Author Affiliations
Abstract
Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200072, China
A fiber structure with a circularly polarizing property is proposed. The fiber consists of a round core and a triple-lobe stress region in the cladding, which is compatible with single-mode fibers, and it can be fabricated using conventional metal chemical vapor deposition processes. By coating a layer with a high-refractive index, the twist pitch required for resonant coupling is increased to hundreds of micrometers, and the mature pit-in-jacket drawing technique can be used. The polarization filtering properties of the fabricated circularly polarizing fibers are measured experimentally, showing high distinction ratios in a broad frequency region.
060.2280 Fiber design and fabrication 050.2770 Gratings Chinese Optics Letters
2016, 14(11): 110606
针对变转速旋转双折射光纤偏振转换器件的具体结构,采用相位延迟片模型和琼斯算法,逐点计算了光纤中光学偏振态的琼斯矢量。首次考虑了光纤器件内部各点的相位因子对传输光偏振态演化的影响,不仅计算了偏振消光比在光纤内部各点的变化曲线,而且也计算了偏振方位角沿光纤内部各点的变化图像,完整全面地给出了线偏振光自慢转端向快转端转变为圆偏振光和圆偏振光自快转端向慢转端转变为线偏振光的演化历程。深入讨论了相位因子对偏振转换性能的影响,为偏振转换光纤器件的设计和检测提供了进一步的参考依据。
双折射光纤 偏振转换 琼斯矢量
介绍了小型拉丝机气体加热的原理,并设计了保证稳定拉丝的气炉结构形式,另外,在加热炉的气流控制及燃烧温度方面也做了实验研究.从而有利于使用小型气体拉丝机研制出供研究和实际应用的各种光纤.
拉丝机 气体加热炉 光纤 drawing tower gas furnace optical fiber
