At least one sensing region is formed on the bending sensor by providing a flexurally elastic base cover which is interrupted in at least one partial region of the sensing region or is structured using elevations and/or depressions. At least one planar optical fiber core is generated on the base cover. The optical fiber core has a greater index of refraction than the base cover. The optical fiber core is covered by a shroud. The optical fiber core has a greater index of refraction than the shroud.