Regensburg 2004 – wissenschaftliches Programm
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HL: Halbleiterphysik
HL 15: Photonische Kristalle III
HL 15.3: Vortrag
Dienstag, 9. März 2004, 10:45–11:00, H17
Tunable Photonic Crystal circuits: Novel concepts and designs — •Matthias Schillinger1, Sergei Mingaleev1,2, Daniel Hermann1, and Kurt Busch1,3 — 1Institut für Theorie der Kondensierten Materie — 2Bogolyubov Institute for Theoretical Physics, Kiev, Ukraine — 3School of Optics/CREOL and University of Central Florida, Department of Physics, Orlando, USA
Over the past years, substantial research efforts have been directed at investigations of Photonic Crystals (PCs) with embedded defects such as microcavities and waveguides. These structures hold tremendous potential for the creation of very compact all-optical photonic integrated circuits which are required for the next generation of high-throughput optical communications systems.
In this talk, we suggest that tunable PC circuits can be created by infiltrating individual pores of bulk 2D PCs such as macroporous silicon, with liquid crystals or polymers. We show that a row of infiltrated pores can be used as a single-mode PC waveguide, and demonstrate very efficient broad-band transmission through sharp waveguide bends. For infiltration with liquid crystals, we illustrate different types of tunability of PC circuits. Such functional elements can be designed accurately and efficiently through a Wannier function approach [1] in combination with the guided-mode scattering matrix approach [2].
[1] K. Busch et al., J. Phys.: Condens. Matter 15, R1233-R1256 (2003)
[2] S.F. Mingaleev and K. Busch, Opt. Lett. 28, 619-621 (2003)