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.

公开(公告)号：US20190204503A1

公开(公告)日：2019-07-04

申请号：US16292375

申请日：2019-03-05

Applicant: AGC Inc.

Inventor： Seiki OHARA ,  Shotaro TAKENOBU

IPC: G02B6/02 ,  G02B6/26 ,  G02B6/122

Abstract: The present invention relates to a resin optical waveguide including a core and a cladding having a refractive index lower than that of the core, in which the resin optical waveguide includes, along a light propagation direction, a coupling part at which at least a part of the core is exposed and an optical waveguide part where the whole circumference of the core is covered with the cladding, and the core has a width Wb at an end part of the coupling part at a side of the optical waveguide part being larger than a width Wa of the core at an end part of the coupling part at a side opposite to the optical waveguide part.

公开(公告)号：US20190025519A1

公开(公告)日：2019-01-24

申请号：US16131851

申请日：2018-09-14

Applicant: AGC INC.

Inventor： Toshihisa OKADA ,  Seiki OHARA ,  Shotaro TAKENOBU ,  Satoko NOMA

IPC: G02B6/30 ,  G02B6/138 ,  G02B6/122

CPC classification number: G02B6/30 ,  G02B6/12 ,  G02B6/1223 ,  G02B6/138 ,  G02B6/26

Abstract: The present invention relates to a composite optical waveguide (1) containing a polymer optical waveguide and a silicon optical waveguide adiabatically coupled to each other, in which the polymer optical waveguide and the silicon optical waveguide are coupled to each other by an adhesive layer in an adiabatic-coupling portion where a core of the polymer optical waveguide and a core of the silicon optical waveguide are disposed to face each other, the adhesive layer is formed by using a photocurable adhesive having a glass transition point Tg being 125° C. or higher after curing, and the adiabatic-coupling portion includes a region in which a spacing t between the core of the polymer optical waveguide and the silicon optical waveguide is 1.5 μm or less.

公开(公告)号：US20210003780A1

公开(公告)日：2021-01-07

申请号：US17026497

申请日：2020-09-21

Applicant: AGC Inc.

Inventor： Seiki OHARA ,  Shotaro TAKENOBU ,  Naoya WADA

IPC: G02B6/26

Abstract: The present invention relates to a polymer optical waveguide including: a core; an under-cladding; and an over-cladding, in which the polymer optical waveguide includes a coupling section and an optical waveguide section that are provided along a light propagation direction, the polymer optical waveguide includes portions having different core widths along the light propagation direction, and when a core width at a portion a having a narrowest core width is denoted Wa (μm) and a core height at the portion a is denoted Ha (μm), Ha is 1.3 μm or more and 4.5 μm or less, and Ha/Wa is 1.15 or less.

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.