Abstract

A non-adiabatic tapered fiber sensor coated with humidity-sensitive graphene oxide (GO)/Poly (vinyl) alcohol (PVA) nanocomposite film for humidity sensing application was proposed. GO/PVA film was deposited onto the tapered region by dip-coating technique. The surface morphology of the coating film was characterized through Field Emission Scanning Electron Microscope (FESEM). When exposed to percent relative humidity (RH) ranging from 20 to 99.9 % RH, the sensor exhibited sensitivity for both untapered and tapered fibers at −0.00132 ± 0.00043 a. u (%)−1 and 0.00106 ± 0.00008 a. u (%)−1, respectively. The contribution of GO/PVA composite film in enhancing sensor sensitivity was proven, which was 0.00624 ± 0.00033 a. u (%)−1 with percentage of sensitivity boosting up to 15.86 % when compare to the uncoated ones.

Details

Title
Nonadiabatic Tapered Optical Fiber with GO/PVA Nanostructured Sensitive Coating for Humidity Sensing Application
Author
Syuhada, Aneez 1 ; Daud, S 1 ; Aziz, MS 1 

 Laser Center, Ibnu-Sina Institute for Scientific and Industrial Research (ISI-SIR), Universiti Teknologi Malaysia 
Publication year
2020
Publication date
Apr 2020
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2569673900
Copyright
© 2020. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.