基于二氧化钛环形谐振器的电光聚合物调制器。

TiO₂ ring-resonator-based EO polymer modulator.

作者信息

Qiu Feng, Spring Andrew M, Maeda Daisuke, Ozawa Masa-Aki, Odoi Keisuke, Aoki Isao, Otomo Akira, Yokoyama Shiyoshi

出版信息

Opt Express. 2014 Jun 16;22(12):14101-7. doi: 10.1364/OE.22.014101.

DOI:10.1364/OE.22.014101

Abstract

In this work, an electro-optic (EO) ring resonator modulator was designed and fabricated in a waveguide consisting of a titanium dioxide (TiO)₂ core, silicon dioxide (SiO₂) buffer layer, EO polymer claddings, and electrodes. By optimizing the thickness of the TiO₂ and SiO₂layers, the modulator could satisfy the single-mode requirement; furthermore 52.5% TM mode was confined in the active EO polymer layers. The designed modulator could also pole the EO polymer effectively regardless of its resistivity. Therefore, the EO modulator was observed to show a high resonance wavelength shift of 2.25 × 10(-2) nm/V. The intensity modulation at 1550 nm showed a Vp-p = 1.9 V for a 3dB distinction ratio.

摘要

在这项工作中，设计并制造了一种电光（EO）环形谐振器调制器，该调制器位于由二氧化钛（TiO₂）纤芯、二氧化硅（SiO₂）缓冲层、电光聚合物包层和电极组成的波导中。通过优化TiO₂层和SiO₂层的厚度，该调制器能够满足单模要求；此外，52.5%的横磁（TM）模式被限制在有源电光聚合物层中。所设计的调制器还能有效地对电光聚合物进行极化，而不管其电阻率如何。因此，观察到该电光调制器显示出2.25×10⁻²nm/V的高谐振波长偏移。在1550nm处的强度调制对于3dB区分比显示出峰峰值电压（Vp-p）为1.9V。