发明名称 |
Verfahren und Vorrichtung zum Aufnehmen und Auswerten von Parameterprofilen an optischen Fasern |
摘要 |
<p>The method involves sending a short laser pulse in the long-wave range into the otic fibre and detecting an intensity, wavelength, and run-time of a reflected Anti-Stokes-Raman line as function of a location on the optic fibre. The wavelength of the Anti-Stokes-Raman line is put in the area of attenuation minimum of the fibre and a maximum detector sensitivity. The otic fibre is used exclusively and/or additionally for a telecommunications transmittion, to detect unauthorised tapping coupler, sensitively and without blind spots.</p> |
申请公布号 |
DE19732300(A1) |
申请公布日期 |
1999.02.11 |
申请号 |
DE1997132300 |
申请日期 |
1997.07.26 |
申请人 |
DEUTSCHE TELEKOM AG, 53113 BONN, DE |
发明人 |
GRUHL, HARTMUT, DR., 64372 OBER-RAMSTADT, DE |
分类号 |
G01D5/353;(IPC1-7):G01M11/02;G08B17/00;G01D5/26;G01K11/32;G01N21/65 |
主分类号 |
G01D5/353 |
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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