Patent ID: 9200971
Filing Date: 2015-12-01
Classification: G01D,G01K,G01L

Abstract:
1. A method for measuring one or more mechanical parameters of an object subjected to a force or condition, where at least a curved portion of a multicore optical fiber is attached to the object, the multicore optical fiber having a center core and plural off-center cores, the method comprising: using a distributed, optically-based sensing technique to obtain information at each of multiple points along the curved portion from multiple ones of the cores of the multicore optical fiber; determining a curvature associated with the multicore optical fiber that is attached to the object using the information obtained from multiple ones of the cores of the multicore optical fiber; using a distributed, optically-based, strain sensing technique to obtain strain information for the center core without having to obtain strain information for the off-center cores; determining the one or more mechanical parameters of the object based on the strain information obtained for the center core and the curvature information obtained from the multiple ones of the cores; and generating an output corresponding to a representation of the determined one or more mechanical parameters.