首页|Patent Application Titled 'Overlapping Fiber Gratings' Published Online (USPTO 20240019279)
Patent Application Titled 'Overlapping Fiber Gratings' Published Online (USPTO 20240019279)
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According to news reporting originating from Washington, D.C., by NewsRx journalists, a patent application by the inventors Childers, Brooks (Christiansburg, VA, US); Froggatt, Mark E. (Blacksburg, VA, US), filed on September 29, 2023, was made available online on January 18, 2024. No assignee for this patent application has been made. Reporters obtained the following quote from the background information supplied by the inventors: “Optical fibers can be used as distributed optical sensors in many applications, for instance, to measure a physical parameter associated with the optical fiber, such as pressure, temperature, and the two-dimensional or three-dimensional shape of the fiber. Fiber-optic shape sensing is useful, for example, in industrial, recreational, medical, robotic, and other procedures where collocating a portion of a tool with a portion of a shape-sensing optical fiber facilitates determination of the location of the tool. As a further example, collocating a medical tool with a portion of a shape-sensing optical fiber can help facilitate more precise determination of the location of the tool in robotic and non-robotic medical procedures. As a specific medical example, in robotic or other computer-assisted surgery, collocating a surgical tool with a portion of the shape-sensing optical fiber facilitates precise determination of the location of the tool outside or within the patient's body based on the three-dimensional fiber shape. The fiber shape can be computed from the bend, twist, and axial strain along the optical fiber, which, in turn, are determined based on continuous strain measurements along multiple cores of the fiber. For accurate shape determinations, it is not only important to measure the strain accurately, but also to know where along the length of the fiber each strain measurement applies.
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