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http://hdl.handle.net/10397/96441
Title: | PCF based modal interferometer for lead ion detection | Authors: | Noman, AA Dash, JN Cheng, X Tam, HY Yu, C |
Issue Date: | 14-Feb-2022 | Source: | Optics express, 14 Feb. 2022, v. 30, no. 4, p. 4895-4904 | Abstract: | A compact, reliable, and fast responsive PCF (photonic crystal fiber) based modal interferometric sensor for lead ion detection is proposed and experimentally demonstrated. The sensor has been fabricated by splicing a small section of PCF with SMF (single mode fiber) followed by collapsing the air holes of PCF at its tip. The interferometer is dip coated with chitosan-PVA (polyvinyl alcohol) and glutathione functionalized gold nanoparticles. Three probes have been fabricated, and the maximum sensitivity has been found to be 0.031 nm/ppb for lead ions whereas the detection range has been considered from 0 ppb to 50 ppb. The probe has been found to have a faster response time of ∼ 10 s. Furthermore, the sensor has been found to be less responsive towards other heavy metal ions, thereby demonstrating its selectivity towards lead ions. Besides, a section of FBG (fiber Bragg grating) has been embedded into the interferometer and the temperature response of FBG peak along with interference spectra has been investigated for better accuracy. | Publisher: | Optical Society of America | Journal: | Optics express | EISSN: | 1094-4087 | DOI: | 10.1364/OE.447272 | Rights: | © 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement (https://opg.optica.org/library/license_v2.cfm#VOR-OA). Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved. The following publication Al Noman, A., Dash, J. N., Cheng, X., Tam, H. Y., & Yu, C. (2022). PCF based modal interferometer for lead ion detection. Optics Express, 30(4), 4895-4904 is available at https://doi.org/10.1364/OE.447272. |
Appears in Collections: | Journal/Magazine Article |
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