| 扭转单模光纤偏振态调制的实验研究 |
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| 引用本文： | 吴志鹤,朱俊,金正升.扭转单模光纤偏振态调制的实验研究[J].南京航空航天大学学报,1992(2). |
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| 作者姓名： | 吴志鹤 朱俊 金正升 |
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| 作者单位： | 南京航空学院测试工程系
(吴志鹤，朱俊)，南京航空学院测试工程系(金正升) |
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| 摘 要： | 在理想的单模光纤中,HE_(11)~z模和HE_(11)~y模简并,传播常数相等,各自独立传播。光纤受外场扰动将使两模式失简并,相互产生耦合,使光波的偏振态发生变化。本文应用模耦合理论和弹光方程,建立单模光纤中偏振态与扭转扰动之间的关系,并且进行了实验研究。实验结果与理论分析基本相符。 实验研究表明,利用单模光纤偏振态的调制特性,设计出一种新的光纤扭转角传感器是有可能实现的。
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| 关 键 词： | 单模光导纤维 偏振调制 扭转 模耦合 实验研究 |
Experimental Studies on Polarization Modification in Twisted Single-Mode Optical Fibers |
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| Wu Zhihe Zhu Jun Jin Zhengsheng.Experimental Studies on Polarization Modification in Twisted Single-Mode Optical Fibers[J].Journal of Nanjing University of Aeronautics & Astronautics,1992(2). |
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| Authors: | Wu Zhihe Zhu Jun Jin Zhengsheng |
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| Institution: | Department of Measurement Engineering |
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| Abstract: | In an ideal single-mode fiber,the modes HE11x and HE11y are degenerated. They propagate individually in identical phase velocities. When an external stress is applied to the fiber ,the degeneracy arises which results in the change of polarization of the optical wave. In this paper, the coupled-mode theory and elasto-optical equations are used to set up the relationship between the polarization and the fiber-twisting disturbance in single-mode fibers. More light has been put on experimental studies. The experimental results are in good agreement with the theoretical ones.Based on the results of the experimental studies,it is possible to design a new type of single-mode and twisted-angle fiber sensor working on the relationship we have set up above. |
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| Keywords: | single mode optical fibre polarization modulation twist coupled-mode experimental studies |
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