Reversible nonreciprocity in photonic structures infiltrated with liquid crystals

Abstract

We demonstrate how to achieve reversible nonreciprocal optical response in a periodic photonic structure with a pair of defects, one of them being a nonlinear liquid crystal defect layer. The twin defect layers structure is symmetric at low intensity and becomes asymmetric above a power threshold corresponding to the optical reordering of the liquid crystal. We show that nonreciprocal effects can be reversed by changing the wavelength as a consequence of the defect mode dependent light localization inside the structure.

3 pages, 2 figures

References in corpus (3)

• Nonlinear transmission and light localization in photonic crystal waveguides
• Tunable all-optical switching in periodic structures with liquid-crystal defects
• All-optical switching and multistability in photonic structures with liquid crystal defects

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