Characteristics of human voice vibrations based on FBG strains

Authors

  • Saktioto Saktioto Department of Physics, Universitas Riau, Pekanbaru 28293, Indonesia
  • Rani Nurpadilla Department of Physics, Universitas Riau, Pekanbaru 28293, Indonesia
  • Bunga Meyzia Department of Physics, Universitas Riau, Pekanbaru 28293, Indonesia
  • Haryana Mohd Hairi Department of Physics, Universiti Teknologi MARA, Shah Alam 40450, Malaysia
  • Mohammed M Fadhali Department of Physics, Jazan University, Jazan 45142, Saudi Arabia \\ Department of Physics, Ibb University, Ibb 70270, Yemen
  • Preecha Yupapin Department of Electrical Technology, IVNE - Region 2, Sakon Nakhon 47000, Thailand \\ Computational Optics Research Group, Van Lang University, Ho Chi Minh City 713000, Viet Nam

DOI:

https://doi.org/10.59190/stc.v4i2.257

Keywords:

Chirped FBG, FBG Uniform, Fiber Bragg Grating, Optical Interrogator, Strain

Abstract

FBG is widely developed as a sensor in its application as a sensor, FBG is commonly used either in industry or in clinical applications to measure changes in physical parameters such as pressure, strain, temperature, and corrosion, as well as to monitor the body's heartbeat and breathing. This research uses 2 types of FBG, namely uniform and chirping. The spectrum used is in the range of 1550 nm. Using an optical sensing interrogator as a tool to read wavelength changes as well as input and output with an infrared laser light source. This study aims to analyze the response of FBG sensors to human voice vibrations with variations in the intensity of sound violence. The results showed that at a hardness intensity of 60 dB using a uniform FBG with a reflectivity of 10% experienced a wavelength change of -0.0304 nm, at an intensity of 70 dB 0.0304 nm, and an intensity of 80 dB experienced many wavelength changes 0.06669 nm. The greater the intensity of the sound, the more FBG response shows an increase in wavelength. The largest strain value detected by the uniform FBG with 10% reflectivity is at 70 dB intensity of 5.5579 × 10-5 strain while the lowest value is at 80 dB intensity of 4.4816 × 10-5 strain. The chirping FBG with 10% reflectivity has the highest strain value at 70 dB intensity with a respective strain value of 1.18 × 10-4 strain. Giving sound vibrations such as some of A, I, U, E, and O to FBG is useful for calculating how the transmission peak of FBG shifts due to strain. When the object emits sound vibrations with a certain intensity, the pressure that occurs will be more than the object when it is at rest, so the greater the sound vibration, the greater the strain that occurs.

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Published

2024-02-29

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