公开(公告)号：US09722388B2

公开(公告)日：2017-08-01

申请号：US14976922

申请日：2015-12-21

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Masateru Tadakuma ,  Koichi Maeda ,  Yukihiro Tsuchida ,  Shigehiro Takasaka ,  Ryuichi Sugizaki

IPC: H01S3/067 ,  G02B6/02 ,  H01S3/10 ,  H01S3/094 ,  H01S3/16

CPC classification number: H01S3/06737 ,  G02B6/02042 ,  H01S3/06758 ,  H01S3/06766 ,  H01S3/06783 ,  H01S3/094003 ,  H01S3/094007 ,  H01S3/094019 ,  H01S3/094038 ,  H01S3/094061 ,  H01S3/10023 ,  H01S3/1608 ,  H01S2301/04

Abstract: A multi-core optical amplifying fiber device includes a plurality of multi-core optical amplifying fibers including a plurality of core portions doped with amplification medium and a cladding portion formed at outer peripheries of the plurality of core portions; and a connection portion connecting the core portions of the plurality of multi-core optical amplifying fibers to one another. The connection portion connects the core portions to restrain deviation, between every connected core portions, of amplification gain for a total length of the core portions connected one another.