发明名称 |
Optical fibre fabrication. |
摘要 |
<p>A rod-in-tube method of manufacturing optical fibre where the rod and the tube are fed into the heating zone of a furnace at different rates. The rod may be mounted relative to the tube such as to permit self-centring of the rod in the tube when the tube collapses onto the rod in the heating zone, forces causing self-centring occurring when the rod feed rate is greater than the tube feed rate. The drawn fibre may be monitored by means of an in-line fibre core to 0/D monitor and feed-back employed to drive the tube and rod feed mechanisms accordingly thereby providing precise control of the core to O/D ratio of the fibre. Very long fibre lengths may be achieved by feeding the rod into the heating zone at a greater rate than a very large mass tube billet and consecutively feeding further rods into the tube billet as the preceding rod is used up.</p> |
申请公布号 |
EP0141534(A2) |
申请公布日期 |
1985.05.15 |
申请号 |
EP19840306725 |
申请日期 |
1984.10.03 |
申请人 |
STC PLC |
发明人 |
HARRISON, ANDREW PETER;MACKAY, MALCOLM DUNCAN |
分类号 |
G02B6/00;C03B37/012;C03B37/025;C03B37/027;C03C13/04;(IPC1-7):C03B37/025 |
主分类号 |
G02B6/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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