Abstract: The invention relates to an optical fiber sensing device (9), comprising a base (1), an actuator (3) having an actuator axis (X), an elastic hinge (2) connecting the actuator to the base, allowing the actuator to move or deflect in a movement plane (D) with respect to the base, a pair of optical fiber portions (4) extending in the movement plane, contacting the actuator in a pair of contacting positions (11), wherein the actuator (3) comprises a symmetry plane (S), wherein the pair of optical fiber portions (4) are symmetrically arranged with respect to the symmetry plane, such that the movement of the actuator causes a proportional or equal change in strain in the optical fiber portions (4).

Abstract: The invention relates to an optical fiber sensing device (9), comprising a base (1), an actuator (3) having an actuator axis (X), an elastic hinge (2) connecting the actuator to the base, allowing the actuator to move or deflect in a movement plane (D) with respect to the base, a pair of optical fiber portions (4) extending in the movement plane, contacting the actuator in a pair of contacting positions (11), wherein the actuator (3) comprises a symmetry plane (S), wherein the pair of optical fiber portions (4) are symmetrically arranged with respect to the symmetry plane, such that the movement of the actuator causes a proportional or equal change in strain in the optical fiber portions (4).

Abstract: The invention relates to an optical fiber sensing device (1) for sensing the distribution of the compression/deformation of a compressible/deformable element (2), comprising: an incompressible/undeformable tubular element (3) with a recess (4) extending in a length direction (X) thereof, the recess being enclosed by the tubular element, an optical fiber (5) arranged in the recess, comprising one or more light distortion structures (6), and being expandable in the length direction of the recess, one or more expandable elements (8), having a higher compressibility/deformability than the tubular element in a transverse direction (Y), arranged at one or both ends (9) of the tubular element, the optical fiber being enclosed in the expandable elements, which are arranged for expanding/contracting in the length direction, along with the optical fiber, when the expandable elements are subjected to a transverse load (F).

Abstract: The invention relates to an optical fiber sensing device (1) for sensing the distribution of the compression/deformation of a compressible/deformable element (2), comprising: an incompressible/undeformable tubular element (3) with a recess (4) extending in a length direction (X) thereof, the recess being enclosed by the tubular element, an optical fiber (5) arranged in the recess, comprising one or more light distortion structures (6), and being expandable in the length direction of the recess, one or more expandable elements (8), having a higher compressibility/deformability than the tubular element in a transverse direction (Y), arranged at one or both ends (9) of the tubular element, the optical fiber being enclosed in the expandable elements, which are arranged for expanding/contracting in the length direction, along with the optical fiber, when the expandable elements are subjected to a transverse load (F).