| 超宽带聚合物调制器的优化设计 |
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| 引用本文： | 沈杰,张晓霞,黄春阳,文玥,刘宏明,朱燕.超宽带聚合物调制器的优化设计[J].光学与光电技术,2011,9(2):63-67. |
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| 作者姓名： | 沈杰 张晓霞 黄春阳 文玥 刘宏明 朱燕 |
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| 作者单位： | 电子科技大学光电信息学院,四川成都,610054 |
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| 基金项目： | 国家高技术研究发展计划(863计划)新材料领域 |
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| 摘 要： | 设计了一种以聚合物作为材料的低损耗、宽带宽的Mach—Zehnder光波导调制器。分析了调制器的脊波导的模式特性，设计了脊波导的结构，并使用BPM软件模拟了脊形波导的光场分布；通过对光场分布的分析，优化了脊形波导的宽度Wg，脊高6，芯层高度H。同时对聚合物调制器的电极进行了优化，包括电极宽度W和电极间距D，使得调制器有较小的导体损耗以及较好的阻抗匹配。并结合了脊波导的结构参数和电极的优化参数，给出了优化结果，它能够使微波的有效折射率与光波的有效折射率达到匹配，从而使带宽达到177GHz，导体损耗为0．2569dB／cm·GHz1／2。
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| 关 键 词： | 聚合物调制器 脊形波导 有效折射率 特征阻抗 带宽 |
Design and Optimization of the Ultra-Broadband Polymer Optical Modulator |
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| SHEN Jie,ZHANG Xiao-xia,HUANG Chun-yang,WEN Yue,LIU Hong-ming,ZHU Yan.Design and Optimization of the Ultra-Broadband Polymer Optical Modulator[J].optics&optoelectronic technology,2011,9(2):63-67. |
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| Authors: | SHEN Jie ZHANG Xiao-xia HUANG Chun-yang WEN Yue LIU Hong-ming ZHU Yan |
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| Institution: | (School of Optoelectronic Information,University of Electronic Science and Technology of China,Chengdu 610054,China) |
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| Abstract: | A low loss and wide bandwidth Mach Zehnder modulator is designed which is based on the polymer material. The mode characteristic is analyzed and the ridge waveguide is designed. Optical field distribution is simulated by the software of Beam Propagation Method （BPM）. During the analysis, parameters of the ridge waveguide are optimized, including the width Wg, the rib height b, and the total core height H. Aiming at a smaller conductor loss and better impedance match, the structure parameters of electrode are also optimized. Combining with the parameters of the ridge waveguide and the electrode, velocities match between lightwave and microwave can be achieved, an ultra-broadband of 177 GHz and low conductor loss of 0. 256 9 dB/cm ·GHz1/2 are well designed. |
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| Keywords: | polymer modulator ridge waveguide effective refraction index the characteristic impedance bandwidth |
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