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Side-polished optical fiber sensor coated with a metal/oxide surface-plasmon-resonance sensing film

KUN-YI LEE1, KUEN-CHERNG LIN1,* , WOO-HU TSAI2

Affiliation

  1. Department of Electrical Engineering, China University of Science and Technology, Taipei 115, Taiwan, ROC
  2. Graduate Institute of Electro-Optical Engineering, Tatung University, Taipei 104, Taiwan, ROC

Abstract

We propose a side-polished fiber sensor coated with a metal/oxide surface-plasmon-resonance sensing film, in which an AZO layer is added between a metal film and the side-polished surface of the fiber core to improve the device’s detection performance. The metal/AZO bi-layer film is used as the active sensing member of the device. Such a device is then applied to the concentration measurement of CH3COONa solutions. The results indicate that the additional AZO layer in the active sensing member may give rise to lower detection limits and greater sensitivity..

Keywords

Surface plasmon resonance, Fiber sensor, Detection accuracy.

Citation

KUN-YI LEE, KUEN-CHERNG LIN, WOO-HU TSAI, Side-polished optical fiber sensor coated with a metal/oxide surface-plasmon-resonance sensing film, Optoelectronics and Advanced Materials - Rapid Communications, 9, 7-8, July-August 2015, pp.903-906 (2015).

Submitted at: May 14, 2014

Accepted at: June 24, 2015