激光与光电子学进展, 2019, 56 (2): 020601, 网络出版: 2019-08-01   

高阶轨道角动量模场传输光纤的设计研究 下载: 1022次

Design and Analysis of a Transmission Fiber with High-Order Orbital Angular Momentum Mode
作者单位
西安理工大学自动化与信息工程学院, 陕西 西安 710048
摘要
针对纤芯折射率分布为倒抛物线型的光纤结构,在光纤的纤芯与包层之间增加低折射率层,构成了改进的新型光纤。该光纤可容纳高阶轨道角动量(OAM)模场,通过归一化截止频率的计算得到光纤可支持9种模式,最高可容纳拓扑荷数为3的OAM模式。计算得到简并模式LP11与LP21的有效折射率差均可达到2.1×10 -4,简并模式LP31之间有效折射率差可达到10 -3,能够有效地使矢量模式简并分离,对越高阶的模式简并分离效果越好。最后分析了此光纤结构低折射率层的分布对于光纤可容纳涡旋光束模式数目的影响。
Abstract
For a fiber having an inverted parabolic distribution as its refractive index distribution, adding a low refractive index layer between the core and the fiber cladding can create an improved novel fiber. This novel fiber can accommodate a high-order orbital angular momentum (OAM) mode field. Calculation of the normalized cutoff frequency showed that the novel fiber can support 9 fiber modes and accommodate the OAM modes with a topological charge of 3. According to the calculations, the effective refractive index differences for the degenerate modes of LP11 and LP21 both reach 2.1×10 -4, and the effective refractive index difference between the degenerate modes of LP31 reaches 10 -3. The vector modes were effectively decoupled and the degenerative separation effect of the higher order modes was improved. Finally, the influence of the low refractive index layer's distribution on the optical fiber transmittable vortex light mode was analyzed.

柯熙政, 陈云, 张颖. 高阶轨道角动量模场传输光纤的设计研究[J]. 激光与光电子学进展, 2019, 56(2): 020601. Xizheng Ke, Yun Chen, Ying Zhang. Design and Analysis of a Transmission Fiber with High-Order Orbital Angular Momentum Mode[J]. Laser & Optoelectronics Progress, 2019, 56(2): 020601.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!