| 液晶法布里-玻罗滤波器可调谐特性分析 |
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| 引用本文： | 申溯,何赛灵. 液晶法布里-玻罗滤波器可调谐特性分析[J]. 光子学报, 2005, 34(5): 713-717 |
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| 作者姓名： | 申溯 何赛灵 |
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| 作者单位： | 浙江大学光电系现代光学仪器国家重点实验室,光及电磁波研究中心,杭州,310027;浙江大学光电系现代光学仪器国家重点实验室,光及电磁波研究中心,杭州,310027 |
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| 摘 要： | 分析了液晶法布里－玻罗可调滤波器中介质反射镜反射相位引起的峰值波长漂移. 液晶法－玻滤波器通过外加电压调谐峰值波长, 反射相位会导致峰值波长漂移使器件不能达到DWDM系统的使用要求. 本文推导了一套计算反射镜反射相位的公式,将它应用于液晶法-玻可调滤波器的理论设计, 模拟结果定量表示了反射相位对峰值波长造成的影响. 这对确定液晶可调滤波器峰值波长和设计器件电驱动装置具有重要意义. 由此设计了一个在光通讯波段可单调调谐的液晶法-玻滤波器.
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| 关 键 词： | 液晶 可调谐滤波器 Fabry-Perot腔 反射位相 |
| 收稿时间： | 2004-03-24 |
| 修稿时间： | 2004-03-24 |
Analysis of Liquid Crystal Tunable Febry-Perot Etalon Filters |
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| SHEN Su,He Sailing. Analysis of Liquid Crystal Tunable Febry-Perot Etalon Filters[J]. Acta Photonica Sinica, 2005, 34(5): 713-717 |
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| Authors: | SHEN Su He Sailing |
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| Affiliation: | (State Key Laboratory, Department of Optical Engineering, Zhejiang University, Hangzhou 310027) |
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| Abstract: | The influence of the reflectance phase shift of the reflector on the peak wavelength in a liquid crystal Febry-Perot etalon (LCFPE) filter is discussed. In the tunable LCFPE filter, the peak wavelength is selected by adjusting the applied external voltage. The peak wavelength shifts due to the wavelength-dependent phase shift of the reflector. A set of simple formulas which can give quickly the phase shift are derived. The simulation results indicate that the reflective phase shift can not be ignored in the design of a LCFPE filter as it plays an important role in determining the peak wavelength and the applied voltage of the device. Using these formulas, a tunable LCFPE filter in the optical communication C-Band is designed. |
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| Keywords: | Liquid crystal Tunable filter FPE Phase shift of reflectance |
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