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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 7,
  • Issue 7,
  • pp. 556-559
  • (2009)

Experimental study on vibration frequency response of micro-bend optic-fiber sensor

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Abstract

We make an experimental study on vibration frequency response of micro-bend optic-fiber sensor, and single-mode fibers and multi-mode fibers are used as the sensitive optic-fibers. Contrast between the two sensitive fibers is presented. Result shows that the micro-bend optic-fiber sensor has good frequency response characteristics and strong ability to restore the waveform. With the frequency varying in the range of 500-4762 Hz, the vibration sensors using multi-mode optic-fiber as the sensitive fiber is more sensitive than that using single-mode optic-fiber. And the former has better frequency response characteristics and stronger capacity of waveform revivification. But with the frequency in the range of 287-500 Hz, the latter is better.

© 2009 Chinese Optics Letters

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