• Chinese Journal of Lasers
  • Vol. 39, Issue 4, 405002 (2012)
Zhang Pengbo*, Hu Liaolin, Hua Dengxin, and Gong Xin
Author Affiliations
  • [in Chinese]
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    DOI: 10.3788/cjl201239.0405002 Cite this Article Set citation alerts
    Zhang Pengbo, Hu Liaolin, Hua Dengxin, Gong Xin. Design of Dual Lasers Driving Circuits in Optical Time Domain Reflectometry-Fiber Bragg Grating Sensing System[J]. Chinese Journal of Lasers, 2012, 39(4): 405002 Copy Citation Text show less

    Abstract

    To expand the range of strain measurement, a new method is proposed by using two distributed feedback (DFB) lasers as light source of optical time domain reflectometry-fiber Bragg grating (OTDR-FBG) sensing system. The corresponding nanosecond pulse driving circuits and the temperature control circuits are also designed. The driving pulse widths of two lasers are 3.10 ns and 3.18 ns, and the pulse amplitudes are 4.40 V and 4.08 V, respectively. The temperature control circuits have the accuracy of ±0.04 ℃. According to the measurement, the nanosecond pulses and temperature control accuracy can meet the requirements of OTDR-FBG sensor system.
    Zhang Pengbo, Hu Liaolin, Hua Dengxin, Gong Xin. Design of Dual Lasers Driving Circuits in Optical Time Domain Reflectometry-Fiber Bragg Grating Sensing System[J]. Chinese Journal of Lasers, 2012, 39(4): 405002
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