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  • Received: Apr. 9, 2020

    Accepted: May. 26, 2020

    Posted: May. 26, 2020

    Published Online: Jun. 30, 2020

    The Author Email: Jie Liu (liujie47@mail.sysu.edu.cn)

    DOI: 10.1364/PRJ.394864

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    Junwei Zhang, Junyi Liu, Lei Shen, Lei Zhang, Jie Luo, Jie Liu, Siyuan Yu. Mode-division multiplexed transmission of wavelength-division multiplexing signals over a 100-km single-span orbital angular momentum fiber[J]. Photonics Research, 2020, 8(7): 07001236

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Photonics Research, Vol. 8, Issue 7, 07001236 (2020)

Mode-division multiplexed transmission of wavelength-division multiplexing signals over a 100-km single-span orbital angular momentum fiber 

Junwei Zhang1, Junyi Liu1, Lei Shen2, Lei Zhang2, Jie Luo2, Jie Liu1,*, and Siyuan Yu1,3,4

Author Affiliations

  • 1State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510006, China
  • 2State Key Laboratory of Optical Fiber and Cable Manufacture Technology, Yangtze Optical Fiber and Cable Joint Stock Limited Company, Wuhan 430073, China
  • 3Photonics Group, Merchant Venturers School of Engineering, University of Bristol, Bristol BS8 1UB, UK
  • 4e-mail: s.yu@bristol.ac.uk

Abstract

We experimentally demonstrate mode-division multiplexed (MDM) transmission using eight orbital angular momentum (OAM) modes over a single span of 100-km low-attenuation and low-crosstalk ring-core fiber (RCF). Each OAM mode channel carries 10 wavelength-division multiplexing (WDM) signal channels in the C band, with each WDM channel in turn transmitting 16-GBaud quadrature phase-shift keying signal. An aggregate capacity of 2.56 Tbit/s and an overall spectral efficiency of 10.24 bit/(s · Hz) are realized. The capacity-distance product of 256 (Tbit/s) · km is the largest reported so far for OAM fiber communications systems to the best of our knowledge. Exploiting the low crosstalk between the OAM mode groups in the RCF, the scheme only requires the use of modular 4×4 multiple-input multiple-output processing, and it can therefore be scaled up in the number of MDM channels without increasing the complexity of signal processing.

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