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Spoof surface plasmon polaritons (SSPPs) feature significant design freedoms in dispersion manipulation. A designed Plasmonic Dual-Mode Cell (PDMC) has its two modes orthogonal, with dispersion curves coincident. The Mode Coexistence Transmission Line (MCTL) is composed of several PDMCs and the simulation results show that the insertion loss is less than 3.2 dB and the signal isolation surpasses 16.7 dB in the frequency band over 60GHz. Theoretically, the MCTL enables doubled spectrum utilization. The complete structure is compressed to electrical dimensions of 0.125* 0.011* 0.017 λ3, efficiently increasing the channel capacity per unit area.

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Exploiting Mode Orthogonality in Spoof Surface Plasmon Polariton Structure for On-Chip Co-frequency Dual Mode Transmission

  • 会议论文

  • 发表日期：

    2026年

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  • Kai Lu,
  • Yiwei Lu,
  • Di Bao

摘要

Spoof surface plasmon polaritons (SSPPs) feature significant design freedoms in dispersion manipulation. A designed Plasmonic Dual-Mode Cell (PDMC) has its two modes orthogonal, with dispersion curves coincident. The Mode Coexistence Transmission Line (MCTL) is composed of several PDMCs and the simulation results show that the insertion loss is less than 3.2 dB and the signal isolation surpasses 16.7 dB in the frequency band over 60GHz. Theoretically, the MCTL enables doubled spectrum utilization. The complete structure is compressed to electrical dimensions of 0.125* 0.011* 0.017 λ3, efficiently increasing the channel capacity per unit area.