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Chinese Optics Letters, Volume. 14, Issue 12, 120602(2016)

Acoustic emission detection using intensity-modulated DFB fiber laser sensor

Tan Yang1, Ying Song1, Wentao Zhang2、*, and Fang Li2
Author Affiliations
  • 1School of Traffic and Transportation, Shijiazhuang Tiedao University, Shijiazhuang 050043, China
  • 2Optoelectronic System Lab, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
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    Intensity FL AE sensing scheme. ISO, isolator.

    Fig. 1. Intensity FL AE sensing scheme. ISO, isolator.

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    (a) Structure of the bonded DFB-FL sensor. (b) Bonded DFB-FL AE sensor.

    Fig. 2. (a) Structure of the bonded DFB-FL sensor. (b) Bonded DFB-FL AE sensor.

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    Detection of AE waves in an aluminum plate.

    Fig. 3. Detection of AE waves in an aluminum plate.

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    (a) Frequency domain characteristics of the 5 kHz Signal. (b) Time domain characteristics of the 5 kHz AE signal.

    Fig. 4. (a) Frequency domain characteristics of the 5 kHz Signal. (b) Time domain characteristics of the 5 kHz AE signal.

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    Sensitivity response curve of the intensity-type DFB-FL sensor to external AE.

    Fig. 5. Sensitivity response curve of the intensity-type DFB-FL sensor to external AE.

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    (a) Signal of a shocked steel ball by the PZT sensor, (b) Signal of a shocked steel ball by the bonded DFB-FL sensor.

    Fig. 6. (a) Signal of a shocked steel ball by the PZT sensor, (b) Signal of a shocked steel ball by the bonded DFB-FL sensor.

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    Fast Fourier transform of the signal.

    Fig. 7. Fast Fourier transform of the signal.

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    Tan Yang, Ying Song, Wentao Zhang, Fang Li, "Acoustic emission detection using intensity-modulated DFB fiber laser sensor," Chin. Opt. Lett. 14, 120602 (2016)

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Aug. 27, 2016

    Accepted: Oct. 14, 2016

    Published Online: Aug. 2, 2018

    The Author Email: Wentao Zhang (zhangwt@semi.ac.cn)

    DOI:10.3788/COL201614.120602

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology