Exact NFDM Transmission in the Presence of Fiber-Loss
Vinod Bajaj; TU Delft, Netherlands and Nokia Bell Labs, Germany
Nonlinear frequency division multiplexing (NFDM) techniques encode information in the nonlinear spectrum which is obtained from the nonlinear Fourier transform (NFT) of a signal. NFDM techniques so far have been applied to the nonlinear Schrödinger equation that models signal propagation in a lossless optical fiber. Conventionally, NFDM systems designed with lossy fibers have to use the path-average approximation in order to make the propagation model suitable for NFDM. The error of the path-average approximation degrades the performance of NFDM systems. In this session of the workshop, I will talk about an idea of using dispersion decreasing fiber (DDF) for NFDM systems. The propagation model of these DDFs is exactly suitable for NFDM. NFDM systems designed using DDF achieve performance gains by avoiding the path-average approximation.