| 用于倾斜入射的波分复用薄膜滤光片的特性及改进 |
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| 引用本文： | 顾培夫,李海峰,章岳光,刘旭,唐晋发.用于倾斜入射的波分复用薄膜滤光片的特性及改进[J].光学学报,2003,23(3):77-380. |
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| 作者姓名： | 顾培夫 李海峰 章岳光 刘旭 唐晋发 |
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| 作者单位： | 浙江大学现代光学仪器国家重点实验室,杭州,310027 |
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| 基金项目： | 高等学校重点实验室访问学者基金资助课题 |
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| 摘 要： | 对倾斜入射时窄带薄膜滤光片的特性作了描述 ,由于低折射率间隔层的滤光片 ,倾斜入射时 p偏振分量的通带比s分量更移向短波 ,而高折射率间隔层的滤光片则反之 ,因此可把间隔层同时设计成高、低折射率两种材料 ,或选用适当的中间折射率材料 ,使p分量和s分量两个通带的中心波长重合。设计了用于 2 0°入射角的密集波分复用 (DWDM )滤光片 ,并给出了实验结果。
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| 关 键 词： | 光学元件 倾斜入射 窄带滤光片 消偏振设计 |
| 收稿时间： | 2002/4/1 |
Characteristics and Improvement of Dense Wavelength Division Multiplexing (DWDM) Thin Film Filters Used in Tilted Incidence |
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| Gu Peifu,Li Haifeng,Zhang Yueguang,Liu Xu,Tang Jinfa.Characteristics and Improvement of Dense Wavelength Division Multiplexing (DWDM) Thin Film Filters Used in Tilted Incidence[J].Acta Optica Sinica,2003,23(3):77-380. |
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| Authors: | Gu Peifu Li Haifeng Zhang Yueguang Liu Xu Tang Jinfa |
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| Abstract: | The characteristic of thin film narrowband filters used in tilted incidence is described. The wavelength shift to shorter wavelength in a low index spacer filter for p polarization component is larger than that for s polarization component when filter is tilted. On the contrary, the shift in a high index spacer filter for p component is less than that for s component. Therefore the passbands of a tilted filter can be centered at the same wavelength for two polarization modes by means of using high and low index materials for a spacer, or selecting a moderate index material instead of a spacer. Designs of DWDM filters used for incident angle of 20°are presented, and the experimental results are discussed. |
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| Keywords: | optical component tilted incidence narrow band pass filter non polarization design |
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