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Fast distributed Brillouin optical fiber sensing based on pump frequency modulation

机译:基于泵浦频率调制的快速分布式布里渊光纤传感

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We present a fast distributed Brillouin optical fiber sensor based on pump frequency modulation. The frequency shift of the probe is fixed, while the pump is fast scanned using an arbitrary waveform generator (AWG). Thus, the bandwidth requirement of the AWG is reduced to several hundred megahertz without any expense to the acquiring speed. Combining with differential pulse width pair (DPP) technology, a vibration measurement is implemented in a 230-m polarization-maintaining fiber with a sampling rate of 2.6 kHz and 50 cm spatial resolution. A vibration signal up to 31 Hz is identified successfully with a strain resolution of 15 mu epsilon. (C) 2018 The Japan Society of Applied Physics
机译:我们提出了一种基于泵浦频率调制的快速分布式布里渊光纤传感器。探头的频移是固定的,同时使用任意波形发生器(AWG)快速扫描泵。因此,AWG的带宽需求减少到几百兆赫兹,而没有任何获取速度上的花费。结合差分脉冲宽度对(DPP)技术,在230 m保偏光纤中以2.6 kHz的采样率和50 cm的空间分辨率进行振动测量。成功识别出高达31 Hz的振动信号,其应变分辨率为15μepsilon。 (C)2018日本应用物理学会

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  • 来源
    《Applied physics express》 |2018年第7期|072502.1-072502.4|共4页
  • 作者单位

    Chongqing Univ, Key Lab Optoelect Technol & Syst, Minist Educ, Chongqing 400044, Peoples R China;

    Chongqing Univ, Key Lab Optoelect Technol & Syst, Minist Educ, Chongqing 400044, Peoples R China;

    Chongqing Univ, Key Lab Optoelect Technol & Syst, Minist Educ, Chongqing 400044, Peoples R China;

    Chongqing Univ, Key Lab Optoelect Technol & Syst, Minist Educ, Chongqing 400044, Peoples R China;

    SINOPEC Res Inst Safety Engn, State Key Lab Safety & Control Chem, Qingdao 266000, Peoples R China;

    SINOPEC Res Inst Safety Engn, State Key Lab Safety & Control Chem, Qingdao 266000, Peoples R China;

    SINOPEC Res Inst Safety Engn, State Key Lab Safety & Control Chem, Qingdao 266000, Peoples R China;

    SINOPEC Res Inst Safety Engn, State Key Lab Safety & Control Chem, Qingdao 266000, Peoples R China;

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