公开(公告)号：US11747564B2

公开(公告)日：2023-09-05

申请号：US17762252

申请日：2019-10-02

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Takui Uematsu ,  Hidenobu Hirota ,  Hiroyuki Iida ,  Takashi Ebine

IPC: G02B6/28

CPC classification number: G02B6/2826

Abstract: A manufacturing method of an optical splitter of the present disclosure includes: performing first processing that involves mounting a coated optical fiber on a jig configured to store the coated optical fiber, and polishing the coated optical fiber together with the jig until reaching a vicinity of a core of the coated optical fiber or the core of the coated optical fiber; performing second processing that involves applying a refractive index matching material having a refractive index lower than a refractive index of the core of the coated optical fiber onto a polished face of the coated optical fiber on the jig polished in the first processing or onto a polished face of an optical waveguide circuit having been polished in advance until reaching a vicinity of a core or reaching the core, and then bonding the polished faces to each other; and performing third processing that involves positionally aligning the polished faces bonded with each other in the second processing to move the jig or the optical waveguide circuit to a position at which a desired splitting ratio is obtained.