Design of fiber Bragg grating-based Fabry-Perot sensor for simultaneous measurement of humidity and temperature

被引：26

作者：

Yulianti, Ian ^{[1
]}

Supa'at, Abu Sahmah M. ^{[1
]}

Idrus, Sevia M. ^{[1
]}

Anwar, M. Ridwanto S. ^{[1
]}

机构：

[1] Univ Teknol Malaysia, Fac Elect Engn, Lightwave Commun Res Grp, Johor Baharu 81310, Johor Darul Taz, Malaysia

来源：

OPTIK | 2013年 / 124卷 / 19期

关键词：

Fiber Bragg grating; Fabry-Perot; Humidity; Temperature; STRAIN;

D O I：

10.1016/j.ijleo.2012.11.043

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

new sensor for simultaneous measurement of humidity and temperature is proposed. The sensor consists of Fabry-Perot cavity formed by two identical uniform fiber Bragg gratings. To make the cavity serves as humidity sensor, moisture sensitive polymer, which is polyimide, is coated on the FBG and on the cavity with different thickness. When the sensor is exposed to the relative humidity change, the polyimide will expand and stretch the fiber and induces strain on the FBG and on the cavity. The induced strain alters the grating period, cavity length and effective refractive index of fiber. The simulation results show that the humidity sensitivity and thermal sensitivity are 1.92 pm/%RH and 8.87 pm/C, respectively, for polyimide coating thickness of 10 mu m on the FBG and 15 pm on the cavity. (C) 2013 Elsevier GmbH. All rights reserved.

引用

页码：3919 / 3923

页数：5

共 19 条

[1]

ALAVIE AT, 1995, P SOC PHOTO-OPT INS, V2444, P528, DOI 10.1117/12.207704

[2] Simultaneous Measurement of Humidity and Temperature by Combining a Reflective Intensity-Based Optical Fiber Sensor and a Fiber Bragg Grating [J].

Arregui, Francisco J. ;

Matias, Ignacio R. ;

Cooper, Kristie L. ;

Claus, Richard O. .

IEEE SENSORS JOURNAL, 2002, 2 (05) :482-487

[3]

Case J., 1999, STRENGTH MAT STRUCTU

[4] Quasi-distributed temperature sensor combining Fibre Bragg Gratings and temporal reflectometry technique interrogation [J].

Crunelle, C. ;

Caucheteur, C. ;

Wuilpart, M. ;

Megret, P. .

OPTICS AND LASERS IN ENGINEERING, 2009, 47 (3-4) :412-418

[5] Parametric study of a polymer-coated fibre-optic humidity sensor [J].

David, Nigel A. ;

Wild, Peter M. ;

Djilali, Ned .

MEASUREMENT SCIENCE AND TECHNOLOGY, 2012, 23 (03)

[6] Fiber Bragg grating cavity sensor for simultaneous measurement of strain and temperature [J].

Du, WC ;

Tao, XM ;

Tam, HY .

IEEE PHOTONICS TECHNOLOGY LETTERS, 1999, 11 (01) :105-107

[7] Temperature independent strain measurement with a fiber grating tapered cavity sensor [J].

Du, WC ;

Tao, XM ;

Tam, HY .

IEEE PHOTONICS TECHNOLOGY LETTERS, 1999, 11 (05) :596-598

[8] Fiber grating spectra [J].

Erdogan, T .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 1997, 15 (08) :1277-1294

[9]

*HD MICROSYSTEMS, 2001, PYR PROD INF

[10]

Hernandez G., 1988, Fabry-Perot interferometers

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