公开(公告)号：US20230084190A1

公开(公告)日：2023-03-16

申请号：US17884895

申请日：2022-08-10

申请人： FUJITSU OPTICAL COMPONENTS LIMITED

发明人： Tatsuya ITO ,  Takeshi MATSUMOTO

IPC分类号： G02B6/122 ,  G02B6/136 ,  G02B6/30

摘要： An optical integrated device includes a substrate and a waveguide that has a hollow structure. The waveguide includes a first waveguide and a second waveguide that is optically coupled to the first waveguide and that has a smaller relative refractive index difference than that of the first waveguide and converts a mode diameter to a mode diameter of an optical fiber in accordance with travelling of light. The optical integrated device includes a dent portion that is formed in the vicinity of the dicing line on the substrate such that the width of the output end surface is smaller than the core width of the optical fiber that is optically coupled to the output end surface in the state in which the dicing end surface of the substrate protrudes farther than the output end surface of the second waveguide in the axial direction of the optical waveguide.

公开(公告)号：US20200206842A1

公开(公告)日：2020-07-02

申请号：US16594828

申请日：2019-10-07

申请人： Fujitsu Optical Components Limited

发明人： Kohei SHIBATA ,  Tatsuya ITO

IPC分类号： B23K26/20 ,  H01L31/18 ,  H04B10/40

摘要： An optical module includes an optical semiconductor chip having a first surface that includes a laser beam irradiation region and a cleavage region, an optical fiber optically coupled to the first surface, and a support member having a second surface bonded to the first surface, and configured to support the optical fiber. The optical semiconductor chip has an optical signal input and output part located in the cleavage region, and the second surface is bonded to the first surface within the cleavage region.

公开(公告)号：US20240230987A1

公开(公告)日：2024-07-11

申请号：US18516109

申请日：2023-11-21

申请人： FUJITSU OPTICAL COMPONENTS LIMITED

发明人： Tatsuya ITO ,  Akira OKA

IPC分类号： G02B6/036 ,  G02B6/42

CPC分类号： G02B6/036 ,  G02B6/4201

摘要： An optical device includes a core formed on a substrate, a cladding layer covering the core, and a passivation layer formed on the cladding layer. The optical device includes a spot size converter that causes an increase in spot size of a light, which is guided through the core, toward end portion of the substrate. The passivation layer has a higher material refractive index than the cladding layer, and is formed in region excluding at least upper portion of the spot size converter.