Coupling multicore optic fibre cores to one single core optic fibre

摘要

A multicore optical fibre 5 is connected to a single core of a single core fibre 10 using a first GRIN lens 2 of 0.25 pitch for connecting to the multicore fibre, a second GRIN lens 3 of 0.25 pitch for connecting to the single core fibre and a diffractive optical element 4 connecting optically to both GRIN lenses for splitting incident wavefronts from N different cores into N Ò 1-order wavefront pairs, whereby output from a plurality of cores within the multicore fibre 5 is received by the core of the single core fibre 10.