Direct measurement of second-order coupling in a waveguide lattice

被引：16

作者：

Keil, Robert ^{[1
]}

Pressl, Benedikt ^{[1
]}

Heilmann, Rene ^{[2
]}

Graefe, Markus ^{[2
]}

Weihs, Gregor ^{[1
]}

Szameit, Alexander ^{[2
]}

机构：

[1] Univ Innsbruck, Inst Expt Phys, A-6020 Innsbruck, Austria

[2] Univ Jena, Inst Appl Phys, Abbe Ctr Photon, D-07743 Jena, Germany

来源：

APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 24期

基金：

奥地利科学基金会; 欧洲研究理事会;

关键词：

OPTICAL BLOCH OSCILLATIONS; ARRAYS; LASER; INTERFERENCE;

D O I：

10.1063/1.4937807

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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. (C) 2015 AIP Publishing LLC.

引用

页数：4

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