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Laser & Optoelectronics Progress, Volume. 55, Issue 6, 060601(2018)

Design and Optimization of Optical-Path for Expendable Optical Fiber Ocean Temperature-Depth Sensor

Qiang Zhao1、1; , Shizhe Chen1、1; , Riqing Lü2、2; , Jiming Zhang1、1; , Keke Zhang1、1; , Li Zhang3、3; , and Yuanqiang Ding3、3;
Author Affiliations
  • 1 Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Qingdao, Shandong 266061, China
  • 2 College of Information Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, China
  • 3 Shandong Oceanographic Instrumentation of Science and Technological Center, Qilu University of Technology (Shandong Academy of Sciences), Qingdao, Shandong 266061, China
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    Figures & Tables(5)
    Optical path diagrams of FBG-LPG cascaded structure. (a) Cascade; (b) parallel; (c) splitting with 3 dB coupler; (d) with ISO

    Fig. 1. Optical path diagrams of FBG-LPG cascaded structure. (a) Cascade; (b) parallel; (c) splitting with 3 dB coupler; (d) with ISO

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    Spectra of different optical path structures. (a) Direct demodulation after cascaded; (b) splitting with 3 dB coupler; (c) with ISO

    Fig. 2. Spectra of different optical path structures. (a) Direct demodulation after cascaded; (b) splitting with 3 dB coupler; (c) with ISO

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    Optical path diagram of experiment

    Fig. 3. Optical path diagram of experiment

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    Spectra with different effective reflectivities. (a) 95.0%; (b) 81.8%; (c) 72.5%; (d) 60.4%; (e) 48.8%; (f) 18.5%; (g) 5.0%; (h) 0.4%

    Fig. 4. Spectra with different effective reflectivities. (a) 95.0%; (b) 81.8%; (c) 72.5%; (d) 60.4%; (e) 48.8%; (f) 18.5%; (g) 5.0%; (h) 0.4%

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    Spectral peaks of FBG and LPG with different reflectivities

    Fig. 5. Spectral peaks of FBG and LPG with different reflectivities

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    Qiang Zhao, Shizhe Chen, Riqing Lü, Jiming Zhang, Keke Zhang, Li Zhang, Yuanqiang Ding. Design and Optimization of Optical-Path for Expendable Optical Fiber Ocean Temperature-Depth Sensor[J]. Laser & Optoelectronics Progress, 2018, 55(6): 060601

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Nov. 7, 2017

    Accepted: --

    Published Online: Sep. 11, 2018

    The Author Email: Zhao Qiang (zqhero9494@163.com)

    DOI:10.3788/LOP55.060601

    Topics

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