Title :
Compensation of Dispersion and Nonlinear Impairments Using Digital Backpropagation
Author :
Ip, Ezra ; Kahn, Joseph M.
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., Stanford, CA
Abstract :
Optical fiber transmission is impacted by linear and nonlinear impairments. We study the use of digital backpropagation (BP) in conjunction with coherent detection to jointly mitigate dispersion and fiber nonlinearity. We propose a noniterative asymmetric split-step Fourier method (SSFM) for solving the inverse nonlinear Schrodinger equation (NLSE). Using simulation results for RZ-QPSK transmitted over terrestrial systems with inline amplification and dispersion compensation, we obtain heuristics for the step size and sampling rate requirements, as well as the optimal dispersion map.
Keywords :
Fourier transform optics; Schrodinger equation; compensation; inverse problems; nonlinear equations; nonlinear optics; optical fibre communication; optical fibre dispersion; optical receivers; quadrature phase shift keying; sampling methods; RZ-QPSK transmission; coherent detection; digital backpropagation; inline amplification; integrated digital receivers; inverse nonlinear Schrodinger equation; linear impairments; noniterative asymmetric split-step Fourier method; nonlinear impairments; optical fiber dispersion compensation; optical fiber transmission; optimal dispersion map; sampling rate; terrestrial system; Backpropagation; Fiber nonlinear optics; Nonlinear optics; Optical fiber dispersion; Optical fiber polarization; Optical filters; Optical mixing; Optical receivers; Optical signal processing; Phase noise; Coherent detection; chromatic dispersion; digital signal processing; optical Kerr effect; optical communications; phase noise; phase shift keying;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2008.927791
