Study on Strain Measurement Using Dynamic Demodulation Technique with Two Fiber Gratings

[in Chinese]; [in Chinese]; [in Chinese]

Journals >Acta Optica Sinica >Volume 23 >Issue 10 >Page 1196 > Article

Acta Optica Sinica
Vol. 23, Issue 10, 1196 (2003)

Study on Strain Measurement Using Dynamic Demodulation Technique with Two Fiber Gratings

[in Chinese]^*, [in Chinese], and [in Chinese]

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[in Chinese]

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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 Copy Citation Text

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Abstract

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.

Keywords

modulation with PZT sensor dynamic demodulation fiber Bragg grating

[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

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