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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 25,
  • Issue 9,
  • pp. 2435-2439
  • (2007)

One-Dimensional Photonic Crystal Rib Waveguides

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Abstract

We analyze an optical waveguide that consists of a 1-D 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 3-D 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 1-D photonic band gap with a gap–midgap ratio (Δ<i>ω</i>/<i>ω</i><sub>mid</sub>) of 0.913, which is one of the largest ratios ever reported for a PC.

© 2007 IEEE

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