公开(公告)号：US20220171127A1

公开(公告)日：2022-06-02

申请号：US17442026

申请日：2020-04-16

申请人： Nippon Telegraph and Telephone Corporation

发明人： Makoto Jizodo ,  Manabu Oguma ,  Yusuke Nasu ,  Yuichiro Ikuma

IPC分类号： G02B6/125 ,  H01P5/22 ,  H04B10/61

摘要： To provide an optical 90-degree hybrid formed of a silicon waveguide capable of suppressing an optical loss and a phase error, and facilitating electronic packaging and optical packaging. In the optical 90-degree hybrid circuit including two optical branching units facing each other and two optical coupling units facing away from each other, four arm waveguides are arranged including bent waveguides each of which guides an output light of the optical branching unit to the optical coupling unit, and is formed in a curved shape.

公开(公告)号：US20220120965A1

公开(公告)日：2022-04-21

申请号：US17427867

申请日：2020-01-24

申请人： Nippon Telegraph and Telephone Corporation

发明人： Yuichiro Ikuma ,  Yusuke Nasu ,  Manabu Oguma ,  Takashi Yamada

IPC分类号： G02B6/122 ,  G02B6/12 ,  G02B6/30

摘要： An object is to improve crosstalk between ports while keeping an interposer circuit small. In an interposer circuit that includes a first surface connected to an optical circuit, a second surface that is connected to a fiber block and is located opposite to the first surface in parallel with the first surface, and a plurality of connection waveguides connected to a plurality of input/output waveguides included in the optical circuit and a plurality of input/output fibers included in the fiber block, the connection waveguides each have a straight shape, and an angle (θ) formed between the first surface and each of the connection waveguides is the same as an angle (φ) formed between the second surface and each of the connection waveguides.

公开(公告)号：US20220066227A1

公开(公告)日：2022-03-03

申请号：US17311955

申请日：2019-12-24

申请人： Nippon Telegraph and Telephone Corporation

发明人： Yusuke Nasu ,  Manabu Oguma ,  Shogo Yamanaka ,  Makoto Jizodo

IPC分类号： G02B27/28 ,  G02F1/295 ,  H04B10/40 ,  H04J14/06

摘要： A polarization multiplex optical transmitter circuit can provide compensation for the transmission PDL while reducing decrease in transmission power. The polarization multiplex optical transmitter circuit includes a beam divider circuit configured to divide light outputted from a light source, optical phase shifters provided in at least one of two waveguides connected to output terminals of the beam divider circuit, a light wave synthesizer circuit connected to the two waveguides, first and second optical transmitters coupled to two output terminals of the light wave synthesizer circuit, a polarization multiplexer configured to synthesize two output polarized waves from the first and second optical transmitters, and a polarization rotator provided between the first and second optical transmitters and the polarization multiplexer and coupled to at least one of the first and second optical transmitters.

公开(公告)号：US20220404567A1

公开(公告)日：2022-12-22

申请号：US17778253

申请日：2019-11-28

申请人： Nippon Telegraph and Telephone Corporation

发明人： Yuichiro Ikuma ,  Yusuke Nasu ,  Takashi Yamada

IPC分类号： G02B6/42

摘要： An optical circuit module in which an optical fiber array and an optical circuit substrate are connected, the optical fiber array including a groove substrate in which a groove for optical fiber alignment is formed, a pressing plate stacked on and bonded to the groove substrate, and an optical fiber bonded to and fixed in the groove of the groove substrate, and the optical circuit substrate including an input/output waveguide. In a connection surface of the optical circuit module, an area of a common portion in a cross section of the optical circuit substrate and the pressing plate is larger than an area of a common portion in a cross section of the optical circuit substrate and the groove substrate.

公开(公告)号：US20220066110A1

公开(公告)日：2022-03-03

申请号：US17420356

申请日：2020-01-07

申请人： Nippon Telegraph and Telephone Corporation

发明人： Yuriko Kawamura ,  Yusuke Nasu ,  Kiyofumi Kikuchi ,  Shunichi Soma

IPC分类号： G02B6/42 ,  G02B6/46

摘要： An object is to easily convey by suction an optical module equipped with optical fibers having ends coupled to optical receptacles and mount the optical module on a substrate. An optical module according to the present invention includes an optical device to which optical fibers having ends coupled to optical receptacles are optically coupled and also includes a carrier composed of a substrate and adhesive layers formed on the upper and lower surfaces of the substrate. The optical device is bonded on the adhesive layer formed on the lower surface of the substrate. Part of the optical fibers and the optical receptacles are bonded on the adhesive layer formed on the surface of the substrate.

公开(公告)号：US20220399467A1

公开(公告)日：2022-12-15

申请号：US17619070

申请日：2020-06-15

申请人： NTT Electronics Corporation ,  Nippon Telegraph and Telephone Corporation

发明人： Keiichi Morita ,  Atsushi Murasawa ,  Hiroki Kawashiri ,  Yusuke Nasu

IPC分类号： H01L31/0224 ,  H01L31/0232 ,  H01L31/105

摘要： A light shielding structure of an optical circuit of the present invention uses a part of the structure of the light reception element itself to suppress stray light. A stepped electrode that covers an upper surface and side surface of a first semiconductor layer constituting a light absorption portion of the light reception element is formed at a height substantially equal to that of an optical waveguide in the optical circuit, and the light absorption portion of the light reception element is shielded from stray light by a wall-shaped or column-shaped wiring electrode extending substantially perpendicularly to a surface layer of the optical circuit. The light shielding structure of the present invention uses a part of the configuration of the light reception element, is formed integrally with the light reception element, and also has an aspect of the invention of the light reception element.

公开(公告)号：US20220357512A1

公开(公告)日：2022-11-10

申请号：US17619124

申请日：2019-07-01

申请人： Nippon Telegraph and Telephone Corporation

发明人： Yuriko Kawamura ,  Takashi Yamada ,  Yusuke Nasu

IPC分类号： G02B6/26 ,  G02B6/36

摘要： An optical module according to the present invention includes: an optical device including an optical waveguide chip; an optical fiber block bonded to and arranged on an end face of the optical waveguide chip; an optical fiber that has one end optically connected to the optical waveguide chip via the optical fiber block; an optical fiber holding mechanism for holding the other end of the optical fiber; and an optical fiber carrier. The optical fiber is arranged while being curved from the optical fiber carrier toward the optical fiber block in a U-shape, and a wall structure is formed on the surface of the carrier while being adjacent to the optical fiber at, for example, a position on the outer side of the U-shaped curve of the optical fiber position at which the wall structure reduces a normal force of the optical fiber.

公开(公告)号：US11493776B2

公开(公告)日：2022-11-08

申请号：US17311955

申请日：2019-12-24

申请人： Nippon Telegraph and Telephone Corporation

发明人： Yusuke Nasu ,  Manabu Oguma ,  Shogo Yamanaka ,  Makoto Jizodo

IPC分类号： H04J14/06 ,  G02B27/28 ,  G02F1/295 ,  H04B10/40

摘要： A polarization multiplex optical transmitter circuit can provide compensation for the transmission PDL while reducing decrease in transmission power. The polarization multiplex optical transmitter circuit includes a beam divider circuit configured to divide light outputted from a light source, optical phase shifters provided in at least one of two waveguides connected to output terminals of the beam divider circuit, a light wave synthesizer circuit connected to the two waveguides, first and second optical transmitters coupled to two output terminals of the light wave synthesizer circuit, a polarization multiplexer configured to synthesize two output polarized waves from the first and second optical transmitters, and a polarization rotator provided between the first and second optical transmitters and the polarization multiplexer and coupled to at least one of the first and second optical transmitters.

公开(公告)号：US20210382249A1

公开(公告)日：2021-12-09

申请号：US17265953

申请日：2019-08-14

申请人： Nippon Telegraph and Telephone Corporation

发明人： Yuriko Kawamura ,  Yusuke Nasu ,  Kiyofumi Kikuchi ,  Shunichi Soma

IPC分类号： G02B6/42

摘要： An optical module with optical fibers is intended to be able to be easily sucked and conveyed, and mounted on another substrate. An optical module of the present disclosure includes an optical device to which optical fibers are optically connected; and a carrier including a substrate and an adhesive layer formed at a surface of the substrate, and a part of the optical device and a part of the optical fibers are adhesively fixed on a surface of the adhesive layer. The optical device may include ball grid array shaped electrodes. The carrier may be provided with a plurality of holes.

公开(公告)号：US20150192736A1

公开(公告)日：2015-07-09

申请号：US14416244

申请日：2013-07-26

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION ,  NTT ELECTRONICS CORPORATION

发明人： Ryoichi Kasahara ,  Atsushi Aratake ,  Ikuo Ogawa ,  Yusuke Nasu ,  Yuichi Suzuki ,  Shunichi Soma

IPC分类号： G02B6/122

CPC分类号： G02B6/122 ,  G02B6/30 ,  G02B6/4239 ,  G02B6/4244

摘要： An objective is to provide an integrated optical module which can avoid positional change and separation of a PLC chip when humidity changes. Provided is an integrated optical module characterized in that the integrated optical module includes: a PLC chip; a seat bonded and fixed to part of a lower surface of the PLC chip with an adhesive which is applied to an upper surface of the seat; and a support portion supporting the seat, in which a groove where an adhesive overflowing from the upper surface of the seat is to stay is formed in an upper surface of the support portion at a portion surrounding the seat, the upper surface of the seat serving as an adhesion surface.

摘要翻译： 目的是提供一种集成的光学模块，可以避免湿度变化时PLC芯片的位置变化和分离。 提供了一种集成光学模块，其特征在于，集成光学模块包括：PLC芯片; 座椅通过施加到座椅的上表面上的粘合剂固定到PLC芯片的下表面的一部分上; 以及支撑所述座椅的支撑部分，其中，在所述座椅周围的部分处，在所述支撑部分的上表面中形成有从所述座椅的上表面溢出的粘合剂停留的槽，所述座椅的上表面服务 作为粘合面。