Wang Pei-Hsun, Jaramillo-Villegas Jose A, Xuan Yi, Xue Xiaoxiao, Bao Chengying, Leaird Daniel E, Qi Minghao, Weiner Andrew M
Opt Express. 2016 May 16;24(10):10890-7. doi: 10.1364/OE.24.010890.
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.
片上微梳产生中的孤子形成平衡了腔色散和非线性，并允许进行相干、低噪声的梳状操作。我们研究了配置有出射端口的氮化硅微谐振器中片上微腔孤子的腔内波形。在直通端口测量的梳状信号伴随着一条非常强的泵浦线，其占输出功率的99%以上，而我们的实验表明，在微腔内，大部分功率集中在孤子中。在出射端口进行的时域测量提供了直接反映腔内场的信息。数据证实了一串明亮的、接近带宽受限的脉冲，伴随着一个微弱的连续波（CW）背景，相对于梳状信号有一个小的相移。
