Nonreciprocity in giant Goos-H\"anchen shift due to symmetry breaking
Optics
2011-05-25 v1
Abstract
We study giant Goos-H\"anchen (GH) shift in reflection from a near-symmetric coupled waveguide structure. We show that broken spatial symmetry can lead to GH shift with different signs for illumination from the opposite ends, a direct consequence of the nonreciprocity relations considered earlier (Opt. Lett. 27,1205 (2002)). Symmetry breaking by adding a few nm thick bio-layer to one of the guides is enough to observe the nonreciprocity. This may have far reaching implications for efficient biosensing.
Cite
@article{arxiv.1105.4703,
title = {Nonreciprocity in giant Goos-H\"anchen shift due to symmetry breaking},
author = {Madhuri Kumari and S Dutta Gupta},
journal= {arXiv preprint arXiv:1105.4703},
year = {2011}
}