title: Intracavity characterization of micro-comb generation in the single-soliton regime.
abstract: 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.
authors.forename: Pei-Hsun
authors.initials: PH
authors.lastname: Wang
authors.forename: Jose A
authors.initials: JA
authors.lastname: Jaramillo-Villegas
authors.forename: Yi
authors.initials: Y
authors.lastname: Xuan
authors.forename: Xiaoxiao
authors.initials: X
authors.lastname: Xue
authors.forename: Chengying
authors.initials: C
authors.lastname: Bao
authors.forename: Daniel E
authors.initials: DE
authors.lastname: Leaird
authors.forename: Minghao
authors.initials: M
authors.lastname: Qi
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Weiner