]}

Chakroborty, Mrinmoy ^{[1
]}

Das, Rahul Kumar ^{[1
]}

Biswas, Sandip ^{[3
]}

Saxena, Ashutosh ^{[2
]}

Singh, Vandana ^{[3
]}

Hallen, Rakesh Mohan ^{[1
]}

Rajput, Ram Swarup ^{[3
]}

Tewari, Paramhans ^{[2
]}

Kumar, Satyendra ^{[3
]}

Saxena, Vishal ^{[2
]}

Ghosh, Anjan Kumar ^{[2
,4
]}

John, Joseph ^{[2
,4
]}

Gupta-Bhaya, Pinaki ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Kanpur 208016, Uttar Pradesh, India

[2] Indian Inst Technol, Dept Elect Engn, Kanpur 208016, Uttar Pradesh, India

[3] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

[4] Indian Inst Technol, Laser Technol Program, Kanpur 208016, Uttar Pradesh, India

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2007年 / 123卷 / 01期

关键词：

liquid refractive index sensor; fiber optic refractive index sensor; refractive index sensitivity of uncladded fiber; uncladded optical fiber as sensor;

D O I：

10.1016/j.snb.2006.09.063

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An optical fiber, partially stripped of its cladding is shown to sense refractive index of a liquid in which the uncladded sensing region is immersed, to a high degree of precision and over a wide range of refractive index. The slope of sensor response is found to be non linear, can have either sign and can change sign at around refractive index of the fiber. The sensitivity of the sensor to refractive index change is dependent on cladding thickness and is a maximum at an intermediate thickness value. It is insensitive to the presence of absorption at the wavelength at which refractive index is being measured and to the chemical nature of the solute. Experiments designed to show that cladding modes are responsible for sensing are described. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：594 / 605

页数：12

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