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Method and apparatus for measuring backward Brillouin scattered light of optical fiber

机译：测量光纤的反向布里渊散射光的方法和装置

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摘要

PPROBLEM TO BE SOLVED: To provide a measurement method of backward Brillouin scattering light frequency spectrum distribution of an optical fiber which can narrow a necessary frequency bandwidth for measuring the backward Brillouin scattering light from the optical fiber to be measured, and can narrow a frequency bandwidth of a light receiving/processing system. PSOLUTION: One of test light from a light source 1 divided into two is incident to the optical fiber 3 to be measured after pulse modulation, and the other is incident to a reference optical fiber 9. The backward Brillouin scattering light from the reference optical fiber 9 and the backward Brillouin scattering light from the optical fiber 3 to be measured are multiplexed and a beat signal is detected. Depending on a detected time, a position of the backward Brillouin scattering light scattered in the optical fiber 3 to be measured is specified, and backward Brillouin scattering light frequency spectrum distribution is measured. PCOPYRIGHT: (C)2009,JPO&INPIT

机译：

要解决的问题：提供一种光纤的反向布里渊散射光频谱分布的测量方法，该方法可以缩小用于测量来自待测光纤的反向布里渊散射光的必要频率带宽，并且可以缩小光接收/处理系统的频率带宽。

解决方案：来自光源1的测试光（一分为二）在脉冲调制后入射到要测量的光纤3，另一个入射到参考光纤9。向后的布里渊散射来自光源1的光。基准光纤9和来自被测光纤3的后向布里渊散射光被多路复用，并检测出拍信号。根据检测时间，确定在被测定光纤3中散射的后方布里渊散射光的位置，并测定后方布里渊散射光频谱分布。

版权：（C）2009，日本特许厅＆INPIT 展开▼

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公开/公告号JP5000443B2

专利类型
公开/公告日2012-08-15

原文格式PDF
申请/专利权人日本電信電話株式会社;
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申请/专利号JP20070250211
发明设计人飯田大輔;伊藤文彦;
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申请日2007-09-26
分类号G01D5/353;G01M11;G01K11/12;G01B11/16;
国家 JP
入库时间 2022-08-21 17:40:59

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