Berlin 2005 – wissenschaftliches Programm

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HL: Halbleiterphysik

HL 49: Photonische Kristalle II

HL 49.5: Vortrag

Dienstag, 8. März 2005, 11:45–12:00, TU P164

Electro - Optical Tuning of Photonic Crystal Structures — •Markus Schmidt¹, Manfred Eich¹, Uwe Hübner², and Hans-Georg Meyer² — ¹Technische Universität Hamburg-Harburg, Materials in Electrical Engineering and Optics, Eissendorfer Str. 38, D-21073 Hamburg — ²Institut fuer Physikalische Hochtechnologie Jena e.V., Abt. Kryoelektronik, A. Einstein Str.9, D-07745 Jena

Photonic crystals, characterized by a periodic dielectric function, are key elements in future integrated optics. In this respect, electro - optical switches and filters which allow to address different wavelength division multiplexing (WDM) channels are very attractive perspectives in nanophotonics. Therefore, we introduce a new concept which is based on two dimensional photonic crystal resonators with an optically nonlinear waveguide core. The core consists of a high electric field poled polymer, covalently functionalized with nonlinear dye molecules. A quasistatic electric field perpendicular to the slab waveguide axis induces a refractive index change resulting from the Pockels effect. Due to the fact that the spectral properties of the resonant structure of the resonators strongly depend on the refractive index, the transmission characteristic is changed. We realized a finite two dimensional photonic crystal line defect resonator consisting of P(MMA/DR-1) as core material. Shifting of the resonator peak and ac modulations have been observed experimentally. Thus, we demonstrate an electro - optical device made from a nonlinear optical photonic crystal.