Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 63: Photonics IV
Q 63.1: Vortrag
Freitag, 22. März 2013, 14:00–14:15, F 128
On-chip optical isolation based on non-reciprocal resonant delocalization effects — •Ramy El-ganainy1, Pradeep Kumar2, and Miguel Levy2 — 1Max Planck Institute for the Physics of Complex Systems, Nothnitzer street 38, 01187 Dresden, Germany — 2Department of Physics, Michigan Technological University, Houghton, Michigan 49931
Optical isolators are very essential components in most optical systems. These devices operate as optical diodes- allowing light to propagate only in one direction and block any reflected signal. We propose a novel optical isolator device design that is based on integrated optics waveguide technology. The proposed device consists a modulated optical Bloch lattice that exhibits a refractive index ramp and periodic coupling constants between next neighbor optical channels along the propagation direction. Non-reciprocal resonant delocalization effects are introduced in these structures by depositing magnetic cover layer on top of the waveguides. Our analytical and numerical results show that large bandwidth high isolation ratios of -45 dB can be achieved at the telecommunication wavelength