Journal
OPTICS EXPRESS
Volume 30, Issue 22, Pages 39816-39825Publisher
Optica Publishing Group
DOI: 10.1364/OE.470376
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Funding
- Engineering and Physical Sciences Research Council [EP/S001018/1]
- European Research Council [725046, 851758]
- Defence Science and Technology Laboratory [DSTLX1000142078]
- Innovate UK [10004412, 77087]
- Leverhulme Trust [ECF-2020-537]
- Natural Sciences and Engineering Research Council of Canada
- Ministere de l'Economie, de la Science et de l'Innovation-Quebec
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB24030300]
- European Research Council (ERC) [851758, 725046] Funding Source: European Research Council (ERC)
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This study theoretically and experimentally investigates the soliton conversion efficiency between the narrowband input pulse and the two outputs of a four-port integrated microcavity. It is found that the single-soliton conversion efficiencies of the broadband comb outputs are high, with a total conversion efficiency of 72% in a specific micro-ring resonator case.
Laser cavity-soliton microcombs are robust optical pulsed sources, usually im-plemented with a microresonator-filtered fibre laser. In such a configuration, a nonlinear microcavity converts the narrowband pulse resulting from bandwidth-limited amplification to a background-free broadband microcomb. Here, we theoretically and experimentally study the soliton conversion efficiency between the narrowband input pulse and the two outputs of a four-port integrated microcavity, namely the 'Drop' and 'Through' ports. We simultaneously measure on-chip, single-soliton conversion efficiencies of 45% and 25% for the two broadband comb outputs at the 'Drop' and 'Through' ports of a 48.9 GHz free-spectral range micro-ring resonator, obtaining a total conversion efficiency of 72%.
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