Angle-Resolved Hollow-Core Fiber-Based Curvature Sensing Approach

We propose and theoretically study a new hollow-core fiber-based curvature sensing approach with the capability of detecting both radius angle. The method relies on tubular-lattice fiber that encompasses, in its microstructure, tubes three different thicknesses. By adequately choosing placement within cross-section, by exploring spectral shifts transmitted spectrum due to curvature-induced mode field distributions’ displacements, we demonstrate multi-axis method. In proposed platform, radii angles are retrieved via suitable calibration routine, which is based conveniently adjusting empirical functions response. Evaluation performance for selected cases allowed be determined percentual errors less than 7%. herein provides promising path accomplishment sensors able resolve