Off-axis Fiber Bragg Grating Fabricated by Femtosecond Laser Direct Writing for Torsion Sensing
Off-axis Fiber Bragg Grating Fabricated by Femtosecond Laser Direct Writing for Torsion Sensing
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Date
2020
Authors
Carlos Duarte Viveiros
De Almeida,JMMM
Coelho,L
João Miguel Maia
Amorim,VA
Jorge,PAS
Marques,PVS
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Abstract
The precise production of 4.5 µm off-axis first order FBG in an SMF-28e fiber through femtosecond laser direct writing is demonstrated. The off-axis FBG potential as sensing head for torsion sensing was successfully explored. © 2021 The Author(s).