Title :
Low loss fluoride fibre by reduced pressure casting
Author :
Carter, Stephen F. ; Moore, M.W. ; Williams, John R. ; Ranson, D. ; France, P.W.
Author_Institution :
British Telecom Res. Labs., Ipswich, UK
Abstract :
A major cause of loss in fluoride fibres has been extrinsic scatter from bubbles trapped in preforms during casting. A new reduced pressure casting (RPC) technique has been developed to eliminate bubbles, and the minimum fibre loss has been reduced to 0.65+or-0.25 dB/km at 2.59 mu m, measured over a 110 m length of fibre.
Keywords :
aluminium compounds; barium compounds; bubbles in solids; casting; fluoride glasses; lanthanum compounds; optical fibres; optical glass; optical losses; optical workshop techniques; sodium compounds; zirconium compounds; 110 m; 2.59 micron; RPC; ZBLAN composition; ZrF 4-BaF 2-LaF 3-AlF 3-NaF; bubble elimination; extrinsic scatter; fibre loss; fluoride fibres; minimum fibre loss; preforms; reduced pressure casting;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19901361
