720 Million Quality Factor Integrated All-Waveguide Photonic Resonator. - Kaikai Liu; Naijun Jin; Haotian Cheng; Matthew W. Puckett; Ryan O. Behunin; Karl D. Nelson; Peter T. Rakich; Daniel J. Blumenthal (DRC, 2021)

Optical Frequency Division on SiN-based Platform for Low-noise mmWave Generation. - Shuman Sun; Beichen Wang; Kaikai Liu; Jiawei Wang; Ruxuan Liu; Mandana Jahanbozorgi; Zijiao Yang 001; Paul A. Morton; Karl D. Nelson; Daniel J. Blumenthal; Xu Yi (OFC, 2024)

Photonic integrated 4-meter-coil resonator critically coupled from 900 nm to 1600 nm. - Andrew S. Hunter; Kaikai Liu; Meiting Song; Mark W. Harrington; Andrei Isichenko; Karl D. Nelson; Daniel J. Blumenthal (OFC, 2025)

Dual-Wavelength ϕ-OFDR Using a Hybrid-Integrated Laser Stabilized to an Integrated SiN Coil Resonator. - Mohamad Hossein Idjadi; Stefano Grillanda; Nicolas K. Fontaine; Mikael Mazur; Kwangwoong Kim; Tzu-Yung Huang; Cristian A. Bolle; Rose Kopf; Mark Cappuzzo; Kaikai Liu; David A. S. Heim; Andrew Hunter; et al. (OFC, 2025)