Method for connecting optical fibers and connection structure of optical fibers

Abstract

A method for connecting optical fibers and a connection structure of optical fibers capable of suppressing axial misalignment between cores in end-to-end connection of optical fibers at least one of which has a clad for a non-circular shape. The method includes: a preparing step of preparing a pair of optical fibers 30, 50 including a first optical fiber 30 having a clad 32 of a non-circular shape and a second optical fiber 50 having a clad 52 of a circular shape; a forming step of forming the clad 32 of the first optical fiber 30 at and near one end 35 thereof to have a more circular shape from the non-circular shape; an aligning step of observing in side view the first and second optical fibers 30, 50 and aligning a core 31 of the first optical fiber 30 at and near the one end 35 thereof and a core 51 of the second optical fiber 50 at and near one end 55 thereof in a straight line; and a fusing step of butting the one end 35 of the first optical fiber 30 and the one end 55 of the second optical fiber 50 against each other and fusing the ends together.

Dependencies are inferred from the claim text.