Patent ID: 7102813

Claim:
Optical amplifier device comprising: optical inputs; a first nonlinear optical fiber, having a first set of fiber property parameters, comprising a first zero-dispersion wavelength; a second nonlinear optical fiber, having a second set of fiber property parameters, comprising a second zero-dispersion wavelength; optical demultiplexer connecting said optical input and said first and second nonlinear optical fibers, directing optical signals within a first wavelength interval to said first nonlinear optical fiber and directing optical signals within a second wavelength interval to said second nonlinear optical fiber; at least one optical pump, pumping said first and second nonlinear optical fibers with radiation having a pump wavelength in the vicinity of respective said zero-dispersion wavelength; said first nonlinear optical fiber giving a high parametric amplification in said first wavelength interval and said second nonlinear optical fiber giving a high parametric amplification in said second wavelength interval; optical outputs; and optical multiplexer connecting said first and second nonlinear optical fibers and said optical output, merging optical signals from said first and second nonlinear optical fibers into said optical output; a pump wavelength provided to said first nonlinear optical fiber being positioned outside said first wavelength interval and a pump wavelength provided to said second nonlinear optical fiber being positioned outside said second wavelength interval.