Effect of core breakage on measurement symmetry in shape sensing based on optical fiber sensors

We present a study of the behavior of shape sensing applications based on strain sensors and sensing cables based on fiber bundles in the case when one of the sensing core breaks. In particular, we perform Monte Carlo simulations for the estimation of the parameters of a curvature vector (magnitude and bending direction) at different bending angles, showing how, when the core breaks, the accuracy of the measurement is no longer symmetrical, and characterize the accuracy of magnitude and direction of the vector as a function of the bending angle.