Creating large bandwidth line defects by embedding...

Details Creating large bandwidth line defects by embedding... Creating large bandwidth line defects by embedding...

2005-10-18

2005-10-18

Wells, Nikita (Department: 2881)

Optical waveguides

Planar optical waveguide

C385S125000, C385S123000

Reexamination Certificate

active

06957003

ABSTRACT:
We introduce a general designing procedure that allows us, for any given photonic crystal slab, to create an appropriate line defect structure that possesses single-mode bands with large bandwidth and low dispersion within the photonic band gap region below the light line. This procedure involves designing a high index dielectric waveguide that is phase matched with the gap of the photonic crystal slab, and embedding the dielectric waveguide as a line defect into a crystal in a specific configuration that is free of edge states within the guiding bandwidth. As an example, we show a single mode line defect waveguide with a bandwidth approaching 13% of the center-band frequency, and with a linear dispersion relation throughout most of the bandwidth.

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