Tunable resonant narrow-band filter based on electro-optic materials

Da Shu; Anne-Laure Fehrembach; Evgueni Popov

doi:10.1117/12.922626

25 April 2012 Tunable resonant narrow-band filter based on electro-optic materials

Da Shu, Anne-Laure Fehrembach, Evgueni Popov

Proceedings Volume 8425, Photonic Crystal Materials and Devices X; 842520 (2012) https://doi.org/10.1117/12.922626
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

We propose a tunable resonant narrow-band optical filter based on a two-dimensional grating on the top of a stack of dielectric layers including a layer of electro-optic (E-O) material, and demonstrate numerical results of the tunability. The structure is periodic in two orthogonal directions and the basic pattern is designed in order to increase the angular tolerance of the filter. The LiNbO₃ and BaTiO₃ were chosen due to their strong electro-optical properties. When an external electric field is applied on the E-O material layer, a displacement of the resonant peak in the spectra is observed. We have chosen the orientation of each E-O crystal so that the external electric field is applied in the direction corresponding to the greatest E-O coefficient.

Citation Download Citation

Da Shu, Anne-Laure Fehrembach, and Evgueni Popov "Tunable resonant narrow-band filter based on electro-optic materials", Proc. SPIE 8425, Photonic Crystal Materials and Devices X, 842520 (25 April 2012); https://doi.org/10.1117/12.922626

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