Abstract
Slow light in slotted photonic crystal waveguide (SPCW) has been theoretically
optimized with the post-fabrication technology of liquid infiltration. By
choosing the refractive indices that infiltrated in the first and second rows
of air holes adjacent to the slot, SPCW was optimized to possess wideband
slow light with high group index and low dispersion. Simulation results showed
that the slow light in SPCW for the same structure could be optimized with
nearly constant group indices of 50, 82.5, 150, and 176 over 6.9 nm, 3.1 nm,
1.65 nm, and 1.15 nm bandwidths. Then, it was demonstrated that this method
has the potential for realizing reconfigurable SPCW, in which the tunable
slow light could be obtained. Besides, the capability to control the slow
light properties after fabrication was interesting to compensate fabrication
imperfections, and it was particularly interesting to realize temperature-stable
SPCW devices. The preliminary results of this study have provided important
theoretical basis for the potential application offered by the SPCW in future
optical technologies.
© 2013 IEEE
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