Title :
Numerical Investigation of a Kretschmann-Type Surface Plasmon Resonance Waveguide Sensor
Author :
Shibayama, Jun ; Takeuchi, Taichi ; Goto, Naoki ; Yamauchi, Junji ; Nakano, Hisamatsu
Author_Institution :
Hosei University, Tokyo
Abstract :
A Kretschmann-type surface plasmon resonance waveguide sensor is analyzed using the wide-angle beam- propagation method (BPM) with the complex Pade approximant and the finite-difference time-domain (FDTD) methods based on the recursive convolution (RC) and piecewise linear RC (PLRC) techniques. The wavelength responses of the sensor are calculated, and a detailed comparison of the numerical results is made. The BPM results are validated through a comparison with the FDTD results, in which the PLRC technique is required in terms of accuracy. The waveguide sensor shows a maximum absorption wavelength shift from 0.609 to 0.623 mum, as the refractive index of an analyte is increased from 1.330 to 1.334, which is comparable to the sensitivity of the conventional Kretschmann configuration.
Keywords :
finite difference time-domain analysis; light propagation; optical sensors; optical waveguides; piecewise linear techniques; surface plasmon resonance; Kretschmann-type surface plasmon resonance waveguide sensor; complex Pade approximant; finite-difference time-domain methods; piecewise linear recursive convolution techniques; refractive index; wide-angle beam-propagation method; Convolution; Finite difference methods; Optical sensors; Optical surface waves; Optical waveguides; Plasmons; Resonance; Sensor phenomena and characterization; Surface waves; Time domain analysis; Beam-propagation method (BPM); PadÉ approximant; finite-difference time-domain (FDTD) method; optical waveguide; piecewise linear recursive convolution (PLRC); surface plasmon resonance (SPR) sensor;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2007.903823
