The Hooke's law expresses the relation between the perturbation force and the produced deformation, the proportionality is given by the material elastic constant. The Hooke's law is given by the following expression, along the longitudinal axis of the fiber:The strain coefficient of an optical fibre sensing cable is a critical parameter for a distributed optical fibre sensing system. We demonstrate that C(r) in the fibers drawn from a preform without specific thermal. The fiber mean rupture limit in standard and Boron co-doped photosensitive optical fibers, usually used in fiber Bragg grating based sensors, is also quantify. The optical fiber elements are typically individually coated with plastic layers and contained in a protective tube. The influence of the composition of the cable is also assessed: the sensitivity differences remain under 15%, a standard variation range when different cable compositions and structures are considered.
[PDF Version]