SiO(2)-clad fibers with selectively volatilized soft-glass cores.
By using a thick-walled SiO(2) tube (25-mm outside diameter, 1-mm inside diameter), a soft-glass core containing Nd or Yb-Er has its alkali (and to a lesser extent its alkaline earth) components volatilized during drawing to give a good-quality laser fiber with Nd- or Yb-Er-doped cores.
Snitzer
E
E
Tumminelli
R
R