Continuous liquid level monitoring sensor system using fiber Bragg grating

被引：62

作者：

Sengupta, Dipankar ^{[1
]}

Kishore, Putha ^{[2
]}

机构：

[1] Univ Padua, Dept Informat Engn, I-35131 Padua, Italy

[2] Natl Inst Technol, Dept Phys, Warangal 506004, Andhra Pradesh, India

来源：

OPTICAL ENGINEERING | 2014年 / 53卷 / 01期

关键词：

hydrostatic pressure; chemical etching; liquid level; strain; fiber Bragg grating; edge filter; PRESSURE SENSOR; FILTER; FORCE;

D O I：

10.1117/1.OE.53.1.017102

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The design and packaging of simple, small, and low cost sensor heads, used for continuous liquid level measurement using uniformly thinned (etched) optical fiber Bragg grating (FBG) are proposed. The sensor system consists of only an FBG and a simple detection system. The sensitivity of sensor is found to be 23 pm/cm of water column pressure. A linear optical fiber edge filter is designed and developed for the conversion of Bragg wavelength shift to its equivalent intensity. The result shows that relative power measured by a photo detector is linearly proportional to the liquid level. The obtained sensitivity of the sensor is nearly -15 mV/cm. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：7

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