{
  "abstract": "An FBG curvature sensing test device and a test method thereof are provided. The test device includes a test platform, an FBG demodulator, and a computer. The test platform includes an optical plate and two constraint components, test pieces are connected between two constraint components, where the constraint component includes an X-axis displacement stage, a Z-axis rotation stage and a fixture, the X-axis displacement stage is connected to the optical plate and can move along an X-axis direction, one end of the Z-axis rotation stage is connected to the X-axis displacement stage, and the other end of the Z-axis rotation stage is connected to the fixture; the FBG demodulator is configured to convert an optical signal of a wavelength change monitored by the FBG test line based on the deformation of the test piece into an electrical signal; the computer is coupled to the FBG demodulator.",
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  "published_at": "2026-09-15T19:02:48.795213Z",
  "publisher": "Nebula Innovations Limited",
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  "source_date": "2026-04-21",
  "source_id": "US-12607458-B2",
  "source_name": "the United States Patent and Trademark Office",
  "source_url": "https://patents.google.com/patent/US12607458B2",
  "supersedes": null,
  "title": "Fiber Bragg grating curvature sensing test device and test method thereof",
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