Observation of modulation instability in a coherently driven active fiber ring resonator at 2 µm wavelength
We report the first, to our knowledge, observation of the nonlinear phenomenon known as modulation instability (MI) in a coherently driven fiber resonator pumped at 1972 nm. To compensate for the very high losses in this spectral region, we have integrated a thulium-doped fiber amplifier inside the cavity. Lower losses allow a lower MI threshold, leading to the observation of this phenomenon at a moderate input power. The results align closely with the numerical simulations of the system. Our study shows that active compensation of loss can be implemented in the 2 µm wavelength range to construct fiber ring cavities with high finesse. It paves the way to the observation of more complex nonlinear effects optical frequency comb through cavity soliton generation.
2-s2.0-85205527768
39352982
2024-10-01
49
19
5463
5466
REVIEWED
EPFL
Funder | Funding(s) | Grant Number | Grant URL |
Agence Nationale de la Recherche | |||
University of Burgundy | |||
Ministère de l’Enseignement supérieur, de la Recherche et de l’Innovation | |||
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