Title: Signaling on the Continuous Spectrum of Nonlinear Optical fiber,
Abstract: This paper studies different signaling techniques on the continuous spectrum
(CS) of nonlinear optical fiber defined by nonlinear Fourier transform. Three
different signaling techniques are proposed and analyzed based on the
statistics of the noise added to CS after propagation along the nonlinear
optical fiber. The proposed methods are compared in terms of error performance,
distance reach, and complexity. Furthermore, the effect of chromatic dispersion
on the data rate and noise in nonlinear spectral domain is investigated. It is
demonstrated that, for a given sequence of CS symbols, an optimal bandwidth (or
symbol rate) can be determined so that the temporal duration of the propagated
signal at the end of the fiber is minimized. In effect, the required guard
interval between the subsequently transmitted data packets in time is minimized
and the effective data rate is significantly enhanced. Moreover, by selecting
the proper signaling method and design criteria a reach distance of 7100 km is
reported by only singling on the CS at a rate of 9.6 Gbps.