Discrete diffraction in two-dimensional arrays of coupled waveguides in silica.
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.
Institute for Condensed Matter Theory and Optics, Friedrich-Schiller-Universität Jena, Max-Wien Platz 1, 07743 Jena, Germany.
Thomas
T
Pertsch
Ulf
U
Peschel
Falk
F
Lederer
Jonas
J
Burghoff
Matthias
M
Will
Stefan
S
Nolte
Andreas
A
Tünnermann