Patent ID: 9640936
Date: 2017-05-02
CPC Classifications: G02B,H01S

Claim:
1. An Ytterbium doped multicomponent glass fiber for laser generation and amplification from 1.01 to 1.12 micron wavelength, comprising: a core; and a cladding; wherein said core comprises: at least 2 weight percent glass network modifier selected from BaO, CaO, MgO, ZnO, PbO, K2O, Na2O, Li2O, Y2O3, or combinations thereof; and ytterbium oxide at a level from about 3 to about 50 weight percent; wherein: a mode of the core is guided with step index difference between the core and the cladding; a numerical aperture of the fiber is between 0.01 and 0.04; a core diameter is from 60 micron to 150 micron; and a length of the gain fiber is shorter than 60 cm.