Method for the compensation of nonlinear impairments in dispersion-managed optical fiber links using phase conjugation and equivalent optical link

摘要

A method for nonlinearity compensation for an optical transmission link includes determining a dispersion effect of a transmission link; applying a phase conjugation to the transmission link, the phase conjugation responsive to an input wave over the transmission link and providing a conjugated version of the input wave; and configuring an optimum equivalent link responsive to the phase conjugation after the transmission link to compensate for a non-linear dispersion effect from said transmission link.

主权项

1. A method for nonlinearity compensation for an optical transmission link comprising the steps of:
determining a dispersion effect of a transmission link; applying a phase conjugation to the transmission link, said phase conjugation responsive to an input wave over said transmission link and providing a conjugated version of said input wave; and configuring an optimum equivalent link responsive to said phase conjugation after said transmission link to compensate for a non-linear dispersion effect from said transmission link; wherein said equivalent link comprises a configuration responsive to
Γ=∫0Ld(1)exp[iγ1(z)P1(z)z]dz−∫0Ld(2)exp[iγ2(z)P2(z)z]dz where Γ denotes an equivalence factor, Ld(1) denotes a dispersion length of said transmission link, Ld(2) denotes a dispersion length of said equivalent link, γ1 denotes a nonlinear parameter of said transmission link; γ2 denotes a nonlinear parameter of said equivalent link, P1(z) denotes a power evolution of said transmission link, and P2(z) denotes a power evolution of said equivalent link.