Coupling light into a slow-light photonic-crystal waveguide from a free-space normally-incident beam
Language
en
Article de revue
This item was published in
Optics Express. 2013-06-18, vol. 21, p. 15144-15154
Optical Society of America - OSA Publishing
English Abstract
We present a coupler design allowing normally-incident light coupling from free-space into a monomode photonic crystal waveguide operating in the slow-light regime. Numerical three-dimensional calculations show that ...Read more >
We present a coupler design allowing normally-incident light coupling from free-space into a monomode photonic crystal waveguide operating in the slow-light regime. Numerical three-dimensional calculations show that extraction efficiencies as high as 80% can be achieved for very large group indices up to 100. We demonstrate experimentally the device feasibility by coupling and extracting light from a photonic crystal waveguide over a large group-index range (from 10 to 60). The measurements are in good agreement with theoretical predictions. We also study numerically the impact of various geometrical parameters on the coupler performances.Read less <
Origin
Hal imported