光学学报, 2005, 25 (1): 21, 网络出版: 2006-05-22
利用旋转波片组实现偏振变换器的两种新方法
Two Novel Methods for Polarization Transformer Using Rotatable Waveplates
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 optical fiber communication technology transformations of SOP quarterwave plate halfwave plate SOP projection plane
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
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
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): 21. 王军利, 方强, 王永昌, 阴亚芳, 刘毓. Two Novel Methods for Polarization Transformer Using Rotatable Waveplates[J]. Acta Optica Sinica, 2005, 25(1): 21.
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