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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

Abstract:

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

URL: https://scialert.net/abstract/?doi=jas.2008.2449.2455

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