On-chip multi-timescale spatiotemporal optical synchronization
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arXiv
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| Autori principali: | , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866911162752303104 |
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| author | Xu, Lida Mehrabad, Mahmoud Jalali Flower, Christopher J. Moille, Gregory Restelli, Alessandro Suarez-Forero, Daniel G. Chembo, Yanne Mittal, Sunil Srinivasan, Kartik Hafezi, Mohammad |
| author_facet | Xu, Lida Mehrabad, Mahmoud Jalali Flower, Christopher J. Moille, Gregory Restelli, Alessandro Suarez-Forero, Daniel G. Chembo, Yanne Mittal, Sunil Srinivasan, Kartik Hafezi, Mohammad |
| contents | Mode-locking mechanisms are key resources in nonlinear optical phenomena, such as micro-ring solitonic states, and have transformed metrology, precision spectroscopy, and optical communication. However, despite significant efforts, mode-locking has not been demonstrated in the independently tunable multi-timescale regime. Here, we vastly expand the nonlinear mode-locking toolbox into multi-timescale synchronization on a chip. We use topological photonics to engineer a 2D lattice of hundreds of coupled silicon nitride ring resonators capable of hosting nested mode-locked states with a fast (near 1 THz) single-ring and a slow (near 3 GHz) topological super-ring timescales. We demonstrate signatures of multi-timescale mode-locking including quadratic distribution of the pump noise with the two-time azimuthal mode dimensions, as expected by mode-locking theory. Our observations are further corroborated by direct signatures of the near-transform-limit repetition beats and the formation of the temporal pattern on the slow timescale. Moreover, we show that these exotic properties of edge-confined mode-locked states are in sharp contrast to bulk and single-ring counterparts and establish a clear pathway for their identification. Our unprecedented demonstration of mode-locking in topological combs unlocks the implementation of lattice-scale synchronization and independently tunable multi-timescale mode-locking phenomena, also the exploration of the fundamental nonlinearity-topology interplay on a chip. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_15671 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On-chip multi-timescale spatiotemporal optical synchronization Xu, Lida Mehrabad, Mahmoud Jalali Flower, Christopher J. Moille, Gregory Restelli, Alessandro Suarez-Forero, Daniel G. Chembo, Yanne Mittal, Sunil Srinivasan, Kartik Hafezi, Mohammad Optics Pattern Formation and Solitons Mode-locking mechanisms are key resources in nonlinear optical phenomena, such as micro-ring solitonic states, and have transformed metrology, precision spectroscopy, and optical communication. However, despite significant efforts, mode-locking has not been demonstrated in the independently tunable multi-timescale regime. Here, we vastly expand the nonlinear mode-locking toolbox into multi-timescale synchronization on a chip. We use topological photonics to engineer a 2D lattice of hundreds of coupled silicon nitride ring resonators capable of hosting nested mode-locked states with a fast (near 1 THz) single-ring and a slow (near 3 GHz) topological super-ring timescales. We demonstrate signatures of multi-timescale mode-locking including quadratic distribution of the pump noise with the two-time azimuthal mode dimensions, as expected by mode-locking theory. Our observations are further corroborated by direct signatures of the near-transform-limit repetition beats and the formation of the temporal pattern on the slow timescale. Moreover, we show that these exotic properties of edge-confined mode-locked states are in sharp contrast to bulk and single-ring counterparts and establish a clear pathway for their identification. Our unprecedented demonstration of mode-locking in topological combs unlocks the implementation of lattice-scale synchronization and independently tunable multi-timescale mode-locking phenomena, also the exploration of the fundamental nonlinearity-topology interplay on a chip. |
| title | On-chip multi-timescale spatiotemporal optical synchronization |
| topic | Optics Pattern Formation and Solitons |
| url | https://arxiv.org/abs/2502.15671 |