We report the efficient poling for efficient poling of electro-optic (EO) polymer in a hybrid EO polymer/TiO vertical slot waveguide modulators based on enhanced conductivity of sol-gel silica under-cladding. The electrical volume conductivity of sol-gel silica cladding increases approximately 30 times when the calcining time of the cladding layer is critically reduced to 45 minutes, which increases the in-device EO coefficient of the 600-nm-thick EO polymer film in modulators and reduces the lower half-wave voltage (V) of the modulators. The lowest driving voltage (V) of the TiO slot waveguide modulator is 2.0 V for an electrode length (L) of 10 mm and wavelength of 1550 nm (VL = 2.0 V-cm) for the low-index guest-host EO polymer SEO125. The optical propagation loss is reduced to 7 dB/cm.
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机译：我们报告了基于增强的溶胶-凝胶二氧化硅下包层电导率的混合EO聚合物/ TiO垂直槽波导调制器中的电光（EO）聚合物的有效极化的有效极化。当将覆层的煅烧时间严格减少到45分钟时，溶胶-凝胶二氧化硅覆层的体积电导率增加大约30倍，这会增加调制器中600 nm厚的EO聚合物膜的器件内EO系数。降低调制器的下半波电压（V）。对于10毫米电极长度（L）和1550纳米波长（VL = 2.0 V-cm）的TiO缝隙波导调制器，最低驱动电压（V）对于低折射率客体-主体EO聚合物SEO125为2.0 V 。光传播损耗降低到7 dB / cm。
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