AI Article Synopsis
- A new type of shape sensor called φ-OFDR was created using optical fibers with a very fine spatial resolution of 200 µm through the use of a laser to create permanent scatter arrays in multicore fiber.
- The design involved inscribing scatter arrays into slightly twisted cores of a 400-mm-long fiber, allowing for detailed shape detection.
- The sensor successfully reconstructed both 2D and 3D shapes with minimal error rates of 2.21% for 2D shapes and 1.45% for 3D shapes, making it a promising tool for precise shape measurement.
Article Abstract
An optical fiber φ-OFDR shape sensor with a submillimeter spatial resolution of 200 µm was demonstrated by using femtosecond-laser-induced permanent scatter array (PS array) multicore fiber (MCF). A PS array was successfully inscribed in each slightly twisted core of the 400-mm-long MCF. The two-dimensional (2D) and three-dimensional (3D) shapes of the PS-array-inscribed MCF were successfully reconstructed by using PS-assisted φ-OFDR, vector projections, and the Bishop frame based on the PS-array-inscribed MCF. The minimum reconstruction error per unit length of the 2D and 3D shape sensor was 2.21% and 1.45%, respectively.
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| http://dx.doi.org/10.1364/OL.486644 | DOI Listing |
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