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Opt Lett. 2004 Mar 1;29(5):468-70.

Discrete diffraction in two-dimensional arrays of coupled waveguides in silica.

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  • 1Institute for Condensed Matter Theory and Optics, Friedrich-Schiller-Universit√§t Jena, Max-Wien Platz 1, 07743 Jena, Germany.


The propagation of light in 5 x 5 and 7 x 7 cubic lattices of evanescently coupled waveguides is investigated for the first time, to the authors' knowledge. The results reveal ideal discrete diffraction and demonstrate the excellent quality of the waveguide arrays, which were manufactured in fused silica by femtosecond-laser-induced refractive-index modifications.

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