蘑菇型行波电吸收调制器的全矢量有限差分光学分析

2009 9th International Conference on Numerical Simulation of Optoelectronic Devices Pub Date : 2009-10-30 DOI:10.1109/NUSOD.2009.5297233

K. Abedi, V. Ahmadi, M. Moravvej-Farshi, M. Razaghi

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引用次数: 1

摘要

行波电吸收调制器(TWEAM)波导中p-i-n包层宽度越大，电阻和微波传播损耗就越小，从而提高了高速电光响应。本文提出了一种基于全矢量有限差分的光模求解器来分析蘑菇型TWEAM。计算了高频TWEAM设计中光学有效指数和横模约束因子等重要参数。考虑了波导中微波场和光场的相互作用，计算了蘑菇型TWEAM的调制响应，并与传统脊型TWEAM进行了比较。当波导长度为200 μm时，计算得到脊型和蘑菇型TWEAM的3dB带宽分别为139 GHz和166 GHz，当波导长度为300 μm时，计算得到的3dB带宽分别为114 GHz和126 GHz。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Optical analysis of mushroom-type traveling wave electroabsorption modulatorsusing full-vectorial finite difference method

Larger width of P-cladding layer in p-i-n waveguide of traveling wave electroabsorption modulator (TWEAM) results in lower resistance and microwave propagation loss which provides an enhanced high speed electro-optical response. In this paper, a full-vectorial finite-difference-based optical mode solver is presented to analyze mushroom-type TWEAM. The important parameters in the high-frequency TWEAM design such as optical effective index and transverse mode confinement factor are calculated. The modulation response of mushroom-type TWEAM is calculated by considering interaction between microwave and optical fields in waveguide and compared with conventional ridge-type TWEAM. The calculated 3dB bandwidths for ridge-type and mushroom-type TWEAM are about 139 GHz and 166 GHz for 200 μm and 114 GHz and 126 GHz for 300 μm waveguide length, respectively.

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2009 9th International Conference on Numerical Simulation of Optoelectronic Devices

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