Abstract
ABSTRACT A novel surface plasmon resonance (SPR) sensor based on the multihole optical fiber with TiO 2 layer is proposed and numerically characterized. The finite element method(FEM) is used to analyze the characteristics of the SPR sensor. The effects of the pitch between air holes, the thicknesses of the gold film and titanium dioxide layer on the sensor characteristics are investigated, and the sensitivity of proposed sensor is also given. The results indicate that when the thickness of gold film increases, the resonance wavelength shif ts to longer wavelength, and the resonance peak broadens. The spectral tuning of the plasmon resonance can be more efficiently realized by changing the TiO 2 layer thickness. The maximal refractive-index resolution of the proposed sensor for aqueous analytes is 5×10 -5 . 1. INTRODUCTION Optical fiber surface plasmon resonance (S PR) sensors are the unique combination of optical fiber technology and SPR technology. In the past few decades, the optical fiber SPR sensor has been widely applied in biochemical detection, environmental and food testing, structural health monitoring
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
