发明名称 |
Method of modifying an optical waveguide and waveguide so modified. |
摘要 |
<p>A method of structurally modifying a silica monomode optical fibre (4) by launching optical power into the fibre (4) from a Nd:YAG laser operating at 1.064um and raising the temperature of a portion of the fibre (4) by bringing a metal film (12) into contact with a polished half-coupler block (6) to absorb energy from the laser (2). A structural modification of the fibre is initiated which propagates towards the laser (2) sustained by the optical power. It provides a means of decommissioning an optical fibre. The modified optical fibre (4) has regular periodic damage sites which can be used to form a diffraction grating. The method may also be used as an optical power limiter to protect optical networks from too high optical power inputs.</p> |
申请公布号 |
EP0309234(A1) |
申请公布日期 |
1989.03.29 |
申请号 |
EP19880308776 |
申请日期 |
1988.09.21 |
申请人 |
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY |
发明人 |
KASHYAP, RAMAN |
分类号 |
G02B6/00;B23K26/00;C03B37/15;G02B6/02;G02B6/255;G02F1/01 |
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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