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arXiv · 1904.10240

On-chip broadband plasmon-induced transparency based on plasmonic metal-insulator-metal waveguides

Zhaojian Zhang·Junbo Yang·Siyu Xu·Heng Xu·Yunxin Han·Xin He·Jingjing Zhang·Jie Huang·Dingbo Chen
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Abstract

As an analogue of electromagnetically induced transparency (EIT), plasmon-induced transparency (PIT) has been realized both in plasmonic metamaterial and waveguide structures. Via near-field coupling within unit cells, PIT with broadband could be produced by plasmonic metamaterials, which, however, has not been realized in on-chip plasmonic waveguide structures. Here, we introduce broadband PIT based on a plasmonic metal-insulator-metal (MIM) waveguide system. Utilizing the direct coupling structure, PIT emerges based on an easy-fabricated structure without gap. By tuning coupling distance, the transparent window can be continuously tuned from narrow- to broadband. Such device is promising for on-chip applications on sensing, filtering and slow light over a broad frequency range.

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Zhaojian Zhang, Junbo Yang, Siyu Xu, Heng Xu, Yunxin Han, Xin He, Jingjing Zhang, Jie Huang, Dingbo Chen. 2019-04-23. On-chip broadband plasmon-induced transparency based on plasmonic metal-insulator-metal waveguides. https://arxiv.org/abs/1904.10240

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