High birefringence hollow core fiber and Guangfu techniques to produce a refractive hollow core fiber

摘要

The hollow-core fiber has a cladding that includes a matrix of cells, each cell comprises a hole, and a wall surrounding the hole. The fiber further comprises a hollow core region having a core gap matrix of cells, the core gap, and spans the plurality of cells has a boundary defined by the boundary surface of the core gap. Matrix of cells includes a plurality of grid cells, in at least one characteristic, and a plurality of defective cells that are characterized by at least one difference between properties of the grid cell. Cells in the core region boundary, and so produce a birefringence to the light propagating through the hollow core fiber, including grid cells and defective cells arranged in a pattern defining two orthogonal axes of reflection symmetry.BACKGROUND 4