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1. (WO1991003436) FABRICATION OF FUSED FIBRE DEVICES

Pub. No.:    WO/1991/003436    International Application No.:    PCT/GB1990/001345
Publication Date: Mar 21, 1991 International Filing Date: Aug 31, 1990
IPC: G02B 6/28
Applicants: BT & D TECHNOLOGIES LIMITED
ROWE, Christopher, John
MORTIMORE, David, Bryan
WILKINSON, Iain, John
ACHURCH, Nicholas, Edward
Inventors: ROWE, Christopher, John
MORTIMORE, David, Bryan
WILKINSON, Iain, John
ACHURCH, Nicholas, Edward
Title: FABRICATION OF FUSED FIBRE DEVICES
Abstract:
Apparatus for fabricating fused optical fibre devices comprises a furnace provided with an electric heating element (5). A heat-distributing insert (7) is provided within the heating element (5), the heating element and the insert being sized and shaped to define a heating chamber for an optical fibre arrangement. The apparatus includes means for passing electric current through the heating element (5), and means (8) for supplying and maintaining an inert atmosphere within the heating chamber.