Photonics Research, 2017, 5 (6): 06000649, Published Online: Dec. 7, 2017  

Experimental evidence of Bloch surface waves on photonic crystals with thin-film LiNbO3 as a top layer Download: 521次

Author Affiliations
1 Département d’Optique P. M. Duffieux, Institut FEMTO-ST, UMR 6174 CNRS, Université Bourgogne Franche-Comté, 15B Avenue des Montboucons, 25030 Besan?on Cedex, France
2 Optics & Photonics Technology Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), Rue de la Maladière 71b, Neuchatel CH-2000, Switzerland
Abstract
Strong nonlinear, electro-optical, and thermo-optical properties of lithium niobate (LN) have gained much attention. However, the implementation of LiNbO3 in real devices is not a trivial task due to difficulties in manufacturing and handling thin-film LN. In this study, we investigate an optical device where the Bloch surface wave (BSW) propagates on the thin-film LN to unlock its properties. First, access to the LN film from air (or open space) is important to exploit its properties. Second, for sustaining the BSW, one-dimensional photonic crystal (1DPhC) is necessary to be fabricated under the thin-film LN. We consider two material platforms to realize such a device: bulk LN and commercial thin-film LN. Clear reflectance dips observed in far-field measurements demonstrate the propagation of BSWs on top of the LN surface of the designed 1DPhCs.

Tatiana Kovalevich, Djaffar Belharet, Laurent Robert, Myun-Sik Kim, Hans Peter Herzig, Thierry Grosjean, Maria-Pilar Bernal. Experimental evidence of Bloch surface waves on photonic crystals with thin-film LiNbO3 as a top layer[J]. Photonics Research, 2017, 5(6): 06000649.

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