Frankfurt 2006 – wissenschaftliches Programm
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Q: Quantenoptik und Photonik
Q 47: Photonische Kristalle III
Q 47.2: Vortrag
Mittwoch, 15. März 2006, 17:45–18:00, HV
Photonic Crystal Lens — •Pshenay-Severin Ekaterina1, Chii-Chang Chen2, Thomas Pertsch1, Markus Augustin1, Arkadi Chipouline1, and Andreas Tünnermann1,3 — 1ZIK Ultraoptics, Friedrich-Schiller-Universität Jena, Institute of Applied Physics, Max-Wien-Platz 1, D-07743, Jena, Germany — 2National Central University, Taiwan — 3Fraunhofer Institute for Applied Optics and Precision Engineering, Jena
One of the problems existing in the application of Photonic Crystals (PCs) is the coupling of light into Photonic Crystal Wave Guides (PCWG). We propose a method for Photonic Crystal waveguide coupling using a Photonic Crystal lens. The PC lens consists of a photonic crystal with gradually varying radii of the air holes. Similar to a normal lens, the PC lens focuses a parallel beam into a spot. However, the PC lens structure is much more compact and structurally compatible with PCWGs. We propose a method to optimize the parameters of a PC lens based on an effective refraction index approach. Based on optimized lens designs we demonstrate efficient coupling into a Photonic Crystal waveguide. The results are compared with existing taper couplers and a considerable shortening of the coupling device is demonstrated. Details of ongoing experimental realization based on low-index photonic crystals are discussed [1].
[1] R. Iliew, C. Etrich, U. Peschel, F. Lederer, M. Augustin, H.-J. Fuchs, D. Schelle, E.-B. Kley, S. Nolte, and A. Tünnermann, Appl. Phys. Lett. 85, 5854-5856 (2004).