• Photonics Research
  • Vol. 12, Issue 8, 1802 (2024)
Zhiwei Guan1, Chaofeng Wang2, Chuangxin Xie1, Haisheng Wu1..., Junmin Liu3, Huapeng Ye4,6, Dianyuan Fan1, Jiangnan Xiao5,7 and Shuqing Chen1,*|Show fewer author(s)
Author Affiliations
  • 1International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
  • 2College of Physics and Engineering Technology, Minzu Normal University of Xingyi, Xingyi 562400, China
  • 3College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
  • 4Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
  • 5Terahertz Technology Innovation Research Institute, Shanghai Key Laboratory of Modern Optical System, Terahertz Science Cooperative Innovation Center, School of Optical-Electrical Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
  • 6e-mail: yehp@m.scnu.edu.cn
  • 7e-mail: jiangnanxiao@usst.edu.cn
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    DOI: 10.1364/PRJ.517503 Cite this Article Set citation alerts
    Zhiwei Guan, Chaofeng Wang, Chuangxin Xie, Haisheng Wu, Junmin Liu, Huapeng Ye, Dianyuan Fan, Jiangnan Xiao, Shuqing Chen, "Photonic crystal-connected bidirectional micro-ring resonator array for duplex mode and wavelength channel (de)multiplexing," Photonics Res. 12, 1802 (2024) Copy Citation Text show less

    Abstract

    The progress of on-chip optical communication relies on integrated multi-dimensional mode (de)multiplexers to enhance communication capacity and establish comprehensive networks. However, existing multi-dimensional (de)multiplexers, involving modes and wavelengths, face limitations due to their reliance on single-directional total internal reflection and multi-level mode conversion based on directional coupling principles. These constraints restrict their potential for full-duplex functionality and highly integrated communication. We solve these problems by introducing a photonic-like crystal-connected bidirectional micro-ring resonator array (PBMRA) and apply it to duplex mode-wavelength multiplexing communication. The directional independence of total internal reflection and the cumulative effect of the subwavelength-scale pillar within the single-level photonic crystal enable bidirectional mode and wavelength multiplexed signals to transmit among multi-pair nodes without interference, improving on-chip integration in single-level mode conversion. As a proof of concept, we fabricated a nine-channel bidirectional multi-dimensional (de)multiplexer, featuring three wavelengths and three TE modes, compactly housed within a footprint of 80μm×80μm, which efficiently transmits QPSK-OFDM signals at a rate of 216 Gbit/s, achieving a bit error rate lower than 10-4. Leveraging the co-ring transmission characteristic and the orthogonality of the mode-wavelength channel, this (de)multiplexer also enables a doubling of communication capacity using two physical transmission channels.
    neff(λ)×2πλ×(2πR+2L)=2mπ,

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    Δ=n12n022n12.(A1)

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    κ=2Δa(kxa)2(γxa)2(1+γxa)ν3exp[γx(D2a)],(A2)

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    {kxa=(p1)π2+arctan(n12γxn02kx)γx2=k2(n12n02)kx2,(A3)

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    Fobject=(TiiTij),(B1)

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    Zhiwei Guan, Chaofeng Wang, Chuangxin Xie, Haisheng Wu, Junmin Liu, Huapeng Ye, Dianyuan Fan, Jiangnan Xiao, Shuqing Chen, "Photonic crystal-connected bidirectional micro-ring resonator array for duplex mode and wavelength channel (de)multiplexing," Photonics Res. 12, 1802 (2024)
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