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Journal of Applied Sciences
  Year: 2008 | Volume: 8 | Issue: 13 | Page No.: 2449-2455
DOI: 10.3923/jas.2008.2449.2455
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Optimal Design of 90° Bend in Two Dimensional Photonic Crystal Waveguides

L. Dekkiche and R. Naoum


The aim of this contribution is to present the key factor that affect the transmission characteristics of the 90 ° bent photonic crystal waveguides. We propose a new type of two dimensional photonic crystal (2DPC) 90 ° bend waveguides. Within a single optimization step we already achieve very low power reflection coefficient over almost the entire frequency range of the Photonic Band Gap (PBG). A further analysis shows that there is a single critical rod in the optimized bend structure that exhibits an extraordinary high sensitivity at a given frequency. Using the Finite Difference Time Domain (FDTD) method and the absorbing boundary conditions proposed, we simulate its transmission characteristics and show an excellent transmission of light in 90 ° bend waveguides achieve 100% for several frequencies. This opens the door to novel topologies for compact switches and sensor applications.

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How to cite this article:

L. Dekkiche and R. Naoum, 2008. Optimal Design of 90° Bend in Two Dimensional Photonic Crystal Waveguides. Journal of Applied Sciences, 8: 2449-2455.

DOI: 10.3923/jas.2008.2449.2455






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