Bichromatically pumped nonlinear fiber ring cavity

Kerr frequency combs in passive resonators have attracted considerable interest during the last decade as a complementary approach to comb formation based on mode-locked lasers. Most of previous works have focused on monochromatic CW-pumping either with or without parametric seeding [1-3]. Here, we report on an extensive study of a dual pumping configuration in a passive nonlinear fiber ring cavity. Depending on the input conditions, we observed a rich variety of nonlinear dynamics leading to different comb states.