High-speed and long-time FBG interrogation system using wavelength swept laser

Tatsuya Yamaguchi; Yukitaka Shinoda

doi:10.1117/12.2184539

22 June 2015 High-speed and long-time FBG interrogation system using wavelength swept laser

Tatsuya Yamaguchi, Yukitaka Shinoda

Proceedings Volume 9525, Optical Measurement Systems for Industrial Inspection IX; 95252X (2015) https://doi.org/10.1117/12.2184539
Event: SPIE Optical Metrology, 2015, Munich, Germany

Abstract

The purpose of this research is the development of a system for fabricating high-speed and long-time measurements of wide-band vibration using fiber Bragg gratings (FBGs) to determine the health of structures. We developed a real-time FBG interrogation system using wavelength swept laser. This system can perform real-time measurement of reflected wavelength from a multiple FBG at a temporal resolution of 0.1 ms. The authors also constructed a database system for managing the data obtained from high-speed and long-time measurement. This database system manages data using a relational database and transfers information on FBG reflected wavelengths obtained from this measurement system via the local network. We have demonstrated that this system is able to measure reflected wavelengths from a multipoint FBG at a temporal resolution of 0.1 ms over 24 hours, it was shown that this system could also monitor instantaneously applied high-speed vibrations.

Citation Download Citation

Tatsuya Yamaguchi and Yukitaka Shinoda "High-speed and long-time FBG interrogation system using wavelength swept laser", Proc. SPIE 9525, Optical Measurement Systems for Industrial Inspection IX, 95252X (22 June 2015); https://doi.org/10.1117/12.2184539

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