Abstract
We review recent progress in spectrally efficient optical communications using orbital angular momentum (OAM) multiplexing. By delivering multi-carrier multi-level modulation signals (OFDM/OQAM 64-QAM) over polarization multiplexed 22 OAM modes, we demonstrate a free-space transmission link with an ultra-high spectral efficiency of 230 bit/s/Hz.
© 2014 Optical Society of America
PDF ArticleMore Like This
Jian Wang, Shuhui Li, Chao Li, Long Zhu, Chengcheng Gui, Dequan Xie, Ying Qiu, Qi Yang, and Shaohua Yu
W1H.4 Optical Fiber Communication Conference (OFC) 2014
Jian Wang and Alan E. Willner
W4J.5 Optical Fiber Communication Conference (OFC) 2014
Jian Wang, Jun Liu, Shuhui Li, Long Zhu, Chao Li, Ming Luo, Qi Yang, and Shaohua Yu
M2F.5 Optical Fiber Communication Conference (OFC) 2015