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公开(公告)号：US09423566B2
公开(公告)日：2016-08-23
申请号：US14049584
申请日：2013-10-09
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
CPC classification number: G02B6/29355 , G02F1/035 , G02F2001/212 , G02F2201/58 , H04B10/5053
Abstract: An optical modulator includes a Mach-Zehnder optical waveguide that includes a pair of parallel waveguides, and a two-input-one-output optical coupler that couples light output from the parallel waveguides; a branching waveguide that branches a portion of light output from the optical coupler; and a light receiving unit that receives the light output from the branching waveguide. Orientation of an output end of the branching waveguide is angled toward the light receiving unit, to be oblique with respect to the parallel waveguides, and orientation of an output end of the optical coupler is angled toward a side opposite to that of the output end of the branching waveguide, to be oblique with respect to the parallel waveguides.
Abstract translation: 光调制器包括马赫 - 曾德尔光波导，其包括一对平行波导和耦合从平行波导输出的光的双输入 - 一输出光耦合器; 分支波导，其分支从所述光耦合器输出的光的一部分; 以及光接收单元，其接收从分支波导输出的光。 分支波导的输出端的方向朝向光接收单元倾斜，相对于平行波导倾斜，并且光耦合器的输出端的取向朝向与输出端的输出端相反的一侧倾斜 分支波导相对于平行波导倾斜。
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公开(公告)号：US09377665B2
公开(公告)日：2016-06-28
申请号：US14250760
申请日：2014-04-11
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
CPC classification number: G02F1/225 , G02F2001/212
Abstract: An optical modulator includes: a substrate that has electrooptical effect and has a Mach-Zehnder modulator that has a 2×2 coupler acting as a splitter, two intermediate waveguides coupled to outputting waveguides of the splitter and another 2×2 coupler acting as a combiner coupled to the two intermediate waveguides; and a suppresser that suppresses a power of an output light from an uncoupled waveguide and an input light into the uncoupled waveguide of at least one of the 2×2 couplers in an extending direction of the Mach-Zehnder modulator.
Abstract translation: 光调制器包括：具有电光效应的基片，具有马赫 - 曾德调制器，该调制器具有2×2耦合器作为分路器，耦合到输出分路器的波导的两个中间波导管和作为组合器的另一个2×2耦合器 耦合到两个中间波导; 以及抑制器，其抑制来自马赫 - 曾德尔调制器的延伸方向的来自未耦合波导和输入光的输出光的功率到至少一个2×2耦合器的非耦合波导中。
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公开(公告)号：US09316887B2
公开(公告)日：2016-04-19
申请号：US13970804
申请日：2013-08-20
Applicant: FUJITSU OPTICAL COMPONENTS LIMITED
Inventor： Masaki Sugiyama
IPC: G02F1/225
CPC classification number: H04B10/532 , G02F1/2255 , G02F2001/212 , G02F2201/126 , H04J14/06
Abstract: 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.
Abstract translation: 一种光学调制器包括：容纳其中的第一基板和与第一基板不同的第二基板的封装，以及封装外部的柔性电路板。 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：US09081216B2
公开(公告)日：2015-07-14
申请号：US13898852
申请日：2013-05-21
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
CPC classification number: G02F1/035 , G02F1/225 , G02F2201/122 , G02F2201/18
Abstract: An optical device includes first and second optical modulators formed on a substrate having electro-optical effect. The first optical modulator includes a first optical waveguide; a first signal electrode configured to provide a first data signal for the first optical waveguide; and a first DC electrode, arranged at an output side of the first signal electrode, and configured to provide first DC voltage for the first optical waveguide. The second optical modulator includes a second optical waveguide; a second signal electrode configured to provide a second data signal for the second optical waveguide; and a second DC electrode provided, arranged at an input side of the second signal electrode, and configured to provide second DC voltage for the second optical waveguide. Input portions of the first and second signal electrodes are arranged at a same side edge of the substrate.
Abstract translation: 光学器件包括形成在具有电光效应的衬底上的第一和第二光学调制器。 第一光调制器包括第一光波导; 第一信号电极，被配置为提供第一光波导的第一数据信号; 以及第一直流电极，配置在第一信号电极的输出侧，构成为第一光波导提供第一直流电压。 第二光调制器包括第二光波导; 第二信号电极，被配置为为所述第二光波导提供第二数据信号; 以及第二直流电极，设置在所述第二信号电极的输入侧，并且被配置为为所述第二光波导提供第二直流电压。 第一和第二信号电极的输入部分布置在基板的相同的侧边缘处。
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公开(公告)号：US12025866B2
公开(公告)日：2024-07-02
申请号：US17862903
申请日：2022-07-12
Applicant: FUJITSU OPTICAL COMPONENTS LIMITED
Inventor： Masaki Sugiyama
CPC classification number: G02F1/0356 , G02F1/212 , G02F1/2255
Abstract: An optical device includes an optical waveguide that is a rib type and that is formed of a thin film lithium niobate (LiNbO3: LN) substrate using a thin film LN crystal, and a buffer layer that is laminated on the optical waveguide. Furthermore, the optical device includes an electrode that is laminated on the buffer layer and that applies a voltage to the optical waveguide, and a gettering site that is disposed parallel to the optical waveguide and that traps an electric charge inside the optical waveguide.
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Patent Agency Ranking
公开(公告)号：US11892716B2
公开(公告)日：2024-02-06
申请号：US17568261
申请日：2022-01-04
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
CPC classification number: G02F1/035 , G02B6/13 , G02B2006/1204
Abstract: An optical device includes a substrate, a layered structure provided on the substrate and including an intermediate layer, an optical waveguide formed of a thin crystal film having an electro-optic effect, and a buffer layer stacked in this order, and an electrode provided on or above the buffer layer and configured to apply a direct current voltage to the optical waveguide. The resistivity of the intermediate layer is higher than the resistivity of the buffer layer.
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公开(公告)号：US20220082876A1
公开(公告)日：2022-03-17
申请号：US17391185
申请日：2021-08-02
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
IPC: G02F1/035
Abstract: An optical device includes an optical modulator formed on a substrate. The optical device includes: a signal electrode for the optical modulator that is formed on the substrate; a ground electrode for the optical modulator that is formed on the substrate; an optical waveguide that is provided in a region between the signal electrode and the ground electrode; a first buffer region that is formed between the optical waveguide and the substrate; and second buffer regions that are formed between the optical waveguide and the signal electrode and between the optical waveguide and the ground electrode. A permittivity of the second buffer regions is higher than a permittivity of the first buffer region.
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58.发明授权公开(公告)号：US11143889B2
公开(公告)日：2021-10-12
申请号：US16848108
申请日：2020-04-14
Applicant: FUJITSU OPTICAL COMPONENTS LIMITED
Inventor： Masaki Sugiyama
IPC: G02F1/035 , G02F1/025 , G01R19/165 , G01M11/00 , G01R31/00 , G01R1/067 , H04B10/66 , H04B10/50 , G02F1/015
Abstract: An optical transmission device includes: a substrate; a waveguide that is provided in the substrate and transmits an optical signal; a signal wiring that is provided in the substrate and transmits an electric signal; and a silicon wiring that is provided in the substrate and is silicon added with an impurity. The signal wiring is placed in an area of the substrate, the area being away from an end of the substrate by a predetermined distance or more. One end of the silicon substrate is connected to the signal wiring, and the other end of the silicon wiring extends to the end of the substrate.
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公开(公告)号：US10998974B2
公开(公告)日：2021-05-04
申请号：US16505139
申请日：2019-07-08
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
IPC: H04B10/40 , H04B10/25 , G01J4/04 , H04B10/073 , H04J14/06
Abstract: An optical device is formed on an optical IC chip. The optical device includes: an optical device circuit; a first optical waveguide that is coupled to the a first grating coupler; a second grating coupler; a polarization rotator that is coupled to the first grating coupler; a polarization beam combiner or a polarization beam splitter that is coupled to the polarization rotator and to the second grating coupler; and a second optical waveguide that is coupled to the polarization beam combiner or to the polarization beam splitter. The first optical waveguide and the second optical waveguide respectively extend to an edge of the optical IC chip.
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60.发明授权公开(公告)号：US10938481B2
公开(公告)日：2021-03-02
申请号：US16587822
申请日：2019-09-30
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
Abstract: An optical transceiver has a first optical waveguide connected to an input/output port for signal light, a second optical waveguide configured to input and output test light, an optical circuit configured to perform optical-to-electrical conversion or electrical-to-optical conversion, and an optical switch provided between the optical circuit and the first and the second optical waveguides and configured to switch between a first path connecting the optical circuit to the first optical waveguide and a second path connecting the optical circuit to the second optical waveguide, wherein the optical switch is configured to select the second path in an ON state with an electrical voltage being applied to the optical switch, and select the first path in an OFF state without the electrical voltage being applied to the optical switch.
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