Abstract
Since few-mode fibers (FMFs) have great potential as the new transmission media for optical communications, the ability to distinguish different fiber modes is essential. Most of the traditional schemes do not yield phase information, or are limited by beam size and mechanical requirements. Here, a method is presented to analyze the mode distribution of FMFs. The fiber modes are mapped to different frequencies by using dynamic spatial phase masks. The complex amplitudes at these frequencies indicate the amplitudes and phases of the fiber modes. The method can extract not only the amplitude distribution, but also the phase distribution of the fiber modes, and no other assisted light is needed.
© 2018 Optical Society of America
Full Article | PDF ArticleMore Like This
Long Zhu, Andong Wang, Shi Chen, Jun Liu, and Jian Wang
Opt. Lett. 43(8) 1894-1897 (2018)
Varun Kelkar, Smaranika Swain, and Deepa Venkitesh
Opt. Lett. 43(9) 2165-2168 (2018)
Liang Cui, Xiaodong Liu, Cheng Guo, Zhenzhen Zhang, Ningbo Zhao, Michael Vasilyev, and Xiaoying Li
Opt. Lett. 44(23) 5768-5771 (2019)