High-Precision Static Strain Field Measurement Based on Dense Fiber Bragg Grating Array

We have achieved precise static strain field measurement and applied for 2D shape sensing by using DFBG array with 20 different wavelengths. The accuracy was high with
$\boldsymbol{0.83}\ \boldsymbol{\mu}\boldsymbol{\varepsilon}$
strain sensing and 0.2% reconstruction error.