Novel Schiff base functionalized 80-?m tilted fiber Bragg grating chemosensor for copper(II) ion detection
Document Type
Article
Publication Date
7-1-2022
Abstract
A novel Schiff base functionalized tilted fiber Bragg grating (TFBG) is developed for the rapid detection of Copper ions in aqueous solutions. Notably, the proposed TFBG was inscribed in a commercial 80 mu m diameter singlemode fiber that has a stronger evanescent field and functionalized with Schiff base that has a strong affinity with copper(II) ions. The findings indicate that the 80-mu m TFBG is more superior to the TFBG inscribed in the 125-mu m diameter standard optical fiber in terms of higher sensitivity, a lower limit of detection, and less susceptibility to refractive index noise. Furthermore, the proposed sensor is a silica glass-based optical component that can be reused multiple times via chemical stripping followed by a functionalization process. The results show that there is no sign of alteration and degradation in its optical spectrum after 24 times of chemical stripping processes.
Keywords
Chemosensor, Cu(II) sensing, Schiff base, Tilted Fiber Bragg grating sensor, 80-?m diameter SMF
Divisions
photonics
Funders
Ministry of Education, Malaysia[ [Grant No:FRGS/1/2020/STG04/IMU/03/2]
Publication Title
Optical Fiber Technology
Volume
71
Publisher
Elsevier
Publisher Location
STE 800, 230 PARK AVE, NEW YORK, NY 10169 USA