Method and system for suppressing signal distortions associated with nonlinearity in optical fibers
AssigneeLucent Technologies Inc.
InventorsCaroline Brisson, René-Jean Essiambre, Robert M. Jopson
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Abstract
A method and system for suppressing signal distortions in optical signals associated with nonlinearity in optical fibers includes propagating an optical signal through a transmission medium, the transmission medium comprising a sufficiently low dispersion such that a nonlinear distortion imparted on the propagating optical signal by the transmission medium is imprinted primarily on an optical field phase of the optical signal, and converting the propagated optical signal to an electrical signal such that the optical field phase information of the optical signal is not translated into the electrical domain.
Claims20
A method for suppressing nonlinear distortions in an optical signal associated with the propagation of said optical signal through a nonlinear transmission medium, comprising:
- propagating said optical signal through a nonlinear transmission medium, said nonlinear transmission medium comprising a sufficiently low dispersion such that a nonlinear distortion imparted on said propagating optical signal by said nonlinear transmission medium is imprinted primarily on an optical field phase of said optical signal;
- and
- converting said propagated optical signal to an electrical signal such that the optical field phase information of said optical signal is not translated into the electrical domain.
A system for suppressing nonlinear distortions in a WDM optical signal associated with the propagation of said optical signal through a nonlinear transmission medium, comprising:
- an optical oscillator for producing an optical oscillation signal;
- at least one nonlinear transmission medium, for propagating said optical oscillation signal and said WDM optical signal, said nonlinear transmission medium comprising a sufficiently low dispersion such that a nonlinear distortion imparted on said propagating WDM optical signal by said nonlinear transmission medium is imprinted primarily on an optical field phase of said WDM optical signal;
- at least one optical-to-electrical converter for converting said propagated WDM optical signal to a respective electrical for each channel of said WDM optical signal, such that the optical field phase information of said WDM optical signal is not translated into the electrical domain, said optical-to-electrical converter comprising a bandwidth inclusive of all of the wavelengths of said WDM optical signal;
- and
- at least one electrical bandpass filter for electrically filtering selected ones of the channels of said converted electrical signal at a respective intermediate frequency of each of said selected channels.
Dependencies are inferred from the claim text.