Visible radiation-induced connection of single-mode IR fibres in a photopolymerising composition

The properties of the optical connection of single-mode fibres by laser beams counterpropagating from the ends of these fibres are considered numerically and experimentally. It is shown that effective connection of single-mode fibres at the wavelength of 1.55 mu m is possible during self-channelling and interaction of optical beams at 0.63 mu m in a photopolymerising medium. In this case, the long exposure can lead to a decrease in the transmission coefficient, especially when the ends of the fibres being connected are positioned off-axially. It is obtained experimentally that for the 1-2-mm-long polymer connector and the similar to 15-mu m radial displacement, the efficiency of the optical connection of the SMF-28 and CS-980 single-mode fibres in a OCM-2 photopolymerising composition can achieve 80%-90% and 50%-60%, respectively.