Electro-Optical Modulation Based on Pockels Effect in BaTiO3 With a Multi-Domain Structure

Abstract : The influence of an in-plane multi-domain structure in BaTiO3 films grown on SrTiO3/Si buffers for highly efficient electro-optic modulation has been analyzed. The modulation performance can be significantly enhanced by rotating a certain angle, the optical waveguide, with respect to the BaTiO3 crystallographic axes. A robust electro-optical performance against variations in the domain structure as well as the lowest Vπ voltage can be achieved by using the rotation angles between 35° and 55°. Our calculations show that Vπ voltages below 1.7 V for a modulation length of 2 mm can be obtained by means of a CMOS compatible hybrid silicon/BaTiO3 waveguide structure.
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Submitted on : Tuesday, March 14, 2017 - 11:07:24 AM
Last modification on : Tuesday, November 19, 2019 - 2:45:10 AM

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P. Castéra, Ana Gutierrez, Domenico Tulli, Sébastien Cueff, Régis Orobtchouk, et al.. Electro-Optical Modulation Based on Pockels Effect in BaTiO3 With a Multi-Domain Structure. IEEE Photonics Technology Letters, Institute of Electrical and Electronics Engineers, 2016, 28 (9), pp.990. ⟨10.1109/LPT.2016.2522509⟩. ⟨hal-01489122⟩

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