Self-Referencing Silicon Micro-Racetrack Resonator for on-Chip Optical Frequency Reference

We propose a dual-polarization high-Q silicon micro-racetrack resonator for laser frequency stabilization. Based on dual-mode self-reference temperature measurement and photothermal feedback technology, the on-chip reference cavity temperature is stabilized within ± 15 µK, indicating that ± 100 kHz reference frequency stability is also achieved.