title: Tunable Bloch surface waves in anisotropic photonic crystals based on lithium niobate thin films.
abstract: We present an original type of one-dimensional photonic crystal that includes one anisotropic layer made of a lithium niobate thin film. We demonstrate the versatility of such a device sustaining different Bloch surface waves (BSWs), depending on the orientation of the incident wave. By varying the orientation of the illumination of the multilayer, we measured an angle variation of 7° between the BSWs corresponding to the extraordinary and the ordinary index of the lithium niobate thin film. The potential of such a platform opens the way to novel tunable and active planar optics based on the electro- and thermo-optical properties of lithium niobate.
authors.forename: Tatiana
authors.initials: T
authors.lastname: Kovalevich
authors.forename: Abdoulaye
authors.initials: A
authors.lastname: Ndao
authors.forename: Miguel
authors.initials: M
authors.lastname: Suarez
authors.forename: Saulius
authors.initials: S
authors.lastname: Tumenas
authors.forename: Zigmas
authors.initials: Z
authors.lastname: Balevicius
authors.forename: Arunas
authors.initials: A
authors.lastname: Ramanavicius
authors.forename: Ieva
authors.initials: I
authors.lastname: Baleviciute
authors.forename: Markus
authors.initials: M
authors.lastname: Häyrinen
authors.forename: Matthieu
authors.initials: M
authors.lastname: Roussey
authors.forename: Markku
authors.initials: M
authors.lastname: Kuittinen
authors.forename: Thierry
authors.initials: T
authors.lastname: Grosjean
authors.forename: Maria-Pilar
authors.initials: MP
authors.lastname: Bernal