Flexibly Reconfigurable Kerr Micro-Comb Based on Cascaded Si<sub>3</sub>N<sub>4</sub> Micro-Ring Filters
In recent years, micro-combs, due to their compact structure and high efficiency, have proven to be a practical solution for optical sources. In this paper, an approach to flexibly modulating micro-combs is proposed, and a simulation platform based on <inline-formula><math xmlns="http:...
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| Autores principales: | , , , , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | inglés |
| Publicado: |
MDPI AG
2025-06-01
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| Colección: | Photonics |
| Materias: | |
| Acceso en línea: | https://www.mdpi.com/2304-6732/12/7/661 |
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| Sumario: | In recent years, micro-combs, due to their compact structure and high efficiency, have proven to be a practical solution for optical sources. In this paper, an approach to flexibly modulating micro-combs is proposed, and a simulation platform based on <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>Si</mi><mn>3</mn></msub><msub><mi mathvariant="normal">N</mi><mn>4</mn></msub></mrow></semantics></math></inline-formula> micro-combs with highly integrated, tunable, and reconfigurable features is built. By means of the Lugiato–Lefever equation model, the dynamic evolution process of micro-combs is analyzed, and a micro-ring resonator is designed with a free spectral range of 7.24 nm, an effective mode area of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>1.0829</mn><mspace width="4.pt"></mspace><msup><mrow><mo>µ</mo><mi mathvariant="normal">m</mi></mrow><mn>2</mn></msup></mrow></semantics></math></inline-formula>, and coherent comb lines spanning over 125 THz. Cascaded silicon nitride micro-ring filters are utilized to obtain reconfigurable modulation effects for Kerr-frequency micro-combs. Due to the significance of flexibly controlled optical sources with high-repetition rates and multiple channels for system-on-chip, our proposal has potential in photonic integrated circuit systems, such as high-density photonic computing and large-capacity optical communications, in the future. |
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| ISSN: | 2304-6732 |