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公开(公告)号：US10560213B2
公开(公告)日：2020-02-11
申请号：US16369259
申请日：2019-03-29
摘要： An optical device includes an optical coupler that performs branching of the input light and outputs a first-type branched light and a second-type branched light; a polarization converter that changes the direction of polarization of the second-type branched light output from the optical coupler; and a polarization synthesizer that outputs a polarization multiplexed light by synthesizing the first-type branched light, which is output from the optical coupler, and the second-type branched light, which has the direction of polarization changed by the polarization converter. The optical coupler has the wavelength characteristic that cancels out the wavelength characteristic of the polarization synthesizer regarding the second-type branched light included in the polarization multiplexed light.
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公开(公告)号：US20210373416A1
公开(公告)日：2021-12-02
申请号：US17168842
申请日：2021-02-05
IPC分类号： G02F1/31
摘要： An optical modulator in which an optical signal is input from one side of a package, includes in the package, a chip that optically modulates the optical signal and in which an input waveguide and an output waveguide of the optical signal are led to mutually different destinations each being one end of the chip facing the one side of the package and a side surface of the chip orthogonal to the one end of the chip; an input optical system coupled to the input waveguide of the chip; and an output optical system coupled to the output waveguide of the chip.
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公开(公告)号：US12047121B2
公开(公告)日：2024-07-23
申请号：US18077829
申请日：2022-12-08
IPC分类号： H04B10/69 , H01S5/50 , H04B10/50 , H04B10/516
CPC分类号： H04B10/69 , H04B10/503 , H04B10/5161 , H01S5/50
摘要： An optical device includes an optical coupler that inputs an optical signal received from a light source, a semiconductor optical amplifier that amplifies the optical signal received from the optical coupler, and a light receiving element that receives spontaneous emission light received from the semiconductor optical amplifier. The optical coupler includes a first input port to which the optical signal received from the light source is input, a second input port that is connected to an input stage of the light receiving element and that is different from the first input, and an output port that is connected to an input stage of the semiconductor optical amplifier, and that outputs optical signal received from the first input port to the semiconductor optical amplifier. The light receiving element receives, via the output port and the second input port, spontaneous emission light received from the semiconductor optical amplifier.
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公开(公告)号：US20220373828A1
公开(公告)日：2022-11-24
申请号：US17699746
申请日：2022-03-21
摘要： An optical device includes a silicon substrate, a waveguide formed of a thin film that is laminated on the silicon substrate and that is made of a perovskite oxide with a large electro-optic effect as compared to lithium niobate, and a cladding layer that covers the waveguide. Further, the optical device includes ground electrode that has a ground potential and a signal electrode that is arranged at a position facing the ground electrode and that applies driving voltage to the waveguide.
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5.发明申请公开(公告)号：US20190280776A1
公开(公告)日：2019-09-12
申请号：US16276215
申请日：2019-02-14
发明人： Shuntaro Makino , KOHEI SHIBATA , Suguru Akiyama
IPC分类号： H04B10/40 , H04B10/516 , G02F1/225 , G02F1/01
摘要： An optical transceiver device includes: an optical circuit that includes an optical modulator to generate a modulated optical signal and an optical reception circuit to convert a received optical signal into an electric signal and implemented in a rectangular optical circuit area; a driver circuit that drives the optical modulator and arranged along a first side of the optical circuit area; an amplifier circuit that converts an output signal of the optical reception circuit into a voltage signal and arranged along a second side of the optical circuit area, the second side being orthogonal to the first side; a first electrical component that is electrically coupled to the driver circuit and arranged in an area adjacent to the driver circuit; and a second electrical component that is electrically coupled to the amplifier circuit and arranged in an area adjacent to the amplifier circuit.
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公开(公告)号：US11936428B2
公开(公告)日：2024-03-19
申请号：US17946669
申请日：2022-09-16
发明人： Shuntaro Makino , Teruo Kurahashi
CPC分类号： H04B10/25
摘要： An optical device includes an electro-optic crystal layer, a first optical waveguide formed in the electro-optic crystal layer, and an electrode that applies an electric signal to the first optical waveguide. Further, the optical device includes a second optical waveguide in an amorphous state formed in the electro-optic crystal layer and connected to the first optical waveguide.
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公开(公告)号：US11693290B2
公开(公告)日：2023-07-04
申请号：US17165562
申请日：2021-02-02
发明人： Shuntaro Makino , Yoshinobu Kubota , Yasuhiro Ohmori , Masaharu Doi , Teruo Kurahashi , Shintaro Takeuchi
CPC分类号： G02F1/225 , G02F1/035 , G02F1/0316 , G02F2201/07 , G02F2201/12 , G02F2202/20
摘要： An optical waveguide device includes a substrate on which an intermediate layer, a thin-film LN layer of lithium niobate, and a buffer layer are stacked; an optical waveguide formed in the thin-film LN layer; and a plurality of electrodes near the optical waveguide. The intermediate layer and the buffer layer contain a same material of a metal element of any one of group 3 of group 18 of a periodic table of elements.
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公开(公告)号：US20230141163A1
公开(公告)日：2023-05-11
申请号：US17946669
申请日：2022-09-16
发明人： Shuntaro Makino , Teruo Kurahashi
IPC分类号： H04B10/25
CPC分类号： H04B10/25
摘要： An optical device includes an electro-optic crystal layer, a first optical waveguide formed in the electro-optic crystal layer, and an electrode that applies an electric signal to the first optical waveguide. Further, the optical device includes a second optical waveguide in an amorphous state formed in the electro-optic crystal layer and connected to the first optical waveguide.
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公开(公告)号：US20210384709A1
公开(公告)日：2021-12-09
申请号：US17323616
申请日：2021-05-18
摘要： An integrated photonic device having an array of two or more semiconductor optical amplifiers includes a first semiconductor optical amplifier, which has a first gain region and a second gain region connected by a first connecting waveguide, and a second semiconductor optical amplifier, which is provided in parallel with the first semiconductor optical amplifier and has a third gain region and a fourth gain region connected by a second connecting waveguide. The first gain region and the second gain region are provided on an outer side of the third gain region and the fourth gain region. The first connecting waveguide is configured to connect the first gain region and the second gain region on the outer side of the second connecting waveguide.
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公开(公告)号：US12044910B2
公开(公告)日：2024-07-23
申请号：US17725944
申请日：2022-04-21
发明人： Shuntaro Makino , Yoshinobu Kubota , Yasuhiro Ohmori , Masaharu Doi , Masaki Sugiyama , Shintaro Takeuchi , Yoshihiko Yoshida , Shinji Maruyama , Teruo Kurahashi
CPC分类号： G02F1/0353 , G02F1/212 , G02F1/225 , G02F2202/20 , H04J14/02
摘要： An optical device includes a thin film Lithium Niobate (LN) layer, a first optical waveguide, and a second optical waveguide. The thin film LN layer is an X-cut or a Y-cut LN layer. The first optical waveguide is an optical waveguide that is formed on the thin film LN layer along a direction that is substantially perpendicular to a Z direction of a crystal axis of the thin film LN layer. The second optical waveguide is an optical waveguide that is routed and connected to the first optical waveguide. At least a part of a core of the first optical waveguide is made thicker than a core of the second optical waveguide.
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