Author:
Liu Yuanpeng,Geng Wenpu,Zhao Wenqian,Pan Zhongqi,Yue Yang
Abstract
The OAM mode purity in the annular-core optical fiber with different graded-high-index profiles is investigated. Up to 11.83% and 13.07% purity improvement for the OAM1,1 mode can be achieved by adopting a graded-index profile.