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Control of light transmission in laser-written phase-shifted Bragg grating couplers

Ha, Sangwoo; Ams, Martin; Marshall, Graham D.; Neshev, Dragomir N.; Sukhorukov, Andrey A.; Kivshar, Yuri S.; Withford, Michael J.

Description

We demonstrate the fabrication by direct laser writing and the operation of a directional coupler containing Bragg gratings in each waveguide. We achieve high-precision control over the longitudinal shift between the gratings, which feature first-order Bragg resonance at telecommunication wavelengths. We observe fundamental differences between light transmission characteristics in couplers with unshifted and shifted gratings in agreement with theoretical predictions.

CollectionsANU Research Publications
Date published: 2011-04-15
Type: Journal article
URI: http://hdl.handle.net/1885/101078
Source: Optics Letters
DOI: 10.1364/OL.36.001380

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