In this article, a novel spider web shaped circular photonic crystal fiber (PCF) is proposed and analyzed. It can support more orbital angular momentum (OAM) modes up to 26. This PCF also operates at 1000 nm bandwidth ranging from 800 to 1800 nm. The proposed PCF provides a design strategy for better OAM quality by using the finite element method (FEM). It also includes seven OAM parameters with a better requirement of PCF. In addition, relatively lower confinement loss (less than $$10^{ - 8}$$ 10 - 8 dB/m) is obtained for maximum eigenmodes. The most of OAM modes are shown smooth dispersion profile. Besides, the nonlinear coefficient is comparatively low, maximum modes are shown nonlinear coefficient around 2 to 3 W −1 km −1 at 1.55 μm. This novel structure is a strong candidate for robust, secure, high speed, and high-capacity transmission. It can be also used in mode division multiplexing, long haul communication and sensing.

中文翻译：

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用于具有支持轨道角动量传输特性的稳健模式传输应用的新型蜘蛛网光子晶体光纤

在本文中，提出并分析了一种新型蜘蛛网状圆形光子晶体光纤 (PCF)。它可以支持多达 26 个轨道角动量 (OAM) 模式。该 PCF 还可以在 800 到 1800 nm 的 1000 nm 带宽下运行。所提出的 PCF 通过使用有限元方法 (FEM) 为更好的 OAM 质量提供了设计策略。它还包括七个对 PCF 要求更高的 OAM 参数。此外，对于最大本征模式获得了相对较低的限制损耗（小于 $10^{ - 8}$$ 10 - 8 dB/m）。大多数 OAM 模式显示出平滑的色散曲线。此外，非线性系数相对较低，最大模式在1.55μm处显示约2至3 W -1 km -1 的非线性系数。这种新颖的结构是稳健、安全、高速和大容量传输的有力候选者。