Dr Lourdes Alwis L.Alwis@napier.ac.uk
Lecturer
A long-period grating (LPG)-based relative humidity (RH) sensor is developed, based on using a tailored layered polyimide coating on the grating region at the distal end of the fiber probe and allowing it to respond to humidity changes. The attenuation band of the coated LPG, on which the sensor is based, responds to the varying RH (in this case, over the region from 20% to 80% RH) through changes in the characteristic wavelength of the LPG. The experimental results confirm that the sensor created shows a linear response to the variation of RH levels. The sensitivity of the sensor is estimated to be 0.10 nm/%RH with negligible hysteresis (
Alwis, L., Sun, T., & Grattan, K. T. V. (2013). Analysis of Polyimide-Coated Optical Fiber Long-Period Grating-Based Relative Humidity Sensor. IEEE Sensors Journal, 13, 767-771. https://doi.org/10.1109/JSEN.2012.2227714
Journal Article Type | Article |
---|---|
Publication Date | 2013 |
Deposit Date | Apr 3, 2014 |
Print ISSN | 1530-437X |
Publisher | Institute of Electrical and Electronics Engineers |
Peer Reviewed | Peer Reviewed |
Volume | 13 |
Pages | 767-771 |
DOI | https://doi.org/10.1109/JSEN.2012.2227714 |
Keywords | Long-period grating (LPG); polyimide (PI); relative humidity (RH); |
Public URL | http://researchrepository.napier.ac.uk/id/eprint/6729 |
Publisher URL | http://dx.doi.org/10.1109/JSEN.2012.2227714 |
Optical Fibre Refractive Index Sensor in a Hybrid Fibre Grating Configuration
(2015)
Journal Article
Novel Technique for Meniscus Height Measurement of Liquids Using Optical Fibers
(2021)
Journal Article
About Edinburgh Napier Research Repository
Administrator e-mail: repository@napier.ac.uk
This application uses the following open-source libraries:
Apache License Version 2.0 (http://www.apache.org/licenses/)
Apache License Version 2.0 (http://www.apache.org/licenses/)
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Advanced Search