Real-Time Vibration Measurement with Low Reflectance Fiber Bragg Grating Arrays Using High-Speed Wavelength-Swept Laser

Hiroto Kawashima; Tatsuya Yamaguchi; Hiroki Matsuda; Yukitaka Shinoda

doi:10.1364/OFS.2023.Th6.83

28th International Conference on Optical Fiber Sensors
Technical Digest Series (Optica Publishing Group, 2023),
paper Th6.83
•https://doi.org/10.1364/OFS.2023.Th6.83

Real-Time Vibration Measurement with Low Reflectance Fiber Bragg Grating Arrays Using High-Speed Wavelength-Swept Laser

Hiroto Kawashima, Tatsuya Yamaguchi, Hiroki Matsuda, and Yukitaka Shinoda

Optical Fiber Sensors 2023

Naka-ku, Hamamatsu-shi Japan
20–24 November 2023
ISBN: 978-1-957171-30-2

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Poster Session III (Th6)

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H. Kawashima, T. Yamaguchi, H. Matsuda, and Y. Shinoda, "Real-Time Vibration Measurement with Low Reflectance Fiber Bragg Grating Arrays Using High-Speed Wavelength-Swept Laser," in 28th International Conference on Optical Fiber Sensors, Technical Digest Series (Optica Publishing Group, 2023), paper Th6.83.

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Abstract

We developed a real-time vibration measurement system using low-reflectance fiber Bragg-grating (FBG) arrays with a high-speed, wavelength-swept laser whose sweep bandwidth, center wavelength, and sweep rate were 60 nm, 1550 nm, and 50 kHz, respectively. Twenty FBGs were multipointed by combining wavelength-division-multiplexing and time-division-multiplexing using these arrays. Experiments demonstrated the feasibility of real-time vibration measurement with 20 FBGs with a temporal resolution of 10 μs.

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