MICROSTRUCTURED MULTICORE OPTICAL FIBRE (MMOF), A DEVICE AND THE FABRICATION METHOD OF A DEVICE FOR INDEPENDENT ADDRESSING OF THE CORES OF MICROSTRUCTURED MULTICORE OPTICAL FIBRE

Microstructured multicore optical fibre with a microstructure area, in which, at least two basic cells are embedded, where each of them contains a core, preferably made of glass, specifically including doped silica glass or polymer, together with the surrounding it longitudinal areas with lower refraction index vs. that of the cladding, which areas may adopt the shape of holes, filled with gas, in particular with the air or a fluid or a polymer or spaces of another glass with doping allowing to reduce refractive index(further referred to as holes), embedded in a matrix of glass, in particular of silica glass or polymer. The refraction index of the holes is decreased vs. that of the matrix of glass, in particular of silica glass or polymer. The basic cell is characterised by the diameter of D2 core, the diameter of D3 core and the distance between adjacent holes, corresponding to lattice constant Λ. The centres of the holes are localised on the vertices and the middle points of the sides of the hexagon, the centre of which is designated by the core; the length of side c of the hexagon, created by the centres of holes, is equal to the preferably doubled lattice constant Λ. The juxtaposed, at least, two basic cells are surrounded by the cladding, preferably made of glass, in particular of silica glass or polymer. Device for addressing cores of the multicore optical fibre, characteristic in that it contains single-core, single-mode optical fibres, with parallel layout in the capillary, (further referred to as single-mode optical fibres), in the number, corresponding to the number of the cores of the multicore optical fibre, while the capillary with single-mode optical fibres is connected with the multicore optical fibre, e.g., the microstructured optical fibre, according to this invention, while the cross-sections of the optical fibres in the capillary and the cross- section of the multicore optical fibre are parallel in their configuration. The fabrication method of the device for addressing cores consists in: 1. an analysis of the structure of multicore optical fibre and determination of the number of cores of the multicore optical fibre, the diameter of cores and the distances among them, 2. measurement of the diameters of the cores and of the claddings of single-mode optical fibres, with which the multicore optical fibre is connected, and the scale of tapering of the single-mode optical fibres is deteremined, 3. removal of the cladding of single-mode optic