Enhanced Soliton Stability in Bi-directionally Coupled Laser-Microresonator Systems
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866917433256706048 |
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| author | Bengel, L. Peng, H. de Rijk, B. Koos, C. Reichel, W. |
| author_facet | Bengel, L. Peng, H. de Rijk, B. Koos, C. Reichel, W. |
| contents | We investigate a bi-directionally coupled system consisting of a Kerr-nonlinear microresonator and a continuous-wave single-mode semiconductor laser. Inside the resonator, a forward-propagating and a backscattered field interact nonlinearly, while a fraction of the backscattered field is fed back into the laser cavity. We show in this paper that the interaction of the laser with the feedback opens up new ways of stabilizing $1$-solitons. Using numerical bifurcation analysis, we systematically identify existence ranges of time-harmonic 1-soliton states in the anomalous dispersion regime. We demonstrate that, in contrast to the uni-directional configuration, the bi-directional coupling introduces a dynamic self-correcting response of the laser frequency that stabilizes $1$-solitons. These enhanced stability properties of $1$-solitons thus enable robust and self-started frequency-comb generation, consistent with the existing experimental observations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_22443 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Enhanced Soliton Stability in Bi-directionally Coupled Laser-Microresonator Systems Bengel, L. Peng, H. de Rijk, B. Koos, C. Reichel, W. Optics Analysis of PDEs We investigate a bi-directionally coupled system consisting of a Kerr-nonlinear microresonator and a continuous-wave single-mode semiconductor laser. Inside the resonator, a forward-propagating and a backscattered field interact nonlinearly, while a fraction of the backscattered field is fed back into the laser cavity. We show in this paper that the interaction of the laser with the feedback opens up new ways of stabilizing $1$-solitons. Using numerical bifurcation analysis, we systematically identify existence ranges of time-harmonic 1-soliton states in the anomalous dispersion regime. We demonstrate that, in contrast to the uni-directional configuration, the bi-directional coupling introduces a dynamic self-correcting response of the laser frequency that stabilizes $1$-solitons. These enhanced stability properties of $1$-solitons thus enable robust and self-started frequency-comb generation, consistent with the existing experimental observations. |
| title | Enhanced Soliton Stability in Bi-directionally Coupled Laser-Microresonator Systems |
| topic | Optics Analysis of PDEs |
| url | https://arxiv.org/abs/2604.22443 |