Proceedings of the 9th Annual ISC Graduate Research Symposium
ISC-GRS 2015
April 27, 2015, Rolla, Missouri
EXPERIMENTAL CHARACTERIZATION OF SUBWAVELENGTH QUASI-PERIODIC
METAL-DIELECTRIC STACKS
Zhigang Li, Lei Sun, Xiaodong Yang and Jie Gao
Department of Mechanical and Aerospace Engineering,
Missouri University of Science and Technology, Rolla, MO 65409, USA
ABSTRACT
The Thue-Morse (ThM) metal-dielectric stack, one type of the quasi-periodic multilayer stack, is theoretically and experimentally
investigated in the present work. It is found that the band structure of ThM multilayer stack is dramatically distinguished from the
periodic stack which consists of the same metal and dielectric subwavelength layers but with different lattice sequence. For the ThM
multilayer stack, two resonant modes are predicted in theory and experimentally proved in the transmission spectra. Larger influence
on the inverse reflection spectra due to different lattice sequence has been observed, compared with the periodic stack. Different
propagation modes and the corresponding electric field distributions are examined in the finite element method (FEM) simulation
spectra.
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