| 利用旋转波片组实现偏振变换器的两种新方法 |
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| 引用本文： | 王军利,方强,王永昌,阴亚芳,刘毓.利用旋转波片组实现偏振变换器的两种新方法[J].光学学报,2005,25(1):1-26. |
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| 作者姓名： | 王军利 方强 王永昌 阴亚芳 刘毓 |
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| 作者单位： | 西安交通大学现代物理研究所,西安,710049;西安邮电学院电信系,西安,710061 |
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| 基金项目： | “十五”科技攻关项目“40 Gb/s SDH (STM 256)光纤通信设备与系统”资助课题。 |
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| 摘 要： | 偏振变换器作为一种重要的光学器件．以其高偏振变换精度、低成本、低插入损耗以及控制算法简单的特性在相干光纤通信和高速光纤通信领域具有十分重要的地位。提出了利用两个λ／4波片和一个λ／2波片的三波片组合实现任意偏振态变换的新方法。用改进的三维庞加莱球方法—偏振态投射平面的二维几何方法分别推导出了λ／4 λ／4 λ／2组合以及λ／2 λ／4 λ／4组合实现任意偏振态变换时每个波片的位置参量计算公式。研究结果表明：两个λ／4波片和一个λ／2波片的任意组合都可以实现任意偏振态的变换；用偏振态投射平面的几何方法处理偏振变换的相关问题比庞加莱球方法和矩阵处理方法简洁明了。研究结果为偏振变换器的设计提供了理论依据。
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| 关 键 词： | 光纤通信技术 偏振态变换 λ/4波片 λ/2波片 偏振态投射平面 |
| 收稿时间： | 2004/3/18 |
Two Novel Methods for Polarization Transformer Using Rotatable Waveplates |
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| Wang Junli,Fang Qiang,Wang Yongchang,Yin Yafang,Liu Yu.Two Novel Methods for Polarization Transformer Using Rotatable Waveplates[J].Acta Optica Sinica,2005,25(1):1-26. |
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| Authors: | Wang Junli Fang Qiang Wang Yongchang Yin Yafang Liu Yu |
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| Affiliation: | Wang Junli1 Fang Qiang2 Wang Yongchang1 Yin Yafang2 Liu Yu2 1 Institute of Modern Physics,Xi'an Jiaotong University,Xi'an 710049 2 Department of Telecommunications,Xi'an Institute of Posts and Telecommunications,Xi'an 710061 |
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| Abstract: | High accurate state of polarization (SOP) converting, low cost, low insert loss, and simple control algorithms are vital for polarization transformers. A novel method of polarization transformations using two quarter wave plates (QWP) and a half wave plate (HWP) realizing transformation between arbitrary states of polarization (SOP) is presented in this work. A new geometry method, SOP projection plane, is developed from Poincaré sphere method. The expressions of azimuths of three wave plates are derived through SOP projection plane method in Stokes space. The experimental results show that |
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| Keywords: | optical fiber communication technology transformations of SOP quarter-wave plate half-wave plate SOP projection plane |
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