| 电光晶体中电场分布对相位调制的影响 |
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| 引用本文： | 刘春刚,胡军,张蓉竹. 电光晶体中电场分布对相位调制的影响[J]. 半导体光电, 2010, 31(5) |
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| 作者姓名： | 刘春刚 胡军 张蓉竹 |
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| 作者单位： | 四川大学电子信息学院光电系,成都,610064;四川大学电子信息学院光电系,成都,610064;四川大学电子信息学院光电系,成都,610064 |
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| 摘 要： | 用有限差分法计算了不同电极宽度下,电光晶体(LiNbO3)内部的电场分布情况,详细分析了电场不均匀性对晶体折射率和光束相位延迟的影响规律.发现选择合适的电极宽度,充分利用晶体中轴附近相对均匀的电场分布,可以避开复杂的边缘效应,同时能够降低畸变率,从而提高调制的精确性和稳定性.
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| 关 键 词： | 电光调制 LiNbO3晶体 相位延迟 电场分布 |
Effects of Electric Field Distribution in Electro-optical Crystal on Phase Modulation |
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| LIU Chungang,HU Jun,ZHANG Rongzhu. Effects of Electric Field Distribution in Electro-optical Crystal on Phase Modulation[J]. Semiconductor Optoelectronics, 2010, 31(5) |
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| Authors: | LIU Chungang HU Jun ZHANG Rongzhu |
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| Affiliation: | LIU Chungang,HU Jun,ZHANG Rongzhu (Department of Optical Science and Technology,Si chuan University,Chengdu 610064,CHN) |
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| Abstract: | In this paper,the electric-field distribution in LiNbO3 with different side electrodes is analyzed by finite difference method.The effects of non-uniformly electric-field distribution on refractive index of the crystal and phase delay of the output light through the LiNbO3crystal are studied in detail.It is concluded that selecting electrode with appropriate width and taking full advantage of the uniform electric field around the symmetric axis of the crystal will avoid some complicated fringe effects,furth... |
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| Keywords: | electro-optic modulation LiNbO3 phase delay electric-field distribution |
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