Supplement 1: Nonlinear Fourier transform for optical data processing and transmission: advances and perspectives TuritsynSergei K. PrilepskyJaroslaw E. LeSon Thai WahlsSander FruminLeonid L. KamalianMorteza DerevyankoStanislav A. 2017 Supplemental Document Originally published in Optica on 20 March 2017 (optica-4-3-307)