Abstract
An SOI-based liquid-crystal (LC)-infiltrated photonic-crystal channel
waveguide having rectangular air holes in a Silicon core is
proposed—and has an average group index of 43 over a bandwidth of
1.02 THz, with vanishing group velocity dispersion, as well as reduced
higher-order dispersion. The possible propagation losses due to coupling
inefficiency are also investigated for the proposed structure. It is found
that high transmission is obtained for a broad bandwidth from the output of
the heterogeneous waveguide finally designed, which consists of an
LC-infiltrated PhC slow waveguide surrounded by fast PhC regions on either
side. The LC-infiltrated W0.7 PhC waveguide that has been designed for slow
light propagation should be highly tolerant to fabrication
errors—and has enhanced sensitivity in comparison with
conventional PhC waveguides.
© 2010 IEEE
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