Direct measurement of second-order coupling in a waveguide lattice
Optics
2015-12-16 v2
Abstract
We measure the next-nearest-neighbour coupling in an array of coupled optical waveguides directly via an integrated eigenmode interferometer. In contrast to light propagation experiments, the technique is insensitive to nearest-neighbour dynamics. Our results show that second-order coupling in a linear configuration can be suppressed well below the level expected from the exponential decay of the guided modes.
Keywords
Cite
@article{arxiv.1510.07900,
title = {Direct measurement of second-order coupling in a waveguide lattice},
author = {Robert Keil and Benedikt Pressl and René Heilmann and Markus Gräfe and Gregor Weihs and Alexander Szameit},
journal= {arXiv preprint arXiv:1510.07900},
year = {2015}
}
Comments
Accepted by Applied Physics Letters. After publication, it will be found at http://scitation.aip.org/content/aip/journal/apl