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

Wen, Yuanhui, Chremmos, Ioannis, Chen, Yujie, Zhu, Guoxuan, Zhang, Junwei, Zhu, Jiangbo, Zhang, Yanfeng, Liu, Jie and Yu, Siyuan (2020) Compact and high-performance vortex mode sorter for multi-dimensional multiplexed fiber communication systems. Optica, 7 (3). p. 254. ISSN 2334-2536

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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.

Item Type: Article
Additional Information: © 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Subjects: F300 Physics
F900 Others in Physical Sciences
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Rachel Branson
Date Deposited: 01 Jun 2020 13:18
Last Modified: 31 Jul 2021 13:49

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