Patent ID: 6631028
Filing Date: 2003-10-07
Classification: H01S,H04B

Abstract:
An in-line broadband amplifier, comprising:at least one input fiber a WDM splitter coupled to the input fiber, the splitter splitting an optical signal into at least a first wavelength and a second wavelength, wherein a transition from a stop band to a pass band of the splitter occurs in 20 nm or less; a Raman amplifier coupled to the splitter; a rare-earth doped optical amplifier coupled to the splitter; a WDM combiner coupled to the Raman amplifier and the rare-earth doped optical amplifier, the WDM combiner combining an optical signal into at least a first wavelength and a second wavelength, wherein a transition from a stop band to a pass band of the combiner occurs in 20 nm or less; and an output fiber coupled to the WDM combiner.