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Acta Optica Sinica, Volume. 37, Issue 12, 1206004(2017)

Michelson-Interferometer-Based All-Fiber Optical Perimeter Security System by Utilizing Binary Rectangular Pulse Phase Modulation

Zhongjie Ren1,2, Ke Cui2、*, Jianxin Li1,2, Rihong Zhu1,2, and Shaokun Deng2,3
Author Affiliations
  • 1 School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
  • 2 Ministry of Industry and Information Technology, Key Laboratory of Advanced Solid Laser, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
  • 3 School of Science, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (15)
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    References (24)
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    Figures & Tables(15)
    Model of Michelson interferometer

    Fig. 1. Model of Michelson interferometer

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    Specific structure of monitoring area

    Fig. 2. Specific structure of monitoring area

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    Principle of phase demodulation

    Fig. 3. Principle of phase demodulation

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    (a) φm(t); (b) φm(t-τ); (c) Δφm; (d) relationship between output light intensity and the reference pulse

    Fig. 4. (a) φm(t); (b) φm(t-τ); (c) Δφm; (d) relationship between output light intensity and the reference pulse

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    Structure of FPGA-based interrogator controller

    Fig. 5. Structure of FPGA-based interrogator controller

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    Principle of time domain LC

    Fig. 6. Principle of time domain LC

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    Overall structure of system prototype

    Fig. 7. Overall structure of system prototype

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    Scheme of data processing

    Fig. 8. Scheme of data processing

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    Photograph of monitoring area

    Fig. 9. Photograph of monitoring area

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    Demodulated signal in normal environment

    Fig. 10. Demodulated signal in normal environment

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    Phase changes under various external disturbances. (a) Kicking; (b) climbing; (c) knocking with iron bar; (d) digging holes

    Fig. 11. Phase changes under various external disturbances. (a) Kicking; (b) climbing; (c) knocking with iron bar; (d) digging holes

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    Phase change under the interference of rains and snows

    Fig. 12. Phase change under the interference of rains and snows

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    Phase signal changes induced by different events

    Fig. 13. Phase signal changes induced by different events

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    NLC changes induced by different events

    Fig. 14. NLC changes induced by different events

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    Monitoring results in 2 min

    Fig. 15. Monitoring results in 2 min

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    Zhongjie Ren, Ke Cui, Jianxin Li, Rihong Zhu, Shaokun Deng. Michelson-Interferometer-Based All-Fiber Optical Perimeter Security System by Utilizing Binary Rectangular Pulse Phase Modulation[J]. Acta Optica Sinica, 2017, 37(12): 1206004

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Jul. 11, 2017

    Accepted: --

    Published Online: Sep. 6, 2018

    The Author Email: Cui Ke (njustcuik@njust.edu.cn)

    DOI:10.3788/AOS201737.1206004

    Topics

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