Patent ID: 6215566
Filing Date: 2001-04-10
Classification: H01S,H04B,H04J

Abstract:
A multi-wavelength light source for outputting laser light having a plurality of collectively modified wavelength comprising:wavelength demultiplex/amplify/multiplexing means for demultiplexing input light into a plurality of predetermined different wavelengths, individually optical amplifying each of the different wavelengths, and wavelength-multiplexing the different wavelengths;polarizing means for extracting predetermined polarized components from output light of said wavelength demultiplex/amplify/multiplexing means;light splitting means for splitting output light of said polarizing means;depolarizing means for depolarizing one optical output of said light splitting means and applying it to the wavelength demultiplex/amplify/multiplexing means; andmodulating means for modulating another optical output of said light splitting means in accordance with a modulation signal.