期刊
OPTICS EXPRESS
卷 23, 期 12, 页码 15332-15342出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.23.015332
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资金
- European Commission [FP7-ICT-2013-11-619456 SITOGA]
- [TEC2012-38540 LEOMIS]
The influence of BaTiO3 ferroelectric domain orientations for high efficiency electro-optic modulation has been thoroughly analyzed. The Mach-Zehnder modulator structure is based on a CMOS compatible silicon/BaTiO3/silicon slot waveguide that supports both TE and TM polarizations whereas the Pockels effect is exploited by the application of a horizontal electric field with lateral electrodes placed on top of the BaTiO3 layer. The influence of the waveguide parameters has been optimized for each configuration and the lowest V-pi voltage combined with low losses has been determined. A V pi L as low as 0.27 V.cm has been obtained for a-axis oriented BaTiO3 and TE polarization by rotating the waveguide structure to an optimum angle. (C) 2015 Optical Society of America
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