Patent ID: 8514409

Claim:
A system for monitoring a relative displacement of a pair of end-winding components, said system comprising: a structure mounted to the pair of end-winding components such that the structure is oriented at an angle with respect to the pair of end-winding components for monitoring the relative displacement; an optical fiber with a first portion including a fiber Bragg grating, said first portion mounted to a surface of the structure, said fiber Bragg grating configured to experience a strain resulting from a strain of the structure due to the relative displacement of the pair of end-winding components; the optical fiber including a second portion internally routed in the structure to the first portion mounted to the surface; wherein the structure is configured so that the strain produced by the structure limits a magnitude of the strain of the fiber Bragg grating within a predetermined range over a span of the relative displacement of the pair of end-winding components.