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Kapitza light guiding in photonic mesh lattice

: Muniz, A.L.M.; Alberucci, A.; Jisha, C.P.; Monika, M.; Nolte, S.; Morandotti, R.; Peschel, U.


Optics Letters 44 (2019), Nr.24, S.6013-6016
ISSN: 0146-9592
Fraunhofer IOF ()

We experimentally demonstrate the transverse confinement of light in the presence of a longitudinally periodic photonic potential with vanishing average. In agreement with Kapitza’s original findings in classical mechanics, we confirm that light undergoes a transverse localization due to the action of an effective potential proportional to the square of the first derivative of the potential. Experiments are performed based on (1 + 1)D synthetic dimensions realized in a fiber loop system, allowing for complete control of the transverse and longitudinal distributions of the potential.