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Light propagation in a photonic-crystal-slab line-defect waveguide

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2 Author(s)
Tokushima, M. ; Fundamental Res. Labs., NEC Corp., Tsukuba, Japan ; Yamada, H.

The guided and leaky modes of a photonic-crystal-slab line-defect waveguide were investigated by means of the direct three-dimensional (3-D) finite-difference time-domain (FDTD) simulation. The simulation predicted quasi-guided modes with long lifetimes in the cladding-mode continuum, while quasi-3-D analyses using projected band diagrams revealed only the existence of guided modes outside that continuum. It is shown that the direct 3-D analysis is necessary to account for measured transmission data for the photonic-crystal-slab line-defect waveguide with a finite length

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Quantum Electronics, IEEE Journal of  (Volume:38 ,  Issue: 7 )