Laser & Optoelectronics Progress, Volume. 55, Issue 3, 030602(2018)

Central Wavelength Interrogation Method of Ultra-Short FBG by Dual-Wavelength Laser

Kai Li1,2,3, Jingtao Xin1,2,3, Fei Luo1,2,3, Xiaoping Lou1,2,3, and Lianqing Zhu1,2,3、*
Author Affiliations
  • 1 Beijing Engineering Research Center of Optoelectronic Information and Instruments, Beijing Information Science and Technology University, Beijing 100016, China
  • 2 Key Laboratory of Modern Measurement Control Technology, Ministry of Education, Beijing 100192, China
  • 3 Beijing Key Laboratory of Optoelectronic Test Technology, Beijing Information Science and Technology University, Beijing 100192, China
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    Figures & Tables(8)
    Reflective of FBGs. (a) Different grating lengths; (b) different refractive index modulation depths
    Schematic of interrogation by single-wavelength laser
    Schematic of interrogation by dual-wavelength laser
    Schematic of interrogation experimental setup by dual-wavelength laser
    Reflection spectra of US-FBG. (a) Different kinds of fibers; (b) different lengths of grating region
    Analysis of linearization data on both sides of US-FBG reflection spectra
    (a) Relationship between P1 and the central wavelength of US-FBG; (b) relationship between P2 and the central wavelength of US-FBG
    Experimental results and theoretical values of US-FBG central wavelength
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    Kai Li, Jingtao Xin, Fei Luo, Xiaoping Lou, Lianqing Zhu. Central Wavelength Interrogation Method of Ultra-Short FBG by Dual-Wavelength Laser[J]. Laser & Optoelectronics Progress, 2018, 55(3): 030602

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Aug. 25, 2017

    Accepted: --

    Published Online: Sep. 10, 2018

    The Author Email: Zhu Lianqing (zhulianqing@sina.com)

    DOI:10.3788/LOP55.030602

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