发明名称 |
Method for testing optical fibres and device for carrying out the method. |
摘要 |
In this method, echo detection is used to determine the position of fractures in optical fibres (7). A pulse generator (1) delivers two pulse trains via its two outputs. The first train triggers the supply of a laser (3), while the second pulse train, which is transmitted with an adjustable delay with respect to the first pulse train, distributes output signals from a photodetector (10) onto "distance ranges", in order to be able to determine the position of the fracture. <IMAGE> |
申请公布号 |
CH618794(A5) |
申请公布日期 |
1980.08.15 |
申请号 |
CH19770008652 |
申请日期 |
1977.07.13 |
申请人 |
INTERNATIONAL STANDARD ELECTRIC CORP. |
发明人 |
RICHARD EDWARD EPWORTH;COLIN ANDREW WHITE;IAN STEWART FEW |
分类号 |
G01M11/00;G01M11/02;G01R31/08;G01S17/08;G01S17/10;G02B6/255;H04B10/08;(IPC1-7):G02B5/14;G01N21/88 |
主分类号 |
G01M11/00 |
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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