Microstructured optical fibre with 16 linearly arrayed antiguided cores fabricated through stacking

A microstructured optical fibre with a linear-array of 16 antiguided cores was fabricated using the stacking technique. Coherent near-field guidance was observed in a 20 cm-long straight fibre. Proposals are made for achieving high-power laser output in this new type of antiguided multicore fibre on the basis of sensitivity to bending.