Fundamental noise limitations to supercontinuum generation in   microstructure fiber
  Broadband noise on supercontinuum spectra generated in microstructure fiber is shown to lead to amplitude fluctuations as large as 50 % for certain input laser pulse parameters. We study this noise using both experimental measurements and numerical simulations with a generalized stochastic nonlinear Schroedinger equation, finding good quantitative agreement over a range of input pulse energies and chirp values. This noise is shown to arise from nonlinear amplification of two quantum noise inputs: the input pulse shot noise and the spontaneous Raman scattering down the fiber. 
K. L. Corwin, N. R. Newbury, J. M. Dudley, S. Coen, S. A. Diddams, K.   Weber, and R. S. Windeler