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Higher order mode conversion via focused ion beam milled Bragg gratings in Silicon-on-Insulator waveguides

Ta'eed, Vahid G; Moss, D J; Eggleton, Benjamin J; Freeman, Darren; Madden, Steve; Samoc, Marek; Luther-Davies, Barry; Janz, S; Xu, D-X


We report the first Bragg gratings fabricated by Focused Ion Beam milling in optical waveguides. We observe striking features in the optical transmission spectra of surface relief gratings in silicon-on-insulator waveguides and achieve good agreement with theoretical results obtained using a novel adaptation of the beam propagation method and coupled mode theory. We demonstrate that leaky Higher Order Modes (HOM), often present in large numbers (although normally not observed) even...[Show more]

CollectionsANU Research Publications
Date published: 2004-10-18
Type: Journal article
Source: Optics Express
DOI: 10.1364/OPEX.12.005274


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