Patent ID: 7068943
Filing Date: 2006-06-27
Classification: H04B

Abstract:
1. A dispersion compensating device for an optical signal having at least one wavelength channel lying within a wavelength range, the dispersion compensating device comprising: a negative dispersion fiber having an input configured to receive the optical signal, the negative dispersion fiber having a length and a dispersion sufficient to remove any positive chirp from each wavelength channel of the optical signal, thereby outputting a negatively chirped optical signal; at least one device configured to amplify the negatively chirped optical signal; and a nonlinear positive dispersion fiber having an end configured to receive the amplified negatively chirped optical signal, the nonlinear positive dispersion fiber having a variable dispersion over its length wherein the nonlinear positive dispersion fiber comprises at least two fiber segments operatively coupled to each other with a spectral located filter therebetween, each nonlinear positive dispersion fiber segment having different dispersion properties.