Photonic Supercoupling in Silicon Topological Waveguides
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Acceso en línea: | |
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| _version_ | 1866910302742773760 |
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| author | Jia, Ridong Tan, Yi Ji Navaratna, Nikhil Kumar, Abhishek Singh, Ranjan |
| author_facet | Jia, Ridong Tan, Yi Ji Navaratna, Nikhil Kumar, Abhishek Singh, Ranjan |
| contents | Electromagnetic wave coupling between photonic systems relies on the evanescent field typically confined within a single wavelength. Extending evanescent coupling distance requires low refractive index contrast and perfect momentum matching for achieving a large coupling ratio. Here, we report the discovery of photonic supercoupling in a topological valley Hall pair of waveguides, showing a substantial improvement in coupling efficiency across multiple wavelengths. Experimentally, we realize ultra-high coupling ratios between waveguides through valley-conserved vortex flow of electromagnetic energy, attaining 95% coupling efficiency for separations of up to three wavelengths. This demonstration of photonic supercoupling in topological systems significantly extends the coupling distance between on-chip waveguides and components, paving the path for the development of supercoupled photonic integrated devices, optical sensing, and telecommunications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_10508 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Photonic Supercoupling in Silicon Topological Waveguides Jia, Ridong Tan, Yi Ji Navaratna, Nikhil Kumar, Abhishek Singh, Ranjan Optics Mesoscale and Nanoscale Physics Materials Science Applied Physics Quantum Physics Electromagnetic wave coupling between photonic systems relies on the evanescent field typically confined within a single wavelength. Extending evanescent coupling distance requires low refractive index contrast and perfect momentum matching for achieving a large coupling ratio. Here, we report the discovery of photonic supercoupling in a topological valley Hall pair of waveguides, showing a substantial improvement in coupling efficiency across multiple wavelengths. Experimentally, we realize ultra-high coupling ratios between waveguides through valley-conserved vortex flow of electromagnetic energy, attaining 95% coupling efficiency for separations of up to three wavelengths. This demonstration of photonic supercoupling in topological systems significantly extends the coupling distance between on-chip waveguides and components, paving the path for the development of supercoupled photonic integrated devices, optical sensing, and telecommunications. |
| title | Photonic Supercoupling in Silicon Topological Waveguides |
| topic | Optics Mesoscale and Nanoscale Physics Materials Science Applied Physics Quantum Physics |
| url | https://arxiv.org/abs/2401.10508 |