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| Hauptverfasser: | , , , , , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2026
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| Online-Zugang: | https://arxiv.org/abs/2603.05148 |
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| _version_ | 1866908868414537728 |
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| author | Sun, Guanqun Zheng, Zhekai Guo, Jiacheng Qi, Wenjun Zhang, Hao He, Jijun Zhang, Fangzheng Wang, Yiping Pan, Shilong |
| author_facet | Sun, Guanqun Zheng, Zhekai Guo, Jiacheng Qi, Wenjun Zhang, Hao He, Jijun Zhang, Fangzheng Wang, Yiping Pan, Shilong |
| contents | Microwave sensing is a critical enabler for all-weather perception, yet its resolution is fundamentally capped by the diffraction limit of the physical antenna aperture. While vortex electromagnetic (EM) waves offer a route to bypass this barrier, practical deployment is constrained by the trade-off between bandwidth, mode purity, and hardware complexity. Here, we propose a microwave photonic architecture enabled by a chip-scale dissipative Kerr soliton (DKS) microcomb that resolves these constraints. The microcomb provides a grid of over 270 optical lines with linewidths below 30 kHz, which are modulated and optically processed to synthesize vortex waves covering 8 GHz (18-26 GHz) with 15 programmable orbital angular momentum (OAM) modes. In contrast to conventional parallel-laser systems, our approach reduces phase error and improves OAM mode purity, while condensing the multi-wavelength source onto a monolithic chip. We demonstrate superior forward-looking imaging performance, clearly resolving both point targets and complex scenes. This work establishes a scalable framework bridging integrated soliton physics with broadband microwave processing, paving the way for next-generation compact smart sensors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_05148 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Integrated Microcomb-Driven Vortex Electromagnetic Waves for Broadband Forward-looking Sensing Sun, Guanqun Zheng, Zhekai Guo, Jiacheng Qi, Wenjun Zhang, Hao He, Jijun Zhang, Fangzheng Wang, Yiping Pan, Shilong Optics Microwave sensing is a critical enabler for all-weather perception, yet its resolution is fundamentally capped by the diffraction limit of the physical antenna aperture. While vortex electromagnetic (EM) waves offer a route to bypass this barrier, practical deployment is constrained by the trade-off between bandwidth, mode purity, and hardware complexity. Here, we propose a microwave photonic architecture enabled by a chip-scale dissipative Kerr soliton (DKS) microcomb that resolves these constraints. The microcomb provides a grid of over 270 optical lines with linewidths below 30 kHz, which are modulated and optically processed to synthesize vortex waves covering 8 GHz (18-26 GHz) with 15 programmable orbital angular momentum (OAM) modes. In contrast to conventional parallel-laser systems, our approach reduces phase error and improves OAM mode purity, while condensing the multi-wavelength source onto a monolithic chip. We demonstrate superior forward-looking imaging performance, clearly resolving both point targets and complex scenes. This work establishes a scalable framework bridging integrated soliton physics with broadband microwave processing, paving the way for next-generation compact smart sensors. |
| title | Integrated Microcomb-Driven Vortex Electromagnetic Waves for Broadband Forward-looking Sensing |
| topic | Optics |
| url | https://arxiv.org/abs/2603.05148 |