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Opt Lett. 2003 Oct 1;28(19):1781-3.

Calculated out-of-plane transmission loss for photonic-crystal slab waveguides.

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  • 1Department of Electrical Engineering-Electrophysics, University of Southern California, Powell Hall of Engineering, 3737 Watt Way, Los Angeles, California 90089-0271, USA.


A fully three-dimensional finite-difference time domain numerical model is presented for calculating the out-of-plane radiation loss in photonic-crystal slab waveguides. The propagation loss of a single-line defect waveguide in triangular-lattice photonic crystals is calculated for suspended-membrane, oxidized-lower-cladding, and deeply etched structures. The results show that low-loss waveguides are achievable for sufficiently suspended membranes and oxidized-lower-cladding structures.

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