Share Email Print
cover

Proceedings Paper • new

Ratiometric optical fiber carbon dioxide sensor based on CdSe/ZnS QDs and Polym-H7 doped in EC matrix
Author(s): Cheng-Shane Chu D.D.S.; Jih-Ching Lo
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

This study focuses a new ratiometric optical fiber carbon dioxide (CO2) sensor based on CdSe/ZnS QDs and pH sensitive dye Polym-H7, those were immobilized within the Ethyl cellulose (EC). These CO2 sensing materials were coated on the surface of the optical fiber end and a 375 nm LED light was employed as an excitation source, it is shown that the emission wavelength of fluorescence dyes have no spectral overlap, so the fluorescence intensity ratio of two dyes can be used to design a ratiometric optical fiber CO2 sensor. The experimental result reveals the sensitivity of ratiometric optical fiber carbon dioxide sensor as R0/R=1.84 and exhibits a uniquely linear response for CO2 concentrations in the range of 0-100%. The suggested new ratiometric sensing approach suppresses the effects of imitation fluctuations in the intensity of excitation source.

Paper Details

Date Published: 16 October 2019
PDF: 5 pages
Proc. SPIE 11205, Seventh International Conference on Optical and Photonic Engineering (icOPEN 2019), 112050Y (16 October 2019); doi: 10.1117/12.2543179
Show Author Affiliations
Cheng-Shane Chu D.D.S., Ming Chi Univ. of Technology (Taiwan)
Jih-Ching Lo, Ming Chi Univ. of Technology (Taiwan)


Published in SPIE Proceedings Vol. 11205:
Seventh International Conference on Optical and Photonic Engineering (icOPEN 2019)
Anand Asundi; Motoharu Fujigaki; Huimin Xie; Qican Zhang; Song Zhang; Jianguo Zhu; Qian Kemao, Editor(s)

© SPIE. Terms of Use
Back to Top