Patent ID: 6175436
Filing Date: 2001-01-16
Classification: H01S,H04B

Abstract:
A stabilized optical amplifier, comprising:an optical amplifier receiving an optical data signal of one or more wavelengths on an input side, amplifying said signal, and outputting said signal on an output side;first and second wavelength-selective optical couplers connected respectively to said input and output sides, respectively to input and output optical channels, and to ends of an optical feedback path included in a feedback loop including said optical amplifier, wherein said wavelength-selective optical couplers block said optical data signal from said feedback loop and pass a feedback signal having a feedback wavelength different than said one or more wavelengths of said optical data signal; andan optical attenuator included in said feedback loop and, together with said wavelength-selective couplers, selectively attenuating said feedback signal.