A novel three-ring-core few-mode fiber with large effective area and low nonlinear coefficient

作者：Yu, Ru yuan; Zheng, Hong jun^*; Li, Xin; Bai, Cheng lin; Hu, Wei sheng

来源：Optoelectronics Letters, 2018, 14(1): 30-35.

DOI：10.1007/s11801-018-7200-4

• Differential mode
• Fiber characteristics
• Full vector finite element methods
• Input wavelength
• Large effective areas
• Large wavelength range
• Nonlinear coefficient
• Perfect matched layers

A novel three-ring-core few-mode fiber with large effective area and low nonlinear coefficient is proposed in this paper. The fiber characteristics based on the full-vector finite element method (FEM) with perfect matched layer boundary conditions show that four supermodes with large effective area, low nonlinear coefficient and low differential mode group delay (DMGD) are achieved. With the increase of input wavelength, the effective areas of three-ring-core few-mode fiber are increased, and the nonlinear coefficients are decreased. The bending losses are increased with the increase of input wavelength, and are decreased with the increase of bending radius. Moreover, the proposed fiber performs a nonlinear coefficient and DMGD flattened profile at a large wavelength range.

• 出版日期2018
• 单位上海交通大学; 区域光纤通信网与新型光纤通信系统国家重点实验室