Optical VOC sensing applications of Al-doped ZnO coated optical fiber

A. R A Rashid, P. Susthitha Menon N V Visvanathan, S. Shaari

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Undoped and 1 at.% Al is prepared by sol gel method. Doped ZnO is coated on the optical fiber cores in order to sense various concentrations of methanol, ethanol, isopropanol and acetone vapour at room temperature. All the films have hexagonal wurtzite structure when analysed using the XRD spectra. The output power changes depending on the interaction between light propagation, coated fiber and the analyte. Output power ratio for 1 at.% Al-doped ZnO coated optical fiber reduces when the coated fiber is exposed to the tested vapour. Meanwhile for ethanol detection, the output power increases and has lower absorption than air. The time response of the vapour sensor is presented for undoped ZnO. Undoped ZnO has higher detection capability compared to Al-doped ZnO coated optical fiber due to the crystallite size.

Original languageEnglish
Pages (from-to)835-839
Number of pages5
JournalOptoelectronics and Advanced Materials, Rapid Communications
Volume7
Issue number11-12
Publication statusPublished - 2013

Fingerprint

Volatile organic compounds
Optical fibers
Vapors
Ethanol
Light propagation
2-Propanol
Fibers
Crystallite size
Acetone
Sol-gel process
Methanol
Sensors
Air
Temperature

Keywords

  • Al-doped ZnO
  • Coated fiber optic
  • VOC sensing

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Optical VOC sensing applications of Al-doped ZnO coated optical fiber. / Rashid, A. R A; N V Visvanathan, P. Susthitha Menon; Shaari, S.

In: Optoelectronics and Advanced Materials, Rapid Communications, Vol. 7, No. 11-12, 2013, p. 835-839.

Research output: Contribution to journalArticle

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