ANALYSIS OF THE REDUCTION OF HYDROGEN-INDUCED INFRARED LOSS INCREASES IN FLUORINE-DOPED PCVD SILICA FIBRE PREFORMS C.A.M. Mulder, Th.P.M. Meeuwsen et G.E. Thomas J. Phys. Colloques, 46 C8 (1985) C8-591-C8-595 DOI: 10.1051/jphyscol:1985894