| 摘要 |
Microstructured optical fibre, composite structure, method and use for measuring shear load in a composite structure. A microstructured optical fibre (MOF), comprising a doped core region (2) embedded in a cladding layer (3), and comprising a plurality of longitudinal tubes, wherein a radial cross-section of the optical fibre comprises a central hexagonal portion (6) comprising a plurality of holes arranged according to a hexagonal grid surrounding a core section, each hole corresponding to a respective tube, within a hexagonal boundary (61-66) of said grid, the plurality of holes comprising holes of a first type (4) and holes of a second type (5) and arranged in a biaxial mirror-symmetric configuration, wherein said holes of said first type are arranged in two side holey structures comprising distinct sub-grids of said hexagonal grid, each of said side holey structures being defined by respective outer boundaries corresponding to portions of said hexagonal boundary of said grid and respective inner boundaries, wherein outer tangential lines (Til, T12) to said respective inner boundaries cross each other at the opposed side of said core with respect to the side of the respective side holey structure. Also claimed is composite structure including this fibre, a method and an use for measuring shear load in a composite structure. |
