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公开(公告)号：US20240230992A9
公开(公告)日：2024-07-11
申请号：US18235930
申请日：2023-08-21
发明人： Masaki SUGIYAMA
IPC分类号： G02B6/122
CPC分类号： G02B6/1228
摘要： An optical device includes a first layer, a second layer, two first waveguides arranged in a side by side manner in the first layer; two second waveguides arranged in a side by side manner in the second layer, and a third waveguide arranged between the first waveguides and between the second waveguides. The first waveguide includes a first tapered waveguide and a second tapered waveguide. The third waveguide includes a third tapered waveguide that is disposed side by side with the second tapered waveguides. The first tapered waveguide has a width that is gradually narrower as the first tapered waveguide is away from a joining point with the second tapered waveguide. The second tapered waveguide has a width that is gradually narrower as the second tapered waveguide is away from a joining point with the first tapered waveguide. The third tapered waveguide has a width that is gradually wider.
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公开(公告)号：US20240077673A1
公开(公告)日：2024-03-07
申请号：US18227776
申请日：2023-07-28
发明人： Masaki SUGIYAMA
CPC分类号： G02B6/125 , G01M11/30 , G02B2006/12147
摘要： An optical chip includes a chip area located on a wafer, and an optical circuit arranged in the chip area. The optical chip includes a first waveguide that is connected to a first operational fiber, a second waveguide, and a first coupler that includes a first port that is connected to the first waveguide and the second waveguide and a second port that is connected to the optical circuit. Furthermore, the optical chip includes a first trench that is formed on a surface of the chip area, that is connected to the second waveguide, and in which a first test purpose fiber is inserted.
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公开(公告)号：US20230004028A1
公开(公告)日：2023-01-05
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
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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公开(公告)号：US20210278597A1
公开(公告)日：2021-09-09
申请号：US17141288
申请日：2021-01-05
发明人： Masaki SUGIYAMA
摘要： An optical device includes: a substrate; an optical waveguide that forms a Mach-Zehnder interferometer; a signal electrode; and a ground electrode. The optical waveguide is placed between the signal electrode and the ground electrode.
An electric field is generated in a direction along a surface of the substrate when a voltage is applied between the signal electrode and the ground electrode. The optical waveguide includes a first waveguide through which input light propagates, a curved waveguide which is optically coupled to the first waveguide, and a second waveguide which is optically coupled to the curved waveguide. The signal electrode includes first and second electrodes that are respectively placed near the first and second waveguides. An electric signal is supplied to the first electrode, and an inverted electric signal is supplied to the second electrode.-
公开(公告)号：US20170357054A1
公开(公告)日：2017-12-14
申请号：US15605192
申请日：2017-05-25
发明人： Masaki SUGIYAMA
CPC分类号： G02B6/2861 , G02B6/125 , G02B6/29352 , G02B6/29398 , G02B2006/12061 , G02B2006/12097
摘要： A disclosed optical device includes a first waveguide disposed between a branching portion and a multiplexing portion on a semiconductor substrate, and a second waveguide disposed between the branching portion and the multiplexing portion, the second waveguide being longer than the first waveguide. In the optical device, an optical confinement effect of the first waveguide is greater than an optical confinement effect of the second waveguide, the first waveguide has a curvature with a first curvature radius (Rs), the second waveguide has a curvature with a second curvature radius (Rl), and the first curvature radius is smaller than the second curvature radius.
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公开(公告)号：US20160191169A1
公开(公告)日：2016-06-30
申请号：US15063588
申请日：2016-03-08
发明人： Masaki SUGIYAMA
IPC分类号： H04B10/532 , H04J14/06 , G02F1/225
CPC分类号： H04B10/532 , G02F1/2255 , G02F2001/212 , G02F2201/126 , H04J14/06
摘要： An optical modulator includes a package that accommodates therein a first substrate and a second substrate different from the first substrate, and outside the package, a flexible circuit board. The first substrate has plural optical modulating units disposed thereon in parallel and each including a Mach-Zehnder optical waveguide. Plural first signal line paths corresponding to the optical modulating units are disposed on the second substrate. Plural second signal line paths corresponding to the optical modulating units are disposed on the flexible circuit board. Electrical lengths of the second signal line paths are different from one another. Electrical lengths of signal paths that span from input ends of the second signal line paths corresponding to the optical modulating units to base points on signal electrodes, via the first signal line paths, are equal to one another.
摘要翻译： 一种光学调制器包括：容纳其中的第一基板和不同于第一基板的第二基板以及封装外部的柔性电路板的封装。 第一基板平行配置有多个光调制单元，每一个包括马赫 - 策德尔光波导。 对应于光调制单元的多个第一信号线路径设置在第二基板上。 对应于光调制单元的多个第二信号线路径设置在柔性电路板上。 第二信号线路径的电长度彼此不同。 经由第一信号线路径跨越从与光调制单元对应的第二信号线路径到信号电极上的基点的信号路径的电长度彼此相等。
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公开(公告)号：US20240295708A1
公开(公告)日：2024-09-05
申请号：US18425106
申请日：2024-01-29
发明人： Masaki SUGIYAMA
IPC分类号： G02B6/42
CPC分类号： G02B6/4239 , G02B6/4206
摘要： An optical device includes a substrate, a trench that is formed on the substrate, an optical waveguide that is formed on the substrate and that is connected to a first side surface of the trench, and a lens that is arranged on the first side surface included in the trench and that is connected to the optical waveguide. Furthermore, the optical device includes an optical fiber that is secured, by an adhesive, to a chip end surface that is located adjacent to a second side surface that is located opposite the first side surface included in the trench.
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公开(公告)号：US20230073002A1
公开(公告)日：2023-03-09
申请号：US17840178
申请日：2022-06-14
发明人： Masaki SUGIYAMA
摘要： An optical device includes a modulator and a tap coupler. The modulator includes an optical waveguide that is formed of a thin-film lithium niobate (LN) substrate and through which light passes, and an electrode that applies voltage to the optical waveguide, and modulates a phase of light that passes through the optical waveguide in accordance with an electric field in the optical waveguide, where the electric field corresponds to the voltage. The tap coupler includes at least a part formed of the thin-film LN substrate, and splits a part of the light that passes through an inside of the optical waveguide. The tap coupler includes a delayed interferometer that splits a part of the light that passes through the optical waveguide, at a split ratio corresponding to a phase difference of light that passes through an inside of the tap coupler from the optical waveguide.
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公开(公告)号：US20230065036A1
公开(公告)日：2023-03-02
申请号：US17845328
申请日：2022-06-21
发明人： Masaki SUGIYAMA
摘要： An optical device includes a rib optical waveguide that is a thin-film lithium niobate (LN) crystal formed of a thin-film LN substrate, and a buffer layer that is laminated on the optical waveguide. The optical device further includes an electrode that is laminated on the buffer layer, and sub electrodes that are arranged parallel to the electrode on the buffer layer, and attract a charge in the optical waveguide in accordance with electrification.
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10.发明申请公开(公告)号：US20220163827A1
公开(公告)日：2022-05-26
申请号：US17496304
申请日：2021-10-07
发明人： Masaki SUGIYAMA
摘要： An optical device has a silicon (Si) substrate, a ground electrode, a lithium niobate (LN) optical waveguide, and a signal electrode. The ground electrode is an electrode that is at ground potential and that is layered on the Si substrate. The LN optical waveguide is an optical waveguide that is formed by a thin film LN substrate that is layered on the ground electrode. The signal electrode is an electrode that is disposed at a position opposite the ground electrode with the LN optical waveguide interposed therebetween and that applies a high-frequency signal.
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