Observation of defect-free surface modes in optical waveguide arrays.
We report on the experimental observation of novel defect-free surface modes predicted theoretically for modulated photonic lattices [I. L. Garanovich et al., Phys. Rev. Lett. 100, 203904 (2008)10.1103/PhysRevLett.100.203904]. We generate the linear surface modes in truncated arrays of periodically curved optical waveguides created in fused silica by a laser direct-writing technique. Our results demonstrate that the degree of surface wave localization can be controlled by selecting the waveguide bending amplitude.
Szameit
Alexander
A
Institute of Applied Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743 Jena, Germany.
Garanovich
Ivan L
IL
Heinrich
Matthias
M
Sukhorukov
Andrey A
AA
Dreisow
Felix
F
Pertsch
Thomas
T
Nolte
Stefan
S
Tünnermann
Andreas
A
Kivshar
Yuri S
YS