Numerical analysis of resonant properties of a waveguide structure within a random medium.
We propose a simple structure for manipulating resonant conditions in random structures, which is composed of a waveguide structure as a defect region embedded in a random structure. Using the two-dimensional finite-difference time-domain method, we examine the resonant properties of localized modes bound in the waveguide. From the results, we confirm that long-lived modes are strongly confined in the waveguide only when the resonant frequency matches the frequency windows in the transmitted intensity spectrum of the surrounding random structure.
Fujiwara
Hideki
H
Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan. fuji@es.hokudai.ac.jp
Hamabata
Yosuke
Y
Sasaki
Keiji
K