On the efficiency of optical joining of fibres in a photopolymerisable composition

The efficiency of using nonlinear optical wave processes in photopolymerisable media for joining graded-index fibres is studied by simulations and experimentally. The influence of the mode structure of fibres, parameters of a medium and the geometry of a connector produced directly by radiation on its transfer coefficient is determined. The optical joining of multimode fibres at a distance of up to 3 mm and their axial displacement up to 150 μm is experimentally realised with energy losses less than 5%.