4 research outputs found
Statistics of the Eigenvalues of a Noisy Multi-Soliton Pulse
For Nonlinear-Frequency Division-Multiplexed (NFDM) systems, the statistics
of the received nonlinear spectrum in the presence of additive white Gaussian
noise (AWGN) is an open problem. We present a novel method, based on the
Fourier collocation algorithm, to compute these statistics.Comment: Accepted for presentation at European Conference on Optical
Communications (ECOC) 201
Dual polarization nonlinear Fourier transform-based optical communication system
New services and applications are causing an exponential increase in internet
traffic. In a few years, current fiber optic communication system
infrastructure will not be able to meet this demand because fiber nonlinearity
dramatically limits the information transmission rate. Eigenvalue communication
could potentially overcome these limitations. It relies on a mathematical
technique called "nonlinear Fourier transform (NFT)" to exploit the "hidden"
linearity of the nonlinear Schr\"odinger equation as the master model for
signal propagation in an optical fiber. We present here the theoretical tools
describing the NFT for the Manakov system and report on experimental
transmission results for dual polarization in fiber optic eigenvalue
communications. A transmission of up to 373.5 km with bit error rate less than
the hard-decision forward error correction threshold has been achieved. Our
results demonstrate that dual-polarization NFT can work in practice and enable
an increased spectral efficiency in NFT-based communication systems, which are
currently based on single polarization channels
Digital signal processing for fiber nonlinearities [Invited]
This paper reviews digital signal processing techniques that compensate, mitigate, and exploit fiber nonlinearities in coherent optical fiber transmission systems