| 准共线集成声光模式转换器的性能分析与设计 |
| |
| 引用本文： | 吕敏,崔建民,刘维,崔芳,孙雨南.准共线集成声光模式转换器的性能分析与设计[J].光子学报,2005,34(5):662-665. |
| |
| 作者姓名： | 吕敏 崔建民 刘维 崔芳 孙雨南 |
| |
| 作者单位： | 北京理工大学信息科学技术学院光电工程系,北京,100081 |
| |
| 基金项目： | 国家“863计划”资助项目(2002AA312262) |
| |
| 摘 要： | 报道了一种SiO2薄膜声波导和Ti∶LiNbO3光波导之间存在一个角度的准共线的模式转换器结构, 利用波导模式分析导出薄膜声波导的宽度限制; 利用模式耦合理论得出了声光模式转换特性和耦合系数的加权形式. 实现了对耦合系数的加权, 较好地抑制了旁瓣. 在综合考虑旁瓣和线宽的条件下, 设计了这种TE/TM声光模式转换器, 其旁瓣为－16.8 dB, －3 dB线宽和－10 dB线宽分别为1.37 nm和2.31 nm.
|
| 关 键 词： | 光通信 声光模式转换器 加权耦合 旁瓣 |
| 收稿时间： | 2004-05-08 |
| 修稿时间： | 2004年5月8日 |
Performance Analysis and Design of Quasi-collinear Acousto-optic Mode Converter |
| |
| Lü Min,Cui Jianmin,Liu Wei,CUI Fang,Sun Yunan.Performance Analysis and Design of Quasi-collinear Acousto-optic Mode Converter[J].Acta Photonica Sinica,2005,34(5):662-665. |
| |
| Authors: | Lü Min Cui Jianmin Liu Wei CUI Fang Sun Yunan |
| |
| Institution: | (Department of Optoelectronic Engineering, School of Information science and Technology, Beijing Institute of Technology, Beijing 100081) |
| |
| Abstract: | The design of a SiO2 film-loaded Ti: LiNbO3 integrated acousto-optic tunable filter is reported. The configuration, in which an angular offset between the acoustic and optical waveguides is introduced, offers a good performance of suppressing sidelobes. With the mode analysis of the acoustic wave guide and the theory of coupling mode the limit of the width, weighted coupling coefficient and the characteristics of the conversion of acousto-optic modes are obtained. Considered the compromise between the sidelobes suppression and filtering bandwidth, the theoretical results are gained that the sidelobes level is -16.8 dB and the theoretical values of bandwidths of -3 dB and -10 dB is 1.37 nm and 2.31 nm. |
| |
| Keywords: | Optical communication Acousto-optic mode converter Weighted coupling Sidelobe |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《光子学报》浏览原始摘要信息 |
| 点击此处可从《光子学报》下载免费的PDF全文 |
|
