Optimized all-fiber supercontinuum source at 1.3 µm generated in a stepwise dispersion decreasing fiber arrangement

In this paper, the generation of a continuous-wave (CW)-pumped supercontinuum (SC) source at 1.3 μm is described. The device makes use of a tunable Yb-doped fiber laser, a cascade of Fiber Bragg Grating mirrors, and a concatenation of standard silica fibers with stepwise decreasing dispersion. It is shown that the dispersion-decreasing-fiber set enhances the width of the generated SC, since it favors the fission of the CW input into high-order solitons. The generated SC spans from 1280 to 1513 nm, shows an average output power of 1.34 W, and exhibits > 0-dBm/nm spectral density of over 200 nmMinisterio de Educación y CienciaComunidad de Madri