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Experimental observation of evanescent modes at the interface to slow-light photonic crystal waveguides

Spasenović, Marko; White, Thomas P; Ha, Sangwoo; Sukhorukov, Andrey A; Kampfrath, Tobias; Kivshar, Yuri S; de Sterke, C Martijn; Krauss, Thomas F; Kuipers, L Kobus


We experimentally study the fields close to an interface between two photonic crystal waveguides that have different dispersion properties. After the transition from a waveguide in which the group velocity of light is v(g) ~ c/10 to a waveguide in which it is v(g) ~ c/100, we observe a gradual increase in the field intensity and the lateral spreading of the mode. We attribute this evolution to the existence of a weakly evanescent mode that exponentially decays away from the interface. We...[Show more]

CollectionsANU Research Publications
Date published: 2011-04-01
Type: Journal article
Source: Optics letters
DOI: 10.1364/OL.36.001170


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