Sensitive optical fiber shape sensing based on shape-related optical polarization evolution

This patent record discloses fiber sensing techniques and apparatus for shape monitoring by utilizing single- and multi-core optical fiber implementations and optical interferometry. Implementations can be made based on coherent optical time domain reflectometry (OTDR) or optical frequency domain reflectometry (OFDR).

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BACKGROUND

 
Optical fiber can be utilised as optical detectors to perform various sensor operations, e.g., using optical fiber sensing for structural health monitoring in aerospace, automotive, civil engineering structure tracking, undersea oil exploration,biomechanics, and biomedical areas. Optical fiber detectors can be combined to reach one or more benefits, including, e.g. small size, light weight, ease of implementation, high precision, biocompatibility, chemical inertness, multiplexingcapability, and resistance to electromagnetic interference.
 

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