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In-line polarization rotator based on the quantum-optical analogy

机译：基于量子光学类比的在线偏振旋转器

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摘要

An in-line polarization rotator (PR) is proposed based on the quantum-optical analogy (QOA). The proposed PR possesses an auxiliary E7 liquid crystal (LC) waveguide in the vicinity of the single-mode fiber (SMF) core. Because of the matched core size, the PR demonstrates good compatibility with the established backbone networks which are composed of conventional SMFs. With optimized parameters for the auxiliary waveguide, the PR offers a near 100% polarization conversion efficiency at the 1550 nm band with a bandwidth of similar to 30 nm, a length of similar to 4625.9 mu m with a large tolerance of similar to 550 mu m, and a tolerance of the input light polarization angle and rotation angle of the E7 LC of similar to pi/30 and similar to pi/36 rad, respectively. The performance was verified by the full-vector finite-element method. The proposed PR can be easily fabricated based on the existing photonics crystal fiber manufacturing process, making it a potentially inexpensive device for applications in modern communication systems. Moreover, the QOA, compared with the previous supermode-theory design method, allows a designer to consider several waveguides separately. Therefore, various unique characteristics can be met simultaneously which is consistent with the trend of modern fiber design. (C) 2016 Optical Society of America
机译：基于量子光学类比（QOA），提出了一种在线偏振旋转器（PR）。拟议的PR在单模光纤（SMF）芯附近具有辅助E7液晶（LC）波导。由于核心大小匹配，因此PR与已建立的由常规SMF组成的骨干网表现出良好的兼容性。借助优化的辅助波导参数，PR在1550 nm波段提供接近100％的偏振转换效率，带宽类似于30 nm，长度类似于4625.9μm，大容差类似于550μm ，并且E7 LC的输入光偏振角和旋转角的公差分别类似于pi / 30和pi / 36 rad。通过全矢量有限元方法验证了该性能。可以根据现有的光子晶体光纤制造工艺轻松制造所提出的PR，使其成为用于现代通信系统中的潜在廉价器件。此外，与以前的超模理论设计方法相比，QOA使设计人员可以分别考虑多个波导。因此，可以同时满足各种独特的特性，这与现代光纤设计的趋势是一致的。 （C）2016美国眼镜学会

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