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Control of directional evanescent coupling in fs laser written waveguides

 
: Szameit, A.; Dreisow, F.; Pertsch, T.; Nolte, S.; Tünnermann, A.

:
Postprint (512 KByte; PDF; )

Optics Express 15 (2007), Nr.4, S.1579-1587
ISSN: 1094-4087
Englisch
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IOF ()

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.

: http://publica.fraunhofer.de/dokumente/N-59405.html