Broadband noise-like pulse generation at 1  µm via dispersion and nonlinearity management

We demonstrate that optical microfibers integrated in Yb-doped fiber lasers boost broadband noise-like pulse (NLP) generation via dispersion and nonlinearity management, with an optical spectrum spanning from below 1000 nm to beyond 1600 nm when the diameter of the optical microfiber is 1.2 µm. Numerical simulations show that dispersion and nonlinearity management provided by the optical microfiber is responsible for the broadband NLP generation. Furthermore, it is shown experimentally that dispersion and nonlinearity management via optical microfibers can also bring the highest optical rogue waves along with the broadest optical spectrum.