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Volume 26 Issue 2
Sep.  2013
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Article Navigation >  LASER TECHNOLOGY  > 2002 >  26(2): 84-85,96

Citation:
shu

Study on the reflected wavelength shift based on sensing elements of in-fiber Bragg gratings

  • 1.

    Department of Precision Instruments, State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing, 100084

  • Received Date: 2001-03-06
    Accepted Date: 2001-06-11
  • A new method is presented to detect the wavelength shift on in fiber Bragg gratings.The system employs a series of in fiber Bragg gratings,having the same parameters as the sensing in fiber Bragg gratings,as filter elements.Furthermore,the system tracks the maximum wavelength of the reflected spectrum of in fiber Bragg gratings through dithering and doubling the frequency.A grating with high sensitivity is used to read the output of the system.The non linearity and hysteresis of PZT have been erased thoroughly,so the accuracy of the system is improved a lot.
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    Rao Y J.Meas Sci Technol,1997,8:355～375.
    [2] 鲍吉龙,章献民, 陈抗生 et al.激光技术,2000,24(3):174～179.
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    Zhang W G,Dong X Y,Feng D J et al.Electron Lett,2000,36(20):28.
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    Kersey A D,Berkoff T A,Morey W W.Opt Lett,1993,18(16):15.
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    Jackson D A,Ribeiro A B L,Reekie L et al.Opt Lett,1993,18(14):15.
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Study on the reflected wavelength shift based on sensing elements of in-fiber Bragg gratings

  • 1. Department of Precision Instruments, State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing, 100084
  • Received Date: 2001-03-06
  • Accepted Date: 2001-06-11
  • Available Online: 2002-03-25

Abstract: A new method is presented to detect the wavelength shift on in fiber Bragg gratings.The system employs a series of in fiber Bragg gratings,having the same parameters as the sensing in fiber Bragg gratings,as filter elements.Furthermore,the system tracks the maximum wavelength of the reflected spectrum of in fiber Bragg gratings through dithering and doubling the frequency.A grating with high sensitivity is used to read the output of the system.The non linearity and hysteresis of PZT have been erased thoroughly,so the accuracy of the system is improved a lot.

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