A fast response intrinsic humidity sensor based on an etched singlemode polymer fiber Bragg grating

Ginu Rajan; Yusof Mohd Noor; Bing Liu; Eliathamby Ambikairaja; David J. Webb; Gang-Ding Peng

doi:10.1016/j.sna.2013.08.036

A fast response intrinsic humidity sensor based on an etched singlemode polymer fiber Bragg grating

Ginu Rajan, Yusof Mohd Noor, Bing Liu, Eliathamby Ambikairaja, David J. Webb, Gang-Ding Peng

Research output: Contribution to journal › Article › peer-review

Abstract

A simple, low cost and fast response time intrinsic relative humidity sensor system based on an etched singlemode polymer fiber Bragg (POFBG) is presented in this paper. A macro-bend linear edge filter which converts the humidity induced wavelength shift into an intensity change is used as the interrogation technique. The singlemode POFBG is etched to micro-meters in diameter to improve the response time of the humidity sensor. A response time of 4.5 s is observed for a polymer FBG with a cladding diameter of 25 μm. The overall sensor system sensitivity was 0.23 mV/%RH. The etched POFBG humidity sensor shows anexponential decrease in response time with a decrease in fiber diameter. The developed sensor might have potential applications in a wide range of applications where fast and accurate real time humidity control is required.

Original language	English
Pages (from-to)	107-111
Number of pages	5
Journal	Sensors and Actuators A : physical
Volume	203
Early online date	3 Sep 2013
DOIs	https://doi.org/10.1016/j.sna.2013.08.036
Publication status	Published - Dec 2013

Keywords

polymer FBG sensor
humidity sensors
etched gratings

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10.1016/j.sna.2013.08.036

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title = "A fast response intrinsic humidity sensor based on an etched singlemode polymer fiber Bragg grating",

abstract = "A simple, low cost and fast response time intrinsic relative humidity sensor system based on an etched singlemode polymer fiber Bragg (POFBG) is presented in this paper. A macro-bend linear edge filter which converts the humidity induced wavelength shift into an intensity change is used as the interrogation technique. The singlemode POFBG is etched to micro-meters in diameter to improve the response time of the humidity sensor. A response time of 4.5 s is observed for a polymer FBG with a cladding diameter of 25 μm. The overall sensor system sensitivity was 0.23 mV/%RH. The etched POFBG humidity sensor shows anexponential decrease in response time with a decrease in fiber diameter. The developed sensor might have potential applications in a wide range of applications where fast and accurate real time humidity control is required.",

keywords = "polymer FBG sensor, humidity sensors, etched gratings",

author = "Ginu Rajan and Noor, {Yusof Mohd} and Bing Liu and Eliathamby Ambikairaja and Webb, {David J.} and Gang-Ding Peng",

year = "2013",

month = dec,

doi = "10.1016/j.sna.2013.08.036",

language = "English",

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T1 - A fast response intrinsic humidity sensor based on an etched singlemode polymer fiber Bragg grating

AU - Rajan, Ginu

AU - Noor, Yusof Mohd

AU - Liu, Bing

AU - Ambikairaja, Eliathamby

AU - Webb, David J.

AU - Peng, Gang-Ding

PY - 2013/12

Y1 - 2013/12

N2 - A simple, low cost and fast response time intrinsic relative humidity sensor system based on an etched singlemode polymer fiber Bragg (POFBG) is presented in this paper. A macro-bend linear edge filter which converts the humidity induced wavelength shift into an intensity change is used as the interrogation technique. The singlemode POFBG is etched to micro-meters in diameter to improve the response time of the humidity sensor. A response time of 4.5 s is observed for a polymer FBG with a cladding diameter of 25 μm. The overall sensor system sensitivity was 0.23 mV/%RH. The etched POFBG humidity sensor shows anexponential decrease in response time with a decrease in fiber diameter. The developed sensor might have potential applications in a wide range of applications where fast and accurate real time humidity control is required.

AB - A simple, low cost and fast response time intrinsic relative humidity sensor system based on an etched singlemode polymer fiber Bragg (POFBG) is presented in this paper. A macro-bend linear edge filter which converts the humidity induced wavelength shift into an intensity change is used as the interrogation technique. The singlemode POFBG is etched to micro-meters in diameter to improve the response time of the humidity sensor. A response time of 4.5 s is observed for a polymer FBG with a cladding diameter of 25 μm. The overall sensor system sensitivity was 0.23 mV/%RH. The etched POFBG humidity sensor shows anexponential decrease in response time with a decrease in fiber diameter. The developed sensor might have potential applications in a wide range of applications where fast and accurate real time humidity control is required.

KW - polymer FBG sensor

KW - humidity sensors

KW - etched gratings

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JO - Sensors and Actuators A : physical

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A fast response intrinsic humidity sensor based on an etched singlemode polymer fiber Bragg grating

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Keywords

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