All-fiber orbital angular momentum mode multiplexer based on a mode-selective photonic lantern and a mode polarization controller

作者：Zeng, Xinglin; Li, Yan^*; Feng, Lipeng; Wu, Sihan; Yang, Chen; Li, Wei; Tong, Weijun; Wu, Jian

来源：Optics Letters, 2018, 43(19): 4779-4782.

DOI：10.1364/OL.43.004779

We demonstrate for the first time, to the best of our knowledge, an all-fiber orbital angular momentum (OAM) multiplexer that multiplexes both OAM modes of -l and +l up to the second order by using a mode-selective photonic lantern and a mode polarization controller. The experimentally obtained mode profiles are close to the theoretical results, and the mode purities are higher than 89% for all the OAM modes at 1550 nm. The losses for all mode generations are less than 3.8 dB in the C-band.

• 出版日期2018-10-1
• 单位北京邮电大学