公开(公告)号：US20200271856A1

公开(公告)日：2020-08-27

申请号：US16790859

申请日：2020-02-14

Applicant: AGC Inc.

Inventor： Kenta KOBAYASHI ,  Shotaro TAKENOBU

IPC: G02B6/02

Abstract: The present invention provides a polymer optical waveguide containing a core and a cladding having a refractive index lower than that of the core, in which each of the core and the cladding is a cured product of a curable composition cured by light irradiation, and the cladding has an absorbance of 0.23 or low per 50 μm of film thickness at a wavelength of 365 nm.

公开(公告)号：US20200183081A1

公开(公告)日：2020-06-11

申请号：US16787158

申请日：2020-02-11

Applicant: AGC Inc.

Inventor： Shotaro TAKENOBU ,  Toshihisa OKADA ,  Satoko NOMA ,  Kenta KOBAYASHI ,  Keisuke HANASHIMA ,  Seiki OHARA

IPC: G02B6/02 ,  G02B6/26 ,  G02B6/42

Abstract: The present invention provides a polymer optical waveguide containing: a core; and a cladding having a refractive index lower than that of the core, provided around the core, in which the polymer optical waveguide has a core-coupling section where at least a part of the cladding is not present along a light propagation direction of the polymer optical waveguide and an application type removal film A provided so as to come into contact with the core of the core-coupling section.

公开(公告)号：US20190107674A1

公开(公告)日：2019-04-11

申请号：US16203983

申请日：2018-11-29

Applicant: AGC INC.

Inventor： Seiki OHARA ,  Kenta KOBAYASHI ,  Shotaro TAKENOBU

IPC: G02B6/122

Abstract: Provided is a resin optical waveguide containing a core, under cladding and over cladding, in which the resin optical waveguide has portions having a core width varying along a light propagation direction, the maximum core width is 4 to 10 μm, and the minimum core width of 1 μm or more and less than 4 μm, when the length of a portion S at which the core width is 1 μm or more and less than 4μm is LS and the length of a portion at which the core width is 4 to 10 μm is LL, the proportion of LS to the total length is 0.1 to 40%, and the portion S contains neither a certain bubble defect nor a certain defect inside the core and in a vicinity of a core-cladding interface.

公开(公告)号：US20220057574A1

公开(公告)日：2022-02-24

申请号：US17453906

申请日：2021-11-08

Applicant: AGC Inc.

Inventor： Naoya WADA ,  Shotaro TAKENOBU ,  Kenta KOBAYASHI ,  Seiki OHARA

IPC: G02B6/122 ,  G02B6/02

Abstract: The present invention provides a polymer optical waveguide having a core, an under cladding and an over cladding, in which: the polymer optical waveguide has a first section on one end side in the light propagation direction where no portion of the over cladding exists and the core and the under cladding are exposed, and a second section on the other end side in the light propagation direction where the core is covered with the under cladding and the over cladding; and a relative refractive index difference among the core, the under cladding and the over cladding, a core width and core height in an end surface at the one end side of the first section, and a core width and core height in an end surface at the other end side of the second section satisfy predetermined relationships.