Control of directional evanescent coupling in fs laser written waveguides | Zendy

Alexander Szameit | Zendy; Felix Dreisow | Zendy; Thomas Pertsch | Zendy; Stefan Nolte | Zendy; Andreas Tünnermann | Zendy

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Control of directional evanescent coupling in fs laser written waveguides

Author(s) -

Alexander Szameit,

Felix Dreisow,

Thomas Pertsch,

Stefan Nolte,

Andreas Tünnermann

Publication year - 2007

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.15.001579

Subject(s) - optics , coupling (piping) , femtosecond , waveguide , laser , diagonal , coupled mode theory , physics , materials science , refractive index , geometry , metallurgy , mathematics

We investigate the evanescent coupling of femtosecond laser written waveguides with elliptical and circular shape. A directional tuning 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.

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