Compact and high-performance vortex mode sorter for multi-dimensional multiplexed fiber communication systems

Yuanhui Wen, Ioannis Chremmos, Yujie Chen*, Guoxuan Zhu, Junwei Zhang, Jiangbo Zhu, Yanfeng Zhang, Jie Liu, Siyuan Yu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)
10 Downloads (Pure)

Abstract

With the amplitude, time, wavelength/frequency, phase, and polarization/spin parameter dimensions of the light wave/photon almost fully utilized in both classical and quantum photonic information systems, orbital angular momentum (OAM) carried by optical vortex modes is regarded as a new modal parameter dimension for further boosting the capacity and performance of the systems. To exploit the OAM mode space for such systems, stringent performance requirements on a pair of OAM mode multiplexer and demultiplexer (also known as mode sorters) must be met. In this work, we implement a newly discovered optical spiral transformation to achieve a low-cross-Talk, wide-opticalbandwidth, polarization-insensitive, compact, and robust OAM mode sorter that realizes the desired bidirectional conversion between seven co-Axial OAM modes carried by a ring-core fiber and seven linearly displaced Gaussian-like modes in parallel single-mode fiber channels. We further apply the device to successfully demonstrate high-spectralefficiency and high-capacity data transmission in a 50-km OAM fiber communication link for the first time, in which a multi-dimensional multiplexing scheme multiplexes eight orbital-spin vortex mode channels with each mode channel simultaneously carrying 10 wavelength-division multiplexing channels, demonstrating the promising potential of both the OAM mode sorter and the multi-dimensional multiplexed OAM fiber systems enabled by the device. Our results pave the way for futureOAM-based multi-dimensional communication systems.

Original languageEnglish
Pages (from-to)254-262
Number of pages9
JournalOptica
Volume7
Issue number3
Early online date20 Mar 2020
DOIs
Publication statusPublished - 20 Mar 2020
Externally publishedYes

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