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arXiv · 1105.4703

Nonreciprocity in giant Goos-H\"anchen shift due to symmetry breaking

Madhuri Kumari·S Dutta Gupta
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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.

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Madhuri Kumari, S Dutta Gupta. 2011-05-24. Nonreciprocity in giant Goos-H\"anchen shift due to symmetry breaking. https://arxiv.org/abs/1105.4703

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