Second-order coupling in femtosecond-laser-written waveguide arrays.
We investigate the influence of second-order coupling in femtosecond-laser-written zigzag waveguide arrays, where the ratio Delta between second- and first-order coupling constants is adjusted from Delta=0.0 to Delta=2.8. Propagation patterns are observed directly via color center fluorescence.
Dreisow
Felix
F
Institute of Applied Physics, Friedrich-Schiller-University Jena, Jena, Germany. f.dreisow@uni-jena.de
Szameit
Alexander
A
Heinrich
Matthias
M
Pertsch
Thomas
T
Nolte
Stefan
S
Tünnermann
Andreas
A