METHOD FOR CONNECTING MULTI-CORE FIBER, MULTI-CORE FIBER, AND METHOD FOR MANUFACTURING MULTI-CORE FIBER

摘要

A multicore fiber 1 includes a plurality of cores 3 disposed at predetermined intervals and surrounded by a cladding 5. The multicore fiber 1 also includes a marker 7 formed apart from the cores 3. The refractive index of the marker 7 is different from those of the cores 3 and the cladding 5. For example, the marker 7 may be made of a material having lower refractive index than that of the cladding 5. In this case, for example, the cores 3 may be made of germanium-doped quartz. The cladding 5 may be made of pure quartz. The marker 7 may be made of fluorine-doped quartz. Further, the marker 7 may be an empty hole.

主权项

1. A method for fusion splicing a multicore fiber in which at least one of objects to be spliced together is a multicore fiber including a plurality of core portions, a cladding portion surrounding the plurality of core portions, and a marker portion disposed apart from the plurality of core portions, the method comprising:
disposing the multicore fiber to face an object to be spliced that includes a marker corresponding to the marker portion; determining a position of each of the core portions of the multicore fiber by use of the marker portion, and conducting rotation core alignment of the position with a position of a desired core portion of the object to be spliced; and fusing the multicore fiber with the object to be spliced.