Mesoporous sol-gel silica cladding for hybrid TiO2/electro-optic polymer waveguide modulators

被引：7

作者：

Enami, Yasufumi ^{[1
]}

Kayaba, Yasuhisa ^{[2
]}

Luo, Jingdong ^{[3
]}

Jen, Alex K. -Y. ^{[3
]}

机构：

[1] Kochi Univ Technol, Grad Sch Engn, Kochi 7828502, Japan

[2] Hiroshima Univ, Inst Nanodevice & Bio Syst, Higashihiroshima, Hiroshima 7398527, Japan

[3] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 13期

关键词：

Silica;

D O I：

10.1364/OE.22.016418

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report the efficient poling of an electro-optic (EO) polymer in a hybrid TiO2/electro-optic polymer multilayer waveguide modulator on mesoporous sol-gel silica cladding. The mesoporous sol-gel silica has nanometer-sized pores and a low refractive index of 1.24, which improves mode confinement in the 400-nm-thick EO polymer film in the modulators and prevents optical absorption from the lower Au electrode, thereby resulting in a lower half-wave voltage of the modulators. The half-wave voltage (V-pi) of the hybrid modulator fabricated on the mesoporous sol-gel silica cladding is 6.0 V for an electrode length (L-e) of 5 mm at a wavelength of 1550 nm (V pi Le product of 3.0 V.cm) using a low-index guest-host EO polymer (in-device EO coefficient of 75 pm/V). (C)2014 Optical Society of America

引用

页码：16418 / 16423

页数：6

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