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Optical fiber cadmium ion detection technology based on MoS2 modified SNMNS

  • Harbin Institute of Technology
  • Harbin University of Science and Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Cadmium, as a contaminant in drinking water, necessitates rapid and real-time detection due to its significant health implications. This study leverages the capabilities of optical fibers for swift and immediate detection, introducing a novel fiber optic technology for cadmium ion detection. The technology employs a MoS2-modified configuration consisting of single-mode fiber, no-core fiber, multimode fiber, no-core fiber, and single-mode fiber (SNMNS). The detection mechanism utilizes the evanescent field generated by the SNMNS structure, which interacts with MoS2 to adsorb cadmium ions(Cd2+), resulting in observable spectral changes. Fiber optic sensor performance was observed achieving a maximum sensitivity of 74.88 nm/μM and a limit of detection (LOD) of 0.77 nM. The proposed sensor's rapid and highly sensitive detection capabilities hold significant potential for the online monitoring of Cd(II) contamination in groundwater.

Original languageEnglish
Title of host publicationFourteenth National Conference on Photonics
EditorsYongkang Dong, Hongwei Li
PublisherSPIE
ISBN (Electronic)9781510699182
DOIs
StatePublished - 2 Dec 2025
Event14th National Conference on Photonics - Harbin, China
Duration: 15 Aug 202517 Aug 2025

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume13986
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference14th National Conference on Photonics
Country/TerritoryChina
CityHarbin
Period15/08/2517/08/25

Keywords

  • Fiber optic sensor
  • cadmium ion
  • water pollution

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