Low-loss 25.3km few-mode ring-core fiber for mode-division multiplexed transmission

Jung, Yongmin
Kang, Qiongyue
Zhou, Hongyan
Zhang, Rui
Chen, Su
Wang, Honghai
Yang, Yucheng
Jin, Xianqing
Payne, Frank P.
Alam, Shaif-ul
Richardson, David

Publication date

April 2017

DOI

10.1109/JLT.2017.2658343

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Abstract

We report the design, fabrication and characterization of a few-mode ring-core fiber supporting 4 mode groups (i.e. 7 spatial modes including spatial degeneracies). By carefully designing the ring-core parameters, the fiber can support only single-radial-order modes, which enables weak intermodal coupling between higher-order modes and has potential to reduce the complexity of mode-division multiplexed digital signal processing. The low loss (~ 0.3dB/km) and long length (25.3km) RCF is successfully fabricated and they are both records for a ring-core fiber