Control of directional evanescent coupling in fs laser written waveguides
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- 19 February 2007
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 15 (4) , 1579-1587
- https://doi.org/10.1364/oe.15.001579
Abstract
We investigate the evanescent coupling of femtosecond laser written waveguides with elliptical and circular shape. A directional tuning of the coupling properties is realized in a cubic array by tilting the elliptical waveguides. This allows to specifically pronounce diagonal coupling. In contrast, directional insensitive coupling is demonstrated in a circular waveguide array based on circular waveguides.Keywords
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