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