Stably accessing octave-spanning microresonator frequency combs in the soliton regime
0103 physical sciences
FOS: Physical sciences
01 natural sciences
7. Clean energy
Physics - Optics
Optics (physics.optics)
DOI:
10.1364/optica.4.000193
Publication Date:
2017-02-01T16:27:23Z
AUTHORS (9)
ABSTRACT
Microresonator frequency combs can be an enabling technology for optical synthesis and timekeeping in low size, weight, power architectures. Such systems require comb operation low-noise, phase-coherent states such as solitons, with broad spectral bandwidths (e.g., octave-spanning) self-referencing to detect the carrier-envelope offset frequency. However, stably accessing is complicated by thermo-optic dispersion. For example, Si3N4 platform, precisely dispersion-engineered structures support broadband operation, but microsecond thermal time constants have necessitated fast pump or control stabilize solitons. In contrast, here we consider how soliton accessed simple laser tuning, at a rate much slower than dynamics. We demonstrate octave-spanning microresonators, including generation of multi-soliton state near 40 mW single-soliton 120 mW. also develop simplified two-step analysis explain these are thermally stable way without laser, outline required properties operation. Our model agrees experimental results well numerical simulations based on Lugiato-Lefever equation that incorporates Moreover, it explains observation member adjacent mode family red-detuned side mitigate requirements states.
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