Tapered fiber coated with hydroxyethyl cellulose/polyvinylidene fluoride composite for relative humidity sensor

Lokman, A. and Arof, Hamzah and Harun, Sulaiman Wadi (2015) Tapered fiber coated with hydroxyethyl cellulose/polyvinylidene fluoride composite for relative humidity sensor. Sensors and Actuators A: Physical, 225. pp. 128-132. ISSN 0924-4247, DOI https://doi.org/10.1016/j.sna.2015.02.015.

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A new evanescent wave based sensor is proposed and demonstrated using a silica fiber interferometer coated with Hydroxyethyl Cellulose/Polyvinylidene Fluoride (HEC/PVDF) composite. The performance of the sensor is investigated for two different types of interferometer structure: inline Mach Zehnder Interferometer (MZI) with dumbell structure and non-adiabatic etched fiber. The measurement is based on interferometric technique where the transmission spectrum of the reflected light is investigated for changes in relative humidity. For instance, the resonant dip wavelength for MZI dumbbell shape increases from 1555.76 to 1556.34 nm as the RH increases from 10 to 80. While, for etched SMF the resonant dip wavelength increases from 1554.58 to 1554.85 nm as the RH increases from 10 to 80. Both sensors demonstrated a linear shift especially within a range from 20 to 45. It is found that the MZI-based sensor has a sensitivity of 0.0123 nm/ with a linearity of 99.88 and limit of detection of 0.44. On the other hand, the etched SMF structure also shows change in the resonant wavelength with the increase in RH. The tapered fiber based sensor has a sensitivity of 0.0074 nm/ with linearity of 98.85 and limit of detection of 0.65. The lower limit of detection for dumbbell structure shows that the system is more efficient than etched SMF structure. The proposed sensor has a high potential for RH measurement as it has easy to fabricate, low fabrication cost, and compact size. (C) 2015 Elsevier B.V. All rights reserved.

Item Type: Article
Additional Information: ISI Document Delivery No.: CF6KR Times Cited: 0 Cited Reference Count: 14 Cited References: Bariain C, 2000, SENSOR ACTUAT B-CHEM, V69, P127, DOI 10.1016/S0925-4005(00)00524-4 Corres J.M., 2008, OPTICAL FIBRE HUMIDI, P153 Corres JM, 2007, SENSOR ACTUAT B-CHEM, V122, P442, DOI 10.1016/j.snb.2006.06.008 Corres J.M., 2006, PHOTON TECHNOL LETT, V18, P935 Harun S., 2013, TAPERED PLASTIC CONT Khijwania SK, 2005, SENSOR ACTUAT B-CHEM, V104, P217, DOI 10.1016/j.snb.2004.05.012 Li HN, 2004, ENG STRUCT, V26, P1647, DOI 10.1016/j.engstruct.2004.05.018 Mathew J, 2010, ELECTRON LETT, V46, P1341, DOI 10.1049/el.2010.2080 Muto S, 2003, MEAS SCI TECHNOL, V14, P746, DOI 10.1088/0957-0233/14/6/306 Sun AH, 2009, SENSOR ACTUAT B-CHEM, V142, P197, DOI 10.1016/j.snb.2009.08.028 Wu Q, 2011, OPT EXPRESS, V19, P7937, DOI 10.1364/OE.19.007937 Yeo TL, 2008, SENSOR ACTUAT A-PHYS, V144, P280, DOI 10.1016/j.sna.2008.01.017 Zheng Y., 2013, ADV MAT SCI ENG, V2013 ZHOU Q, 1988, ANAL CHEM, V60, P2317, DOI 10.1021/ac00171a035 Lokman, A. Arof, H. Harun, S. W. Engineering, Faculty /I-7935-2015 Engineering, Faculty /0000-0002-4848-7052 0 ELSEVIER SCIENCE SA LAUSANNE SENSOR ACTUAT A-PHYS
Uncontrolled Keywords: Hydroxyethyl cellulose/polyvinylidene, fluoride, fiber sensor, inline mzi, tapered fiber, humidity sensor, sensitivity,
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 18 Apr 2016 00:50
Last Modified: 02 Jan 2019 03:05
URI: http://eprints.um.edu.my/id/eprint/15773

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