An optical fiber, having a fiber cladding and a fiber core doped with laser active material, is embedded in an optical waveguide core having a refractive index almost equal to that of the optical fiber cladding, and pumping light is guided, in a side pumping manner, from the semiconductor laser via the...http://www.google.fr/patents/US20020037134?utm_source=gb-gplus-shareBrevet US20020037134 - Side pumping laser light source
