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One-Dimensional Photonic Crystal Rib Waveguides

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2 Author(s)
Goeckeritz, J. ; Utah Univ., Salt Lake City ; Blair, S.

We analyze an optical waveguide that consists of a 1D photonic crystal (PC) embedded in a large cross-sectional rib waveguide. The PC provides control over the dispersion properties of the waveguide, while the rib geometry provides a low loss and versatile mechanism for confining light. The structure is analyzed using the 3D finite-difference time-domain method. The simulation results indicate that extremely low-loss waveguiding is possible over a defect band. Moreover, the PC has a complete 1D photonic band gap with a gap-midgap ratio (Deltaomega/omegamid) of 0.913, which is one of the largest ratios ever reported for a PC.

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Lightwave Technology, Journal of  (Volume:25 ,  Issue: 9 )