公开(公告)号：US20250093737A1

公开(公告)日：2025-03-20

申请号：US18832197

申请日：2022-11-18

Applicant: Fujikura Ltd.

Inventor： Yuichiro Kunai ,  Hiroyuki Kusaka ,  Masahiro Kashiwagi

IPC: G02F1/315

Abstract: An optical switch that switches an optical path of signal light obtained by modulating carrier light by a control signal and a data signal includes a mirror and a half mirror, an optical modulation element that reflects or refracts the signal light reflected by the mirror and the half mirror and includes cells each having an independently set phase modulation amount, a light detector that detects, at once, intensities of beams of the signal light passing through the half mirror and reflected by the mirror and the half mirror different times, and a controller that decodes the control signal from the detected intensities and sets the independently set phase modulation amount of each of the cells such that the signal light is emitted in a direction corresponding to the control signal.

公开(公告)号：US12256160B2

公开(公告)日：2025-03-18

申请号：US18001265

申请日：2022-01-18

Applicant: Fujikura Ltd.

Inventor： Hiroyuki Kusaka ,  Masahiro Kashiwagi ,  Yuichiro Kunai

IPC: H04N23/95 ,  H04N23/80 ,  H04N25/40

Abstract: An imaging device includes: an optical computing section that receives a first optical signal and generates a second optical signal including a feature amount extracted from the first optical signal; an image sensor that converts the second optical signal into a first electric signal including a piece of image information; and a computer that receives the first electric signal and generates second electric signals using machine learning models, each of the second electric signals corresponding to a respective one of the machine learning models, wherein: each of the second electric signals, generated from the first electric signal including the same piece of image information, includes different image information.

公开(公告)号：US20240353887A1

公开(公告)日：2024-10-24

申请号：US18685312

申请日：2022-08-18

Applicant: FUJIKURA LTD.

Inventor： Hiroyuki Kusaka ,  Masahiro Kashiwagi

IPC: G06E3/00

CPC classification number: G06E3/005

Abstract: An optical computing device includes an optical modulation element group including optical modulation elements. The optical modulation element group executes first optical computing with respect to a first signal light traveling along an optical path and second optical computing with respect to a second signal light traveling along the optical path in a direction opposite to a traveling direction of the first signal light.

公开(公告)号：US20230359880A1

公开(公告)日：2023-11-09

申请号：US17634403

申请日：2021-06-15

Applicant: FUJIKURA LTD.

Inventor： Hiroyuki Kusaka ,  Masahiro Kashiwagi ,  Yuichiro Kunai

IPC: G06N3/067

CPC classification number: G06N3/0675

Abstract: An optical computing device includes: an optical modulation element including cells with independently configurable amounts of modulation; and a reflector. The optical modulation element is configured with N (N is a natural number not less than 2)-computing regions A1, A2, . . . , AN. The computing region A1 performs optical computing by modulating and reflecting incident light. Each computing region Ai (i is a corresponding natural number not less than 2 and not more than N) other than the computing region A1 performs the optical computing by modulating and reflecting signal light that has been modulated and reflected by a computing region Ai−1 and then reflected by the reflector.

公开(公告)号：US20230358928A1

公开(公告)日：2023-11-09

申请号：US17634514

申请日：2021-06-30

Applicant: FUJIKURA LTD.

Inventor： Hiroyuki Kusaka ,  Masahiro Kashiwagi ,  Yuichiro Kunai

IPC: G02B5/18

CPC classification number: G02B5/1814

Abstract: An optical computing device includes a filter, through which light passes, and an optical diffraction element group that performs optical computing. The optical diffraction element group includes one or more optical diffraction elements having microcells, each of the microcells having an independently set thickness or a refractive index. After passing through the filter, the light first enters a first optical diffraction element among the one or more optical diffraction elements. The filter selectively transmits light in a direction that has an angle, with respect to an optical axis of the first optical diffraction element, that is less than or equal to a specific angle determined by the filter.

公开(公告)号：US20230176268A1

公开(公告)日：2023-06-08

申请号：US17923866

申请日：2021-08-18

Applicant: Fujikura Ltd.

Inventor： Hiroyuki Kusaka ,  Masahiro Kashiwagi

IPC: G02B5/18 ,  G02B27/42 ,  G06E3/00

CPC classification number: G02B5/1866 ,  G02B27/4238 ,  G06E3/00

Abstract: An optical computing system includes: a light diffraction element divided into blocks and including cells having respective thicknesses or refractive indices set independently of each other, wherein each of the blocks includes: a first cell of the cells having a thickness or a refractive index such that first optical computing is carried out and, a second cell of the cells having a thickness or a refractive index such that second optical computing is carried out; a light-emitting device including light-emitting cells corresponding to each of the blocks, that generates signal light, and that emits the signal light to the light diffraction element; and a light-receiving device including light-receiving cells corresponding to each of the cells of the light diffraction element, and that detects the signal light from the light diffraction element.

公开(公告)号：US09557482B2

公开(公告)日：2017-01-31

申请号：US14976603

申请日：2015-12-21

Applicant: Fujikura Ltd.

Inventor： Akira Oka ,  Kazuhiro Goi ,  Kensuke Ogawa ,  Hiroyuki Kusaka

IPC: G02B6/00 ,  G02B6/10 ,  G02B6/126 ,  G02B6/122 ,  G02B6/27 ,  G02B6/12

CPC classification number: G02B6/126 ,  G02B6/105 ,  G02B6/1228 ,  G02B6/2726 ,  G02B6/2766 ,  G02B2006/12038 ,  G02B2006/12061

Abstract: A high-order polarization conversion device configured of a planar optical waveguide, includes: a substrate; a lower clad disposed on the substrate; a core including a lower core and an upper core, the lower core being disposed on the lower clad and having a fixed height in a rectangular sectional shape, the upper core being formed of the same material as the lower core and having a fixed height in a rectangular sectional shape that is disposed continuously on the lower core; and an upper clad that is disposed on the core and the lower clad and is formed of the same material as the lower clad. The high-order polarization conversion device performs high-order polarization conversion between TE1 of the start portion and TM0 of the end portion.

Abstract translation: 由平面光波导构成的高阶偏振光转换装置包括：基板; 设置在所述基板上的下包层; 包括下芯和上芯的芯，下芯设置在下包层上并具有矩形截面形状的固定高度，上芯由与下芯相同的材料形成，并具有固定的高度 连续地设置在下芯上的矩形截面形状; 以及设置在芯和下包层上并由与下包层相同的材料形成的上包层。 高阶偏振变换装置在起始部分的TE1和端部的TM0之间进行高阶极化转换。

公开(公告)号：US20150241633A1

公开(公告)日：2015-08-27

申请号：US14422926

申请日：2013-08-13

Applicant: FUJIKURA LTD.

Inventor： Hiroyuki Kusaka ,  Kensuke Ogawa ,  Kazuhiro Goi

IPC: G02B6/28 ,  G02F1/225

CPC classification number: G02B6/2821 ,  G02B6/122 ,  G02B6/125 ,  G02B6/14 ,  G02B6/2813 ,  G02B6/2935 ,  G02F1/225 ,  G02F1/2255 ,  G02F2001/212

Abstract: An optical waveguide device includes: a mode splitter including a main waveguide in which lights can be propagated in at least two propagation modes with different propagation orders and a subsidiary waveguide which includes a coupling section disposed in parallel with the main waveguide at a certain distance away from the main waveguide so as to constitute a directional coupler and is capable of splitting at least one propagation mode out of the two or more propagation modes from the main waveguide. Also, ncore/ncladding which is a refractive index ratio between a core and a cladding which constitute the main waveguide and the subsidiary waveguide is in a range of 101% to 250%.

Abstract translation: 一种光波导装置包括：模式分离器，包括主波导，其中光可以以不同传播次数的至少两个传播模式传播，以及辅助波导，其包括在主距离处与一段距离平行设置的耦合部分 从主波导构成定向耦合器，并且能够从主波导从两个或更多个传播模式中分离出至少一个传播模式。 此外，构成主波导和辅助波导的芯和包层之间的折射率之比ncore / ncladding在101％至250％的范围内。

公开(公告)号：US20250155735A1

公开(公告)日：2025-05-15

申请号：US18839586

申请日：2023-02-06

Applicant: FUJIKURA LTD.

Inventor： Mamoru Otake ,  Hiroyuki Kusaka ,  Masahiro Kashiwagi

IPC: G02F1/01 ,  G02B27/10

Abstract: An optical computing device includes an image sensor including one or more light receiving cells, one or more optical modulation elements each including cells that each have a phase-modulation amount, an optical splitter element that splits signal light into monitoring signal light entering the image sensor and computing signal light entering the one or more optical modulation elements, and a controller that independently sets the phase-modulation amount of each of the cells in accordance with an intensity of the monitoring signal light detected by a corresponding one of the light receiving cells of the image sensor.

公开(公告)号：US20240418914A1

公开(公告)日：2024-12-19

申请号：US18274090

申请日：2021-11-09

Applicant: FUJIKURA LTD.

Inventor： Hiroyuki Kusaka ,  Masahiro Kashiwagi

IPC: G02B5/18

Abstract: A light diffraction element unit includes a light diffraction element including a substrate having a first main surface and a second main surface and a light diffraction structure composed of microcells and disposed on the first main surface, a first light-transmissive coating layer that covers the first main surface, and a second light-transmissive coating layer that covers the second main surface. A shape of a main surface of the first light-transmissive coating layer and a shape of a main surfaces of the second light-transmissive coating layer are complementary to each other. The main surface of the first light-transmissive coating layer is disposed opposite one side of the substrate. The main surface of the second light-transmissive coating layer is disposed opposite another side of the substrate.