公开(公告)号：US20210373246A1

公开(公告)日：2021-12-02

申请号：US17286601

申请日：2019-07-11

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Ryota KAKEI ,  Shin KATO ,  Fumitsugu FUKUYO ,  Tomoya NAKAZAWA ,  Masaru SHIMOMAKI ,  Shinichi OHBA ,  Yu MATSUSHIRO

IPC: G02B6/38 ,  G02F1/35 ,  G02F1/365

Abstract: A fiber structure includes first and second optical fibers disposed such that end portions thereof butt, a sheet-shaped saturable absorber including a carbon nanotube and disposed between the end portion of the first optical fiber and the end portion of the second optical fiber, and a housing internally accommodating the end portion of the first optical fiber and the end portion of the second optical fiber. A space in the housing including the saturable absorber is airtight.

公开(公告)号：US20210376554A1

公开(公告)日：2021-12-02

申请号：US17285246

申请日：2019-07-11

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Ryota KAKEI ,  Shin KATO ,  Masaru SHIMOMAKI ,  Fumitsugu FUKUYO ,  Tomoya NAKAZAWA ,  Yu MATSUSHIRO

IPC: H01S3/11 ,  H01S3/067 ,  H01S3/00 ,  G02F1/365 ,  H01S3/0941 ,  H01S3/094

Abstract: A fiber structure includes first and second optical fibers disposed such that tip portions thereof butt and a sheet-shaped saturable absorber sandwiched between the tip portion of the first optical fiber and the tip portion of the second optical fiber. Each of the tip portions of the first optical fiber and the second optical fiber has a core, a cladding provided around the core, and a ferrule provided around the cladding. The tip portion of the first optical fiber has a protruding shape protruding to a tip side. The saturable absorber has an adhering part at least adhering to the core of the first optical fiber and a non-adhering part present around the adhering part and not adhering to the tip portion of the first optical fiber.