Optical Frequency Division & Pulse Synchronization Using a Photonic-Crystal Microcomb Injected Chip-Scale Mode-Locked Laser
- Resource Type
- Periodical
- Authors
- Shirpurkar, C.; Zang, J.; Bustos-Ramirez, R.; Carlson, D.; Briles, T.C.; Trask, L.R.; Pericherla, S.V.; Huang, D.; Bhardwaj, A.; Hoefler, G.E.; Papp, S.B.; Delfyett, P.J.
- Source
- Journal of Lightwave Technology J. Lightwave Technol. Lightwave Technology, Journal of. 42(4):1250-1256 Feb, 2024
- Subject
- Communication, Networking and Broadcast Technologies
Photonics and Electrooptics
Optical resonators
Optical pulses
Synchronization
Frequency conversion
Resonant frequency
Laser mode locking
Optical interferometry
Photonic crystal resonator combs
photonic integrated circuits
semiconductor mode-locked lasers
electro-optic division
- Language
- ISSN
- 0733-8724
1558-2213
A mode-locked laser photonic integrated circuit with a repetition rate of 10 GHz is optically synchronized to a tantala-based photonic crystal resonator comb with a repetition rate of 200 GHz. The synchronization is achieved through regenerative harmonic injection locking using a coupled optoelectronic oscillator loop resulting in an optical frequency division factor of 20. The repetition rate of the photonic crystal resonator comb is stabilized and locked through electro-optic division. This stability is transferred to the mode-locked laser where we measure a fractional frequency instability of $8\times 10^{-11}$ at an averaging time of 10 s for the repetition rate signal of the mode-locked laser. Furthermore, we also measure the near carrier phase noise of the pulse repetition rate and estimate the integrated rms timing jitter of the pulses to be 6 ps.