Patent ID: 6606187
Filing Date: 2003-08-12
Classification: H01S,H04B

Abstract:
A broadband amplifier, comprising:at least one input fiber with an input signal path; a splitter coupled to the input fiber, the splitter splitting an optical signal into at least a first wavelength and a second wavelength; an S band amplifier coupled to the splitter and operates in the range of 1430 to 1530 nm; a pump source producing a pump beam that is introduced into and bi-directionally pumps the S band amplifier along the input signal path, the pump beam being removed from the input signal path after it amplifies an input signal and exits from the S band amplifier; a second amplifier coupled to the splitter, wherein a pump wavelength of the S-band amplifier is different than a pump wavelength of the second amplifier; a combiner coupled to the S-band amplifier and the second amplifier, the combiner combining at least the first wavelength and the second wavelength; and an output fiber coupled to the combiner.