公开(公告)号：US20190391333A1

公开(公告)日：2019-12-26

申请号：US16480852

申请日：2018-01-12

Applicant: TDK Corporation

Inventor： Motohiro NAKAHARA ,  Tetsuo MIYA

IPC: G02B6/26 ,  G02B6/44 ,  G02B6/255

Abstract: An optical coupling device that exhibits high air tightness between a capillary and an optical fiber formed of the same glass material. An optical coupling device according to this disclosure includes: an optical fiber having an end portion being a bare fiber where a part of coating has been removed, metal plating being applied to the bare fiber around an end portion of the remaining coating and a circumference of the coating; a capillary having a through-hole having one end where the end portion of the bare fiber is positioned and the other end where the end portion of the coating of the optical fiber subjected to the metal plating is placed, metal plating being applied to an inner wall surface of the other end of the through-hole; and solder that seals a gap between the optical fiber 11 placed in the other end of the through-hole and an inner wall of the through-hole.

公开(公告)号：US20200049888A1

公开(公告)日：2020-02-13

申请号：US16497001

申请日：2018-02-20

Applicant: TDK Corporation

Inventor： Hiroki HARA ,  Masahiro SHINKAI ,  Takashi KIKUKAWA ,  Masami SASAKI ,  Ryohei FUKUZAKI ,  Motohiro NAKAHARA ,  Tetsuo MIYA ,  Shuji TACHI ,  Koichi ARISHIMA

IPC: G02B6/26 ,  G02B6/42

Abstract: A first disclosure is an optical fiber member equipped with two holding members that hold an optical fiber such that an end surface of the optical fiber is located on one end and a curving portion having a coat of the optical fiber is curved to be extended at another end; the holding members are provided with holding flat portions that sandwich an end portion of the optical fiber where the coat is removed such that the end surface of the optical fiber is located on the one end; at least any of the holding flat portions has an aligning groove to fix a position of the end portion of the optical fiber; the holding member is provided with a curved surface at a position adjacent to the curving portion in the extending direction Dl; and the two holding members are equal in thermal expansion coefficient.

公开(公告)号：US20200041723A1

公开(公告)日：2020-02-06

申请号：US16480287

申请日：2018-01-12

Applicant: TDK Corporation

Inventor： Motohiro NAKAHARA ,  Tetsuo MIYA

IPC: G02B6/26 ,  G02B6/255

Abstract: A device that enables highly efficient optical coupling between an end face of an optical circuit and an optical fiber without using a V-groove substrate. An optical coupling device that includes an optical fiber, a high NA optical waveguide, a mode field conversion portion having a mode field diameter larger than that of an opposite end of the high NA optical waveguide, and a capillary having a through-hole for holding the high NA optical waveguide and the mode field conversion portion, wherein the opposite end of the high NA optical waveguide is placed in the end portion of the through-hole.