| MEMS阵列光开关的光纤耦合设计 |
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| 引用本文： | 牛凯,叶雄英,周兆英,侯斌,刘胜.MEMS阵列光开关的光纤耦合设计[J].光学技术,2004,30(4):431-433. |
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| 作者姓名： | 牛凯 叶雄英 周兆英 侯斌 刘胜 |
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| 作者单位： | 1. 清华大学,精密仪器与机械学系,北京,100084
2. 华中科技大学,微系统研究中心,武汉,430074 |
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| 基金项目： | 国家863计划资助项目(2001AA312250) |
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| 摘 要： | 利用高斯光束传输理论进行了阵列光开关的光纤耦合设计计算。根据ABCD矩阵推导出了光束通过球透镜时的传播规律,计算了在光纤与光纤之间两个球透镜耦合的效率,分析了影响耦合效率的因素。通过设计计算,确定了光纤端部的位置,使得整个损耗达到了最小。从理论上来看,在波长λ=1 55μm时,4×4阵列光开关的耦合效率可以达到91%以上。
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| 关 键 词： | 高斯光束 ABCD矩阵 球透镜 耦合效率 |
| 文章编号： | 1002-1582(2004)04-0431-03 |
| 修稿时间： | 2003年11月3日 |
Design of coupling efficiency between fibers in mems optical switch array |
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| NIU Kai,YE Xiong-ying,ZHOU Zhao-ying,HOU Bin,LIU Sheng.Design of coupling efficiency between fibers in mems optical switch array[J].Optical Technique,2004,30(4):431-433. |
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| Authors: | NIU Kai YE Xiong-ying ZHOU Zhao-ying HOU Bin LIU Sheng |
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| Institution: | NIU Kai~1,YE Xiong-ying~1,ZHOU Zhao-ying~1,HOU Bin~2,LIU Sheng~2 |
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| Abstract: | The efficiency of fiber-coupling calculation in optical switches based on the theory of Gaussian beam is introduced. The propagation rule through ball lens based on the ABCD matrix is presented. The coupling efficiency of SMF to SMF through two ball lenses is calculated. The contributing factor of the coupling efficiency is analyzed. The position of the tip of SMF is determined by numerical calculation, and the insert lose reaches minimum. Theoretically, the coupling efficiency of the 4×4 optical switch is above 91% at λ=(1.55)μm. |
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| Keywords: | Gaussian beam ABCD matrix ball lens coupling efficiency |
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