Patent ID: 6404539
Filing Date: 2002-06-11
Classification: H01S

Abstract:
A light source for optical data transmission with:a pumping light source for generating pumping light at a first wavelength; an optical fiber which is doped with an active laser medium which can be excited at a first wavelength, whereby it emits emission light with a wavelength spectrum with at least one wavelength range of high power and at least one wavelength range with relatively lower power; a means for coupling the pumping light into the doped optical fiber, whereby the laser medium is excited, the emission light of the laser medium being partially propagated in the doped optical fiber; a selection means in or on the doped optical fiber for partial selection of light in the wavelength range with relatively lower power of the emission spectrum, whereby this part of the spectrum is preferably amplified during further passage through the doped optical fiber; the doped optical fiber is doped with a mixture of various rare-earth ions.