Coupling reducing -points for photonic crystal fiber calculations
| Autor: | Anders Bjarklev, Jesper Riishede, Kristian G. Hougaard, Maja Albertsen, Stig E. Barkou Libori, Jesper Lægsgaard |
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| Rok vydání: | 2003 |
| Předmět: |
Coupling
Physics business.industry Plane wave Physics::Optics Microstructured optical fiber Condensed Matter Physics Yablonovite Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Computational physics Optics Hardware and Architecture Supercell (crystal) Electrical and Electronic Engineering business Photonic crystal Photonic-crystal fiber Bloch wave |
| Zdroj: | Photonics and Nanostructures - Fundamentals and Applications. 1:43-53 |
| ISSN: | 1569-4410 |
| DOI: | 10.1016/s1569-4410(03)00006-3 |
| Popis: | When describing localized electromagnetic modes in dielectric waveguides by the planewave method, a supercell geometry must necessarily be adopted. We demonstrate in the present work that the convergence of the calculations with respect to supercell size depends strongly on the choice of the transverse Bloch wave vector, k . We describe a method to derive k -points that minimize the coupling between repeated images of the guided modes in real space. Calculations have been done for a quadratic and a triangular photonic crystal fiber structure. With the new coupling reducing (CR) k -points, the convergence of the eigenfrequencies for both the fundamental and second order modes with respect to supercell size is considerably improved. The general approach outlined may also be applied in the case of three-dimensional photonic crystal structures. |
| Databáze: | OpenAIRE |
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