METHOD FOR MANUFACTURING A MICROCONNECTOR FOR OPTICAL FIBRES ON THE SURFACE OF A SUBSTRATE Russian patent published in 2022 - IPC G02B6/42 

FIELD: electronics.

SUBSTANCE: invention relates to photonics, optoelectronics and microfluidics, namely, to nodes of optical or mechanical matching and conjugation of optical fibres or capillaries. Claimed is a method for manufacturing a microconnector for optical fibres on the surface of a substrate, having axial symmetry relative to an axis perpendicular to the substrate, including placing the substrate on a three-dimensional motorised positioner, applying a drop of liquid UV-cured material to the selected area of the substrate, repositioning the substrate in space using the motorised positioner, subjecting the material to the impact of a fine-focused femtosecond laser beam, curing substrates while moving the positioner and forming pylons of the microconnector, the bases whereof on the surface serve as the main ring formed on the surface of the substrate. In order to increase adhesion, the site of formation of the base of the microconnector on the substrate is treated with a fine-focused femtosecond laser beam with a green range wavelength (520 to 535) nm with a power of 10 to 200 MW and a speed of 0.02 to 50 mm/s. The main ring has an inner diameter less than or equal to the outer diameter of the optical fibre, wherein the values of the inner diameter and thicknesses of the main ring are determined based on the condition of matching the apertures of the fibre with the active conjugation sites, the annular base is formed in the form of separate segments, and the pylons retain several rings with an inner diameter of (102.0±1.5)% of the outer diameter of the fibre at different distances from the surface of the substrate, wherein said rings have coupling "chamfers" on the farthermost side from the substrate so as to be able to conveniently pass the end of the optical fibre into the microconnector. Only a scanner or a scanner together with the positioner can be used to move the laser beam relative to the substrate.

EFFECT: increase in the reliability and effectiveness of conjugation of optical fibres.

2 cl, 2 dwg