3D printed long period gratings and their applications as high sensitivity shear-strain and torsion sensors | Zendy

Ricardo Oliveira | Zendy; Rogério N. Nogueira | Zendy; Lúcia Bilro | Zendy

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3D printed long period gratings and their applications as high sensitivity shear-strain and torsion sensors

Author(s) -

Ricardo Oliveira,

Rogério N. Nogueira,

Lúcia Bilro

Publication year - 2021

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.427387

Subject(s) - materials science , torsion (gastropod) , optics , ranging , demodulation , fiber bragg grating , wavelength , grating , fiber optic sensor , diffraction grating , optoelectronics , optical fiber , physics , telecommunications , medicine , channel (broadcasting) , surgery , computer science

In this work we demonstrate the capability to measure shear-strain and torsion loads by bonding an optical fiber to a 3D printed periodic grooved plate. The device acts as a long period grating where the resonances show loss tunability ranging from ∼0 up to ∼20 dB, achieving sensitivities values for the dip transmission ratio as function of the load of 0.12 /mε and 0.21/deg, for shear-strain and torsion loads ranging from 0-∼8 mε and 1-∼4 deg, respectively. The low wavelength drift allowed us to operate the sensor through intensity demodulation techniques, showing good tracking performance of external stimuli.

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