Long-period fiber grating embedded in polymer structure for deformation monitoring

We propose a strain sensor based on a long-period fiber grating (LPFG) packaged in a 3D-printed structure made of polymer material. The proposed sensing structure was fabricated using a commercially available 3D printer by embedding a bare LPFG sensor inside the polymer material during the printing...

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Bibliographic Details
Published inApplied physics. B, Lasers and optics Vol. 127; no. 12
Main Authors Luiz, Renato, Campos, Deivid, de Souza Delgado, Felipe, dos Santos, Alexandre Bessa
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.12.2021
Springer Nature B.V
Subjects
Applied physics
Deformation
Embedded structures
Embedding
Engineering
Gratings (spectra)
Lasers
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Polylactic acid
Polymers
Quantum Optics
Sensors
Spectral sensitivity
Strain analysis
Three dimensional printing
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Summary:We propose a strain sensor based on a long-period fiber grating (LPFG) packaged in a 3D-printed structure made of polymer material. The proposed sensing structure was fabricated using a commercially available 3D printer by embedding a bare LPFG sensor inside the polymer material during the printing process. The raw material used for the fabrication of the polymer structure was Polylactic Acid (PLA). We experimentally investigated the strain-dependent spectral response of the produced sensor by observing the transmitted spectral profile. Finally, the results showed that a linear strain sensitivity of − 4.6 pm/με with the range of 0–1000 με was achieved, therefore indicating that the proposed sensing device is suitable for strain deformation measurement.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-021-07712-8