Method for making a multi-core optical fiber, multi-core preform and multi-core optical fiber made by this method

摘要

The mfr. of a multicore fibre-optic, comprises assembling essentially identical single core fibre-optic pre-formers each made up of a core bar surrounded by an optical sheath, in order to form a multicore preformer; and fiberising the multicore preformer to produce the multicore fibre optic. The assembly operation consists of rendering the single core pre-formers integral with each other by welding them together along all or part of their lines of tangency without inserting the multicore preformer into a retaining tube.