Patent ID: 6944367

Claim:
An optical source generator for wavelength division multiplexing optical communication systems, comprising: a first and a second pumping light generator that generate and output pumping lights having a particular wavelength; a first wavelength router that wavelength-division-demultiplexes and outputs the pumping lights output from the first and second pumping light generator; a first plurality of optical fiber amplifiers that generate spontaneous emissions from the pumping lights output by a first port section of the first wavelength router, and output the generated spontaneous emissions as optical signals; a second plurality of optical fiber amplifiers that generate spontaneous emissions from the pumping lights output by a second port section of the first wavelength router, and output the generated spontaneous emissions as optical signals; a second wavelength router that wavelength-division-multiplexes optical signals output by the first and second plurality of optical fiber amplifiers and outputs the wavelength-division-multiplexed optical signals; a first optical band pass filter for passing through only optical sources having a particular wavelength band of multi-wavelength optical sources output by the second wavelength router and inputting the passed optical sources into the first wavelength router; and a second optical band pass filter for passing through only optical sources having a particular wavelength band of multi-wavelength optical sources output by the second wavelength router and inputting the passed optical sources into the first wavelength router, wherein first optical sources are generated through first optical paths which direct in an input direction of the pumping lights inputted from the first pumping light generator, second optical sources being generated through second optical paths which direct in an input direction of the pumping lights inputted from the second pumping light generator.