MULTICORE OPTICAL FIBER AND OPTICAL MODULE

摘要

The present invention relates to an MCF with a structure for enabling an alignment work with higher accuracy. The MCF has a plurality of cores and a cladding. An outer peripheral shape of the cladding in a cross section of the MCF is comprised of a circumferential portion forming a circumference coincident with an outer periphery of the MCF, and a cut portion. The cut portion has a bottom portion and two contact portions provided on both sides of the bottom portion and projecting more than the bottom portion. When a side face of the MCF is viewed, the two contact portions have flattened faces and the flattened faces of the two contact portions extend along a longitudinal direction of the MCF with the bottom portion in between.

主权项

1. A multicore optical fiber comprising a plurality of cores and a cladding surrounding each of the plurality of cores,
wherein an outer peripheral shape of the cladding in a cross section perpendicular to a longitudinal direction of the multicore optical fiber is comprised of a circumferential portion forming a circumference coincident with an outer periphery of the multicore optical fiber in the cross section, and a first cut portion, wherein in the cross section defining the outer peripheral shape of the cladding, the first cut portion has a bottom portion and two contact portions provided on both sides of the bottom portion, each of the two contact portions projecting in a direction away from the plurality of cores more than the bottom portion, and wherein the two contact portions have respective flattened faces, when a side face of the multicore optical fiber is viewed from a direction perpendicular to the longitudinal direction, and the flattened faces of the two contact portions extend along the longitudinal direction with the bottom portion in between.