Creating large-bandwidth line defects by embedding dielectric waveguides into photonic crystal slabs

Wah Tung Lau; Shanhui Fan

doi:10.1117/12.479475

9 July 2003 Creating large-bandwidth line defects by embedding dielectric waveguides into photonic crystal slabs

Wah Tung Lau, Shanhui Fan

Proceedings Volume 5000, Photonic Crystal Materials and Devices; (2003) https://doi.org/10.1117/12.479475
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States

Abstract

We introduce a general design procedure of creating a linear defect in any photonic crystal slabs that functioned as a waveguide. This involves embedding a dielectric block waveguide into a photonic crysatl slab such that the group velocity dispersion relation is phase matched with the bandgap of the crystal. A specific scheme of integration is required to remove any edge states within the guiding bandwidth. Such methodology allows a systematic tuning of waveguide properties such that it can be non-dispersive, and possesses wide bandwidth that contains only a single mode band. As a support of our argument, we demonstrate a particualr waveguide design that is single mode with essentially no group velocity dispersion, and possesses a bandwidth of 13% of the center band frequency.

Citation Download Citation

Wah Tung Lau and Shanhui Fan "Creating large-bandwidth line defects by embedding dielectric waveguides into photonic crystal slabs", Proc. SPIE 5000, Photonic Crystal Materials and Devices, (9 July 2003); https://doi.org/10.1117/12.479475

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