Power-efficient ultra-broadband soliton microcombs in resonantly-coupled microresonators
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arXiv
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| Autores principales: | , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| author | Zhu, Kaixuan Luo, Xinrui Wang, Yuanlei Wang, Ze Xu, Tianyu Qian, Du Cheng, Yinke Wang, Junqi Luo, Haoyang Liu, Yanwu Jin, Xing Xie, Zhenyu Zhou, Xin Wang, Min Liu, Jian-Fei Cao, Xuening Wang, Ting Tang, Shui-Jing Gong, Qihuang Li, Bei-Bei Yang, Qi-Fan |
| author_facet | Zhu, Kaixuan Luo, Xinrui Wang, Yuanlei Wang, Ze Xu, Tianyu Qian, Du Cheng, Yinke Wang, Junqi Luo, Haoyang Liu, Yanwu Jin, Xing Xie, Zhenyu Zhou, Xin Wang, Min Liu, Jian-Fei Cao, Xuening Wang, Ting Tang, Shui-Jing Gong, Qihuang Li, Bei-Bei Yang, Qi-Fan |
| contents | The drive to miniaturize optical frequency combs for practical deployment has spotlighted microresonator solitons as a promising chip-scale candidate. However, these soliton microcombs could be very power-hungry when their span increases, especially with fine comb spacings. As a result, realizing an octave-spanning comb at microwave repetition rates for direct optical-microwave linkage is considered not possible for photonic integration due to the high power requirements. Here, we introduce the concept of resonant-coupling to soliton microcombs to reduce pump consumption significantly. Compared to conventional waveguide-coupled designs, we demonstrate (i) a threefold increase in spectral span for high-power combs and (ii) up to a tenfold reduction in repetition frequency for octave-spanning operation. This configuration is compatible with laser integration and yields reliable, turnkey soliton generation. By eliminating the long-standing pump-power bottleneck, microcombs will soon become readily available for portable optical clocks, massively parallel data links, and field-deployable spectrometers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_02022 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Power-efficient ultra-broadband soliton microcombs in resonantly-coupled microresonators Zhu, Kaixuan Luo, Xinrui Wang, Yuanlei Wang, Ze Xu, Tianyu Qian, Du Cheng, Yinke Wang, Junqi Luo, Haoyang Liu, Yanwu Jin, Xing Xie, Zhenyu Zhou, Xin Wang, Min Liu, Jian-Fei Cao, Xuening Wang, Ting Tang, Shui-Jing Gong, Qihuang Li, Bei-Bei Yang, Qi-Fan Optics The drive to miniaturize optical frequency combs for practical deployment has spotlighted microresonator solitons as a promising chip-scale candidate. However, these soliton microcombs could be very power-hungry when their span increases, especially with fine comb spacings. As a result, realizing an octave-spanning comb at microwave repetition rates for direct optical-microwave linkage is considered not possible for photonic integration due to the high power requirements. Here, we introduce the concept of resonant-coupling to soliton microcombs to reduce pump consumption significantly. Compared to conventional waveguide-coupled designs, we demonstrate (i) a threefold increase in spectral span for high-power combs and (ii) up to a tenfold reduction in repetition frequency for octave-spanning operation. This configuration is compatible with laser integration and yields reliable, turnkey soliton generation. By eliminating the long-standing pump-power bottleneck, microcombs will soon become readily available for portable optical clocks, massively parallel data links, and field-deployable spectrometers. |
| title | Power-efficient ultra-broadband soliton microcombs in resonantly-coupled microresonators |
| topic | Optics |
| url | https://arxiv.org/abs/2503.02022 |