| LiNbO3 1×2非对称电极Y分叉数字光开关的研究 |
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| 引用本文： | 肖彩侠,李锡华,周强,杨健义,江晓清,王明华.LiNbO3 1×2非对称电极Y分叉数字光开关的研究[J].光通信研究,2007,33(5):50-52. |
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| 作者姓名： | 肖彩侠 李锡华 周强 杨健义 江晓清 王明华 |
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| 作者单位： | 浙江大学信息学院,浙江杭州310027 |
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| 基金项目： | 浙江省自然科学基金资助项目（Y105088） |
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| 摘 要： | 文章提出一种关于非对称电极低串扰数字光开关的新型设计方案，在Y分叉后端引入S弯曲波导，通过在Y分叉处的非对称电极和弯曲波导的弯曲电极处施加一定的同步电压，实现了比没有S弯曲的开关更低的串扰。此种设计采用有限差分光束传播方法（FDBPM）来分析，模拟结果显示，在光波长为1．55μm时，开关电压8V．串扰〈-25dB。
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| 关 键 词： | 数字光开关 非对称电极 S弯曲波导 铌酸锂 |
| 文章编号： | 1005-8788（2007）05-0050-03 |
| 收稿时间： | 2007/5/21 |
| 修稿时间： | 2007-05-21 |
Study on LiNbO3 1×2 asymmetrical electrode Y branch digital optical switch |
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| Xiao Caixia, Li Xihua, Zhou Qiang, Yang Jiangyi, Jiang Xiaoqing, Wang Minghua.Study on LiNbO3 1×2 asymmetrical electrode Y branch digital optical switch[J].Study on Optical Communications,2007,33(5):50-52. |
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| Authors: | Xiao Caixia Li Xihua Zhou Qiang Yang Jiangyi Jiang Xiaoqing Wang Minghua |
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| Affiliation: | College of Information Science and Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | A novel design scheme for digital optical switch with high extinction ratio by employing S curve waveguide at the end of the Y branch is proposed. Higher extinction ratio than that of the device without S curve waveguide is obtained by applying certain synchronous voltage to the Y branch and the curve electrode of the S curve waveguide. Finite Difference Beam Propagation Method (FDBPM) is used to simulate the performance of the design, and the results show that the extinction ratio can exceed -25 dB with the switch voltage of about 8 V at 1.55 μm. |
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| Keywords: | Digital Optical Switch(DOS) asymmetrical electrode S curve waveguide Lithium niobate |
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