Applying Fiber Bragg Grating for Acoustic Sensor

Paradorn Pakdeevanich; Nattapon Likittananan; Worrapass Promsen

doi:10.15625/0868-3166/29/3/13759

Applying Fiber Bragg Grating for Acoustic Sensor

Paradorn Pakdeevanich, Nattapon Likittananan, Worrapass Promsen

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Authors

Paradorn Pakdeevanich Department of Physics, Faculty of Science , Silpakorn University, Nakorn Prathom, Thailand
Nattapon Likittananan Department of Physics, Faculty of Science , Silpakorn University, Nakorn Prathom, Thailand
Worrapass Promsen Department of Physics, Faculty of Science , Silpakorn University, Nakorn Prathom, Thailand

DOI:

https://doi.org/10.15625/0868-3166/29/3/13759

Keywords:

fiber-optic detection of sound, optical fibre sensors, fiber Bragg grating sensor, sound intensity sensor, acoustic sensor

Abstract

In this work, we interested to utilize Fiber Bragg Grating (FBG) for monitoring sound intensity level. Acoustic disturbance could induce strain and changing the refractive index of FBG. Therefore, light will interfere for the trough of transmission at one specific wavelength satisfied Bragg’s condition. In our demonstrations, FBG sensor was perturbed with sound intensity levels of 60, 80 and 100 dB , the measuring Bragg wavelength were recorded at 1552 nm, 1553 nm and 1555 nm, respectively. It was found that the Bragg wavelength shift has a quite linear variation with sound intensity level. In addition, the sensitivity for sensor was 0.0566 nm/dB. The obtained results are promising for developing acoustic and vibration sensors.

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References

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Published

13-08-2019

How to Cite

[1]

P. Pakdeevanich, N. Likittananan, and W. Promsen, “Applying Fiber Bragg Grating for Acoustic Sensor”, Comm. Phys., vol. 29, no. 3, p. 215, Aug. 2019.

IEEE

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Vol. 29 No. 3 (2019)

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Papers

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