氮化镓/掺偶氮苯聚合物光栅耦合器特性研究

量子电子学报 ›› 2019, Vol. 36 ›› Issue (4): 506-512.

• 纤维与波导光学 • 上一篇

氮化镓/掺偶氮苯聚合物光栅耦合器特性研究

班文君¹,朱冰²

1中国科学技术大学电子工程与信息科学系，安徽合肥 230027; 2中国科学院电磁空间信息重点实验室，安徽合肥 230027

收稿日期:2018-08-09 修回日期:2018-10-13 出版日期:2019-07-28 发布日期:2019-07-11
通讯作者: 朱冰（1964-），男，浙江省杭州市，博士，教授，博士生导师，主要从事光器件、光传感技术、空间光通信、量子接收机等方面的研究。 E-mail:zbing@ustc.edu.cn
作者简介:班文君（1992-），女，安徽省蚌埠市，研究生，主要从事光波导器件方面的研究。E-mail：1194551431@qq.com
基金资助:
Supported by Key Program of National Natural Science Foundation of China, project number 61377022.（国家自然科学基金重点项目，项目号61377022）

Study of Gallium Nitride/Azobenzene Polymer Grating Coupler

Ban Wenjun1,2，Zhu Bing1,2

1 Department of Electronic Engineering and Information Science,University of Science and Technology of China,Hefei, Anhui 230027,China; 2 Key Laboratory of Electromagnetic Space Information,Chinese Academy of Science,Hefei, Anhui 230027,China.

Received:2018-08-09 Revised:2018-10-13 Published:2019-07-28 Online:2019-07-11

摘要/Abstract

摘要： 提出一种氮化镓与掺偶氮苯聚合物复合材料集成光波导光栅耦合器，并通过仿真计算分析了这种器件的特性。用氮化镓铝衬底上对称的双氮化镓脊形光波导构成集成光波导定向耦合器，涂覆掺偶氮苯聚甲基丙烯酸甲酯聚合物作为包层。利用掺偶氮苯聚合物的光敏特性，在两脊形波导间区域通过周期性光照制作布拉格光栅。利用耦合模理论分析了这种光栅耦合器中各模式间的耦合关系，确定了各模式的耦合模方程，仿真计算了这种光栅耦合器各端口的输出特性，包括各模式的幅度随着传输距离的变化，以及各端口输出的幅度变化关系。在此基础上进一步分析了多周期耦合光栅耦合器的频谱特性，为集成光路中实现复杂频谱信号的操作提供了一种新的实现方案。

关键词: 波导光学, 光栅耦合器, 耦合模理论, 氮化镓, 偶氮苯聚合物

Abstract: An integrated optical waveguide grating coupler usinggallium nitride and azobenzene polymer composites was designed, and the characteristics of the device were analyzed by simulation. An integrated optical waveguide directional coupler was constructed using two symmetric gallium nitride ridge optical waveguides on a gallium nitride aluminum substrate, and an azobenzene-containing polymethyl methacrylate polymer was coated as a cladding. Using the photosensitive properties of the azobenzene polymer, a Bragg grating was fabricated by periodic illumination in the region between the two ridge waveguides. The coupling between the modes in the grating coupler was analyzed by the coupled mode theory. Using the coupled mode equations, the output characteristics of each port of the grating coupler were simulated，including the output of each mode as a function of the transmission distance and the amplitude variation under different coupling period conditions.The spectral characteristics of the multi-coupling-period grating coupler were further analyzed. A new scheme was provided to realize the operation of complex spectrum signal in integrated optical path.

Key words: waveguide optics, grating coupler, coupled mode theory, gallium nitride, azobenzene polymer

中图分类号:

TN256

班文君朱冰. 氮化镓/掺偶氮苯聚合物光栅耦合器特性研究[J]. 量子电子学报, 2019, 36(4): 506-512.

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氮化镓/掺偶氮苯聚合物光栅耦合器特性研究

Study of Gallium Nitride/Azobenzene Polymer Grating Coupler

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