| 集成光学声光可调谐滤波器中的权重切趾 |
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| 引用本文： | 张胜甲,胡鸿璋,刘威,耿凡. 集成光学声光可调谐滤波器中的权重切趾[J]. 中国激光, 2002, 29(5): 411-414 |
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| 作者姓名： | 张胜甲 胡鸿璋 刘威 耿凡 |
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| 作者单位： | 1. 天津大学理学院应用物理系,天津,300072
2. 中国航天机电工业总公司8358所,天津,300192 |
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| 基金项目： | 国家自然科学基金 (批准号 :10 0 84 0 0 1)资助项目 |
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| 摘 要： | 理论分析了权重耦合的声指向耦合器的原理及其在滤波器切趾中的应用 ,并且根据理论设计了声波导的方案 ,分析了应用这种声波导的滤波器的转换特性。在X切Y传的LiNbO3基底上实际制作了这种滤波器。实验测定表明 ,侧瓣被抑制到 - 14dB ,- 3dB带宽为 2 0nm。
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| 关 键 词： | 集成光学 波长滤波器 声光耦合 切趾 |
| 收稿时间： | 2001-03-12 |
Weighted Apodization in Integrated Optical Acousto-optic Tunable Filter |
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| ZHANG Sheng jia ,HU Hong zhang ,LIU Wei ,GENG Fan. Weighted Apodization in Integrated Optical Acousto-optic Tunable Filter[J]. Chinese Journal of Lasers, 2002, 29(5): 411-414 |
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| Authors: | ZHANG Sheng jia HU Hong zhang LIU Wei GENG Fan |
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| Affiliation: | ZHANG Sheng jia 1,HU Hong zhang 1,LIU Wei 1,GENG Fan 2 1Department of Applied Physics,School of Science,Tianjin University,Tianjin 300072 2The 8358th Institute,The Third Academy,CASC,Tianjin 300192 |
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| Abstract: | In this paper, the principle of weighted directional coupler and its application in apodization of integrated acousto optic tunable filter (IAOTF) have been analyzed and discussed. According to the theoretical analysis, the acoustic waveguide has been designed and the TE/TM mode conversion characteristics of AOTF have been analyzed. Based on the results, practical filter has been fabricated on the substrate of X cut, Y propagate LiNbO 3. Experimental measurement shows that sidelobes are suppressed to -14 dB and -3 dB bandwidth is 2.0 nm. |
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| Keywords: | integrated optics wavelength filter acousto optic coupling apodization |
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