Patent ID: 8433160

Claim:
A measurement device comprising: a fastener for use in attaching a first member to a second member, the fastener having an aperture extending through a length of the fastener; a first optical fiber located within the aperture, the first optical fiber including at least one fiber Bragg grating sensor; wherein at least a portion of the first optical fiber is secured within the aperture; wherein a first end of the first optical fiber can be connected to an associated first optical connector and a second end of the first optical fiber can be connected to an associated second optical connector; wherein the first end of the first optical fiber is secured near a first end of the aperture and the second end of the first optical fiber is secured near a second end of the aperture and at least portion of the first optical fiber between the first and second ends of the first optical fiber is unsecured relative to the aperture; a first optical connector attached to the first end of the first optical fiber, wherein the first optical connector secures the first end of the first optical fiber; a second optical connector attached to the second end of the first optical fiber, wherein the second optical connector secures the second end of the first optical fiber; and wherein substantially a full length of at least one of the first optical connector and the second optical connector is located within the aperture.