Single-mode, low loss hollow-core anti-resonant fiber designs
Single-mode, low loss hollow-core anti-resonant fiber designs
复制标题
DOI：
10.1364/oe.27.003824
复制
发表时间：
2019-02-18
期刊：
影响因子：
3.8
通讯作者：
Amezcua-Correa, Rodrigo
中科院分区：
文献类型：
--
作者：
Habib, Md. Selim;Antonio-Lopez, J. E.;Amezcua-Correa, Rodrigo
在本文中，我们对各种空心抗谐振（HCAR）光纤进行了数值研究，以实现低传播和弯曲损耗，并在电信窗口中有效地单模运行。我们证明了传播损耗和高阶模式模态含量如何受到几何结构和反谐振包层管数量的强烈影响。我们发现，与 6 个或更多反谐振管的设计相比，5 管嵌套 HC-AR 光纤具有更宽的反谐振频带、更低的损耗和更大的高阶模消光比。在5管嵌套HC-AR光纤中，高阶模与基模之间的损耗比高达12,000。据我们所知，这是 1.55 μm 空心光纤中所展示的最大高阶模消光比。此外，我们提出了一种改进的 5 管嵌套 HC-AR 光纤，其在 1330 至 1660 nm 范围内的传播损耗低于 1 dB/km。对于 1 厘米的弯曲半径，该光纤还具有类似于 15 dB/km 的小弯曲损耗。 (C) 2019 年美国光学学会根据 OSA 开放获取出版协议条款
In this paper, we numerically investigate various hollow-core anti-resonant (HCAR) fibers towards low propagation and bend loss with effectively single-mode operation in the telecommunications window. We demonstrate how the propagation loss and higher-order mode modal contents are strongly influenced by the geometrical structure and the number of the anti-resonant cladding tubes. We found that 5-tube nested HC-AR fiber has a wider anti-resonant band, lower loss, and larger higher-order mode extinction ratio than designs with 6 or more anti-resonant tubes. A loss ratio between the higher-order modes and fundamental mode, as high as 12,000, is obtained in a 5-tube nested HC-AR fiber. To the best of our knowledge, this is the largest higher-order mode extinction ratio demonstrated in a hollow-core fiber at 1.55 mu m. In addition, we propose a modified 5-tube nested HC-AR fiber, with propagation loss below 1 dB/km from 1330 to 1660 nm. This fiber also has a small bend loss of similar to 15 dB/km fora bend radius of 1 cm. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement