Reduction of switching voltage for electro-optic polymer switches based on multilayer slot waveguide structures

我们展示了一种新型的混合溶胶-凝胶二氧化硅/电光(EO)聚合物定向耦合开关，以及一种混合溶胶-凝胶二氧化硅/电光聚合物调制器的长期稳定性。此外，在对新型多层缝隙光波导调制器的外加电场进行了实验和数值分析后，将其外加电场提高了一个数量级。我们将多层缝隙波导调制器中的电极间距减小到1μm，而没有遭受进一步的光学损耗，从而使场强提高了10倍。

We demonstrated novel hybrid sol-gel silica/electro-optic (EO) polymer directional coupler switches, and long-term stability for a hybrid sol-gel silica/EO polymer modulators. Moreover, we enhanced the applied field by one order of magnitude in novel multilayer slot waveguide modulators, after experimental and numerical analysis was performed for the reduction of the inter-electrode distance in the waveguides. We reduced the inter-electrode distance down to 1μm in the multilayer slot waveguide modulators without suffering further optical loss, which results in ten times enhancement of the field.