发明名称 |
Long distance optical fiber sensing system and method |
摘要 |
A long-distance fiber optic monitoring system having a sensing unit and an analyzer that is remotely located from the sensing unit is provided. The sensing unit comprises a source of optical energy for injecting optical energy into the fiber optical cable and an optical detector configured to detect an optical return signal from the optical fiber. The detected optical return signal is associated with an acoustic signal impinging on the optical fiber. The analyzer receives a signal from the remote sensing unit via the optical fiber that is representative of the optical return signal, and determines a location of a disturbance based at least on the received signal. The representative signal can be transmitted from the remote sensing unit to the analyzer as an optical signal or via a metallic wired included with the optical fiber.
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申请公布号 |
US8345229(B2) |
申请公布日期 |
2013.01.01 |
申请号 |
US20090567853 |
申请日期 |
2009.09.28 |
申请人 |
AT&T INTELLECTUAL PROPERTY I, L.P.;HUFFMAN JOHN SINCLAIR |
发明人 |
HUFFMAN JOHN SINCLAIR |
分类号 |
G01N21/00;G01J1/04;G01J1/42;G01J5/08;G02B6/00;G08B13/00 |
主分类号 |
G01N21/00 |
代理机构 |
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