A long-range fiber optic pH sensor prepared by dye doped sol-gel immobilization technique

被引：71

作者：

Gupta, BD ^{[1
]}

Sharma, S ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, New Delhi 110016, India

来源：

OPTICS COMMUNICATIONS | 1998年 / 154卷 / 5-6期

关键词：

optical fiber; sensor; evanescent wave; absorption; pH; sol-gel process;

D O I：

10.1016/S0030-4018(98)00321-6

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A long-range fiber optic pH sensor based on evanescent wave absorption is presented. The probe is prepared by immobilizing a mixture of three pH-sensitive dyes (cresol red, bromophenol blue and chlorophenol red) on the surface of the fiber core using sol-gel technology. The sensor has a linear and reproducible pH response in the pH range from 4.5 to 13.0. Due to its long dynamic pH range the sensor is expected to find wide applications. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：282 / 284

页数：3

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