Intracavity characterization of micro-comb generation in the single-soliton regime

Soliton formation in on-chip micro-comb generation balances cavity dispersion and nonlinearity and allows coherent, low-noise comb operation. We study the intracavity waveform of an on-chip microcavity soliton in a silicon nitride microresonator configured with a drop port. Whereas combs measured at...

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Veröffentlicht in:Optics express 2016-05, Vol.24 (10), p.10890-10897
Hauptverfasser: Wang, Pei-Hsun, Jaramillo-Villegas, Jose A, Xuan, Yi, Xue, Xiaoxiao, Bao, Chengying, Leaird, Daniel E, Qi, Minghao, Weiner, Andrew M
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Sprache:eng
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Zusammenfassung:Soliton formation in on-chip micro-comb generation balances cavity dispersion and nonlinearity and allows coherent, low-noise comb operation. We study the intracavity waveform of an on-chip microcavity soliton in a silicon nitride microresonator configured with a drop port. Whereas combs measured at the through port are accompanied by a very strong pump line which accounts for >99% of the output power, our experiments reveal that inside the microcavity, most of the power is in the soliton. Time-domain measurements performed at the drop port provide information that directly reflects the intracavity field. Data confirm a train of bright, close to bandwidth-limited pulses, accompanied by a weak continuous wave (CW) background with a small phase shift relative to the comb.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.24.010890