Abstract
Compact optical frequency comb sources with gigahertz repetition rates are desirable for a number of important applications including arbitrary optical waveform generation and direct comb spectroscopy. We report the generation of phase-locked, gigahertz repetition rate optical frequency combs in a chalcogenide photonic chip. The combs are formed via the interplay of stimulated Brillouin scattering and Kerr-nonlinear four-wave mixing in an on-chip Fabry–Perot waveguide resonator incorporating a Bragg grating. Phase-locking of the comb is confirmed with real-time measurements, and a chirp of the comb repetition rate within the pump pulse was observed. These results represent a significant step towards the realization of integrated optical frequency comb sources with gigahertz repetition rates.
| Original language | English |
|---|---|
| Pages (from-to) | 311-314 |
| Number of pages | 4 |
| Journal | Optica |
| Volume | 1 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 20 Nov 2014 |
| Externally published | Yes |
Keywords
- Integrated optics devices
- Nonlinear optical materials
- Nonlinear optics, four-wave mixing
- Scattering, stimulated Brillouin
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