Fast Interrogation Method Based on Two Superimposed Fiber Bragg Gratings

You Chun Ma; Chang Jang Wang; Yuan Hong Yang; Jin Ming Li

doi:10.4028/www.scientific.net/AMM.325-326.712

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 325-326Fast Interrogation Method Based on Two...

Fast Interrogation Method Based on Two Superimposed Fiber Bragg Gratings

Abstract:

A fast interrogation method based on two Superimposed Fiber Bragg Gratings (SI-FBGs) is researched. The two SI-FBGs under100Hz dynamic sinusoidal strain with linear triple driving voltage and 500Hz FFP-TF scanning frequency with 20nm wavelength range is simulated based on transfer matrix. A four times increase in the interrogation speed of dynamic strain, by generating a 2kHz optical sensing pulse train from a 500Hz scanning frequency, is demonstrated experimentally. The simulation and experimental results show that the interrogation speed can be increased by times with more SI-FBGs used.

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Periodical:

Applied Mechanics and Materials (Volumes 325-326)

Pages:

712-715

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.325-326.712

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Online since:

June 2013

Authors:

You Chun Ma, Chang Jang Wang, Yuan Hong Yang, Jin Ming Li

Keywords:

Dynamic Strain, Interrogation, Superimposed Fiber Bragg Gratings

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