Acta Optica Sinica, Volume. 23, Issue 10, 1196(2003)
Study on Strain Measurement Using Dynamic Demodulation Technique with Two Fiber Gratings
Based on dynamic demodulation technique, a method of strain measurement using two fiber Bragg gratings is reported. The shift of reflective wavelength of one FBG under external strain is translated into a change in time interval of the optical pulse from another FBG drived by a PZT plate. Experiment demonstrates that the measurement accuracy can reach 2.5 mN with the range of 0~40 N.
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[in Chinese], [in Chinese], [in Chinese]. Study on Strain Measurement Using Dynamic Demodulation Technique with Two Fiber Gratings[J]. Acta Optica Sinica, 2003, 23(10): 1196