Polyvinyl alcohol coated photonic crystal optical fiber sensor for humidity measurement

被引：143

作者：

Wong, Wei Chang ^{[1
]}

Chan, Chi Chiu ^{[1
]}

Chen, Li Han ^{[1
]}

Li, Tao ^{[2
]}

Lee, Kok Xian ^{[1
]}

Leong, Kam Chew ^{[3
]}

机构：

[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Div Bioengn, Singapore 637457, Singapore

[2] China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China

[3] Globatfoundries Singapore Pte Ltd, Singapore 738406, Singapore

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2012年 / 174卷

关键词：

Humidity; Optical fiber sensor; Interferometer; Photonic crystal fiber; Polyvinyl alcohol; Cladding mode excitation; Optical device; Polymer swelling; RELATIVE-HUMIDITY; BEND; FABRICATION;

D O I：

10.1016/j.snb.2012.07.032

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A polyvinyl alcohol (PVA) coated photonic crystal optical fiber (PCF) sensor has been proposed as a relative humidity (RH) sensor. It was fabricated by collapsing the holes of PCF at both ends to form a Michelson interferometer with cladding mode excitation. PVA was dip coated onto the sensor and the interference shift was measured when the sensor was exposed to varying RH. The sensor with 9% (w/w) coating showed a high sensitivity of 0.60 nm/%RH, displayed little hysteresis, high repeatability, low cross-sensitivity to temperature and ammonia gas and stability over 7 days of testing. A rise/fall time of 300/500 ms was achieved respectively. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：563 / 569

页数：7

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