| 用于光纤光栅线性调谐的悬臂梁结构优化 |
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| 引用本文： | 余有龙,耿淑伟.用于光纤光栅线性调谐的悬臂梁结构优化[J].光子学报,1998,27(8):714-718. |
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| 作者姓名： | 余有龙 耿淑伟 |
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| 作者单位： | [1]南开大学现代光学研究所 [2]哈尔滨建筑大学建工学院 |
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| 基金项目： | 国家自然科学基金重点项目,国家教委光学信息技术科学开放实验室资助 |
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| 摘 要： | 本文对用于光纤光栅(FBG)布喇格波长连续线性调谐的悬臂梁进行了深入地分析,并给出调谐公式.通过分析相同尺寸、不同截面形状的悬臂梁调谐的程度,对梁的结构进行了优化指出“凸”字形截面的悬臂比较适合于FBG线性调谐,优化后10cm长度的该梁0.01N的力作用时可以提供0.28nm甚至以上的波长调谐量.引入修正因子η=0.65,实验结果与理论值较好地吻合。
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| 关 键 词： | 光纤光栅 线性调谐 悬臂梁 |
| 收稿时间： | 1998-03-23 |
OPTIMIZATION ABOUT THE CANTILEVER USED FOR LINEARLY TURNING OF FIBER BRAGG GRATING |
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| Yu Youlong,Geng Shuwei,Liu Zhiguo,Dong Xiaoyi Institute of Modern Optics,Nankai University,Tianjin Received date:--.OPTIMIZATION ABOUT THE CANTILEVER USED FOR LINEARLY TURNING OF FIBER BRAGG GRATING[J].Acta Photonica Sinica,1998,27(8):714-718. |
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| Authors: | Yu Youlong Geng Shuwei Liu Zhiguo Dong Xiaoyi Institute of Modern Optics Nankai University Tianjin Received date:-- |
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| Institution: | Yu Youlong,Geng Shuwei,Liu Zhiguo,Dong Xiaoyi Institute of Modern Optics,Nankai University,Tianjin 300071 Received date:1998-03-23 |
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| Abstract: | The continuously linearly tunable fiber Bragg grating (FBG) that utilizes a cantilever is analyzed theoretically in this paper.A formula describing the linearly tuning is introduced.The cantilever’s stucture has been optimized by through calculating the wavelength shifts of different cantilevers which are with the same sizes and different section shapes.T-shaped section cantilever is pointed to be the best one to act as a linear tuner of FBG.After optimized,if L=10cm and 0.01N force is applied,it can provide over 0.28nm wavelength shift.If a correction index η=0.65 is introduced,experimental result coincides with the theoretical value perfectly. |
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| Keywords: | Fiber Bragg grating Linearly tuning Cantilever |
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