OPTICAL SENSOR DEVICE, SENSOR APPARATUS, CABLE AND METHOD OF MANUFACTURING

摘要

The invention is directed at an optical sensor device, comprising a sensing element for receiving an input action, an optical fiber comprising an intrinsic fiber optic sensor, and a transmission structure arranged for exerting a sensing action on the optical fiber in response to the input action, wherein the optical fiber is connected to a reference body and to the transmission structure with first and second connecting parts, the first and second connecting parts being located on either side of the intrinsic fiber optic sensor, wherein the transmission structure comprises a bi-stable spring having a first and a second stable deflection position and inbetween a negative stiffness range around an unstable equilibrium position, and wherein the optical fiber is pre-stressed thereby acting as a spring having a first spring constant of positive value to counteract a spring action of the bi-stable spring.