公开(公告)号：US08149419B2

公开(公告)日：2012-04-03

申请号：US12525287

申请日：2008-02-21

申请人： Xinyu Fan ,  Fumihiko Ito ,  Yusuke Koshikiya

发明人： Xinyu Fan ,  Fumihiko Ito ,  Yusuke Koshikiya

IPC分类号： G01B9/02 ,  G01N21/55

CPC分类号： G01M11/3172

摘要： An object of the invention is to provide an optical reflectometry and an optical reflectometer, in which accurate measurement can be performed irrespective of a measurement distance. In the optical reflectometry and optical reflectometer according to the invention, in which a distribution of backscattered light intensity from a measurement target in an optical propagation direction is measured using Optical Frequency Domain Reflectometry (OFDR), a coherence monitor unit 12 that monitors a coherence property of a frequency sweep light source 1 is provided, and measurement result of a measuring unit 11 is corrected based on the monitor result of the coherence monitor unit 12.

摘要翻译： 本发明的目的是提供光学反射计和光学反射计，其中可以执行精确的测量而不考虑测量距离。 在根据本发明的光学反射测量和光学反射计中，其中使用光频域反射仪（OFDR）测量来自测量目标的在光学传播方向上的反向散射光强度的分布，其中监视相干性能 提供了频率扫描光源1，并且基于相干监视单元12的监视结果来校正测量单元11的测量结果。

公开(公告)号：US08928868B2

公开(公告)日：2015-01-06

申请号：US14119115

申请日：2012-05-31

申请人： Hiroshi Takahashi ,  Fumihiko Ito ,  Xinyu Fan ,  Yusuke Koshikiya

发明人： Hiroshi Takahashi ,  Fumihiko Ito ,  Xinyu Fan ,  Yusuke Koshikiya

IPC分类号： G01N21/00 ,  G01M11/00

CPC分类号： G01M11/3109 ,  G01M11/3136 ,  G01M11/319

摘要： A test pulse is generated from a first and a second test light beam pulse with different wavelengths, with a predetermined time difference applied between the first and the second test light beam pulse. A circulator inputs the test pulse to a trunk fiber of a measurement target fiber line. A reflected light is extracted which is output from an input end of the trunk fiber. A filter extracts stimulated Brillouin backscattered light. A receiver receives and converts the scattered light into an electrical signal. A processing device carries out the signal to determine in which of N branched fibers the stimulated Brillouin scattered light is generated, while varying a time difference between the first and the second test pulse.

摘要翻译： 从具有不同波长的第一和第二测试光束脉冲产生测试脉冲，并且在第一和第二测试光束脉冲之间施加预定的时间差。 循环器将测试脉冲输入到测量目标光纤线路的干线光纤。 提取从躯干光纤的输入端输出的反射光。 滤波器提取受激布里渊背散射光。 接收机接收并将散射光转换成电信号。 处理装置执行信号以确定在哪个N个分支光纤中产生受激布里渊散射光，同时改变第一和第二测试脉冲之间的时间差。

公开(公告)号：US20140098362A1

公开(公告)日：2014-04-10

申请号：US14119115

申请日：2012-05-31

申请人： Hiroshi Takahashi ,  Fumihiko Ito ,  Xinyu Fan ,  Yusuke Koshikiya

发明人： Hiroshi Takahashi ,  Fumihiko Ito ,  Xinyu Fan ,  Yusuke Koshikiya

IPC分类号： G01M11/00

CPC分类号： G01M11/3109 ,  G01M11/3136 ,  G01M11/319

摘要： A test pulse is generated from a first and a second test light beam pulse with different wavelengths, with a predetermined time difference applied between the first and the second test light beam pulse. A circulator inputs the test pulse to a trunk fiber of a measurement target fiber line. A reflected light is extracted which is output from an input end of the trunk fiber. A filter extracts stimulated Brillouin backscattered light. A receiver receives and converts the scattered light into an electrical signal. A processing device carries out the signal to determine in which of N branched fibers the stimulated Brillouin scattered light is generated, while varying a time difference between the first and the second test pulse.

摘要翻译： 从具有不同波长的第一和第二测试光束脉冲产生测试脉冲，并且在第一和第二测试光束脉冲之间施加预定的时间差。 循环器将测试脉冲输入到测量目标光纤线路的干线光纤。 提取从躯干光纤的输入端输出的反射光。 滤波器提取受激布里渊背散射光。 接收机接收并将散射光转换成电信号。 处理装置执行信号以确定在哪个N个分支光纤中产生受激布里渊散射光，同时改变第一和第二测试脉冲之间的时间差。

公开(公告)号：US20100097615A1

公开(公告)日：2010-04-22

申请号：US12525287

申请日：2008-02-21

申请人： Xinyu Fan ,  Fumihiko Ito ,  Yusuke Koshikiya

发明人： Xinyu Fan ,  Fumihiko Ito ,  Yusuke Koshikiya

IPC分类号： G01N21/55 ,  G01B9/02 ,  G06F19/00

CPC分类号： G01M11/3172

摘要： An object of the invention is to provide an optical reflectometry and an optical reflectometer, in which accurate measurement can be performed irrespective of a measurement distance. In the optical reflectometry and optical reflectometer according to the invention, in which a distribution of backscattered light intensity from a measurement target in an optical propagation direction is measured using Optical Frequency Domain Reflectometry (OFDR), a coherence monitor unit 12 that monitors a coherence property of a frequency sweep light source 1 is provided, and measurement result of a measuring unit 11 is corrected based on the monitor result of the coherence monitor unit 12.

摘要翻译： 本发明的目的是提供光学反射计和光学反射计，其中可以执行精确的测量而不考虑测量距离。 在根据本发明的光学反射测量和光学反射计中，其中使用光频域反射仪（OFDR）测量来自测量目标的在光学传播方向上的反向散射光强度的分布，其中监视相干性能 提供了频率扫描光源1，并且基于相干监视单元12的监视结果来校正测量单元11的测量结果。