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公开(公告)号:EP3207340A1
公开(公告)日:2017-08-23
申请号:EP15851417.4
申请日:2015-09-02
发明人: WANG, Ting , WENG, Yi
摘要: Methods and systems for sensing conditions of a fiber include splitting a light signal into two branches. A first branch is converted to have a mode different from that of the second branch. Both branches are mode multiplexed into a single fiber. An output of the fiber is mode demultiplexed into the two branches. The first branch is mode converted to its original mode. Brillouin scattering patterns of the two branches are compared to determine a temperature and strain profile of the fiber.
摘要翻译: 用于感测光纤状况的方法和系统包括将光信号分成两个分支。 第一个分支转换为与第二个分支不同的模式。 两个分支都模式复用为一根光纤。 光纤的输出被模式解复用为两个分支。 第一个分支是模式转换为其原始模式。 比较两个分支的布里渊散射图案以确定纤维的温度和应变分布。