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公开(公告)号：US20230116990A1
公开(公告)日：2023-04-20
申请号：US18087201
申请日：2022-12-22
摘要： Optical switch trees are commonly used to route light from one input channel to multiple possible output channels one at a time. As the number of output channels increases, the number of wire-bonding pads increases and the drive electronics becomes more complicated. The optical switch tree comprises an array of optical switches arranged in a plurality of rows of optical switches, each connected by a row bus, which are connected to a first multiplexer and a common power source; and a plurality of columns of optical switches, each connected by a column bus, which are connected to a second multiplexer and a common ground. A control processor selects one of the plurality of columns of optical switches to connect to the common ground, and selects one of the plurality of rows of optical switches to connect to the common power source, thereby selecting a single optical switch in the array of optical switches to activate.
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公开(公告)号：US20230095427A1
公开(公告)日：2023-03-30
申请号：US17768774
申请日：2019-10-16
IPC分类号： G02F1/313
摘要： An optical switch includes 2-input 2-output optical switches connected in a multistage, an optical gate provided at each of N-th optical output ports, a driving circuit for operating the 2-input 2-output optical switch, and a driving circuit for operating the optical gate. The driving circuits for operating the 2-input 2-output optical switches are integrated in the vicinity of a control electrode on a waveguide of the 2-input 2-output optical switch. The driving circuits for operating the optical gates are integrated in the vicinity of a control electrode on a waveguide of the optical gates. The waveguide of the 2-input 2-output optical switch and the waveguide of the optical gate each has a p layer, an i layer, and an n layer sequentially formed on a semi-insulating substrate. The optical switch has a trench reaching the semi-insulating substrate between the 2-input 2-output optical switch and the optical gate.
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公开(公告)号：US11609373B2
公开(公告)日：2023-03-21
申请号：US17015350
申请日：2020-09-09
发明人： Mami Fujihara , Naoya Takai , Kazuki Tanaka
IPC分类号： H01L31/02 , G02B6/12 , G02F1/313 , H01L31/0232 , H01L31/0224
摘要： An optical coupling device includes a light receiving element including a first output terminal and a second output terminal, a light emitting element provided on the light receiving element, a first switching element, a first electrode plate, and a sealing member. The first switching element includes a first main terminal connected to the first output terminal, a first control terminal connected to the second output terminal, and a second main terminal. An upper surface of the first electrode plate is connected to the second main terminal. The sealing member covers the light receiving element, the light emitting element, and the first switching element. A lower surface of the first electrode plate is exposed on a lower surface of the sealing member. The lower surface of the first electrode plate and the lower surface of the sealing member form the same plane.
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公开(公告)号：US20230047258A1
公开(公告)日：2023-02-16
申请号：US17728890
申请日：2022-04-25
申请人： PSIQUANTUM CORP.
发明人： Mihai VIDRIGHIN , Nikhil KUMAR , Gary GIBSON
摘要： An optical switch device includes a first semiconductor structure configured to operate as a first waveguide and a second semiconductor structure configured to operate as a second waveguide. The second semiconductor structure is located above or below the first semiconductor structure and separated from the first semiconductor structure. The second semiconductor structure includes a first portion having a first width and a second portion having a width different from the first width and located on the first portion. The first portion is located between a first doped region and a second doped region.
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公开(公告)号：US11561452B2
公开(公告)日：2023-01-24
申请号：US17459740
申请日：2021-08-27
摘要： Optical switch trees are commonly used to route light from one input channel to multiple possible output channels one at a time. As the number of output channels increases, the number of wire-bonding pads increases and the drive electronics becomes more complicated. The optical switch tree comprises an array of optical switches arranged in a plurality of rows of optical switches, each connected by a row bus, which are connected to a first multiplexer and a common power source; and a plurality of columns of optical switches, each connected by a column bus, which are connected to a second multiplexer and a common ground. A control processor selects one of the plurality of columns of optical switches to connect to the common ground, and selects one of the plurality of rows of optical switches to connect to the common power source, thereby selecting a single optical switch in the array of optical switches to activate.
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公开(公告)号：US11502211B2
公开(公告)日：2022-11-15
申请号：US16772786
申请日：2020-03-20
发明人： Zhi Liu
IPC分类号： G06V40/13 , H01L31/0232 , G02F1/313 , H01L31/16
摘要： A fingerprint identification structure and a display panel are disclosed. display panel includes a fingerprint identification structure. The fingerprint identification structure includes a light energy switch and a thermosensitive light path adjustment structure. The light energy switch is configured to switch from an open circuit to a closed circuit under light irradiation. The thermosensitive light path adjustment structure is connected to a surface of the light energy switch, is able to transmit light internally, and is configured to adjust a light path of light to drive the light to irradiate the light energy switch when receiving a heat source.
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7.发明授权公开(公告)号：US11500264B2
公开(公告)日：2022-11-15
申请号：US17399625
申请日：2021-08-11
发明人： Kei Katou , Norikazu Miyazaki
摘要： An optical waveguide device includes a substrate on which an optical waveguide is formed, and an object that is disposed on the substrate. The optical waveguide includes a mode conversion/branching portion that converts a mode of a light wave propagating through the optical waveguide and branches the light wave, and the object is disposed to cover a part or the whole of the mode conversion/branching portion or not to cover the mode conversion/branching portion when the substrate is viewed in a plan view. In a case where the object is disposed to cover a part of the mode conversion/branching portion, the object is disposed not to consecutively cover a section over a length of a predetermined value or higher in an advancing direction of a light wave.
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公开(公告)号：US11500262B2
公开(公告)日：2022-11-15
申请号：US16842887
申请日：2020-04-08
发明人： Bo Peng , Yusheng Bian , Michal Rakowski , Tymon Barwicz
摘要： One illustrative backscattering generator disclosed herein includes a low-reflection waveguide structure, a slot waveguide structure comprising a first waveguide, a second waveguide and a slot located between the first waveguide and the second waveguide, and a variable direction coupler operatively coupled to the low-reflection waveguide structure and the slot waveguide structure.
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公开(公告)号：US20220357601A1
公开(公告)日：2022-11-10
申请号：US17623507
申请日：2019-07-05
发明人： Ai Yanagihara , Kenya Suzuki , Takashi Go , Keita Yamaguchi
摘要： An optical switch is configured by providing a planar lightwave circuit layer on a top surface of a Si substrate. The circuit layer forms, on the top surface of the substrate, an optical waveguide including an underclad layer, an optical waveguide core, and an overclad layer. The optical waveguide is provided to have a structure configuring a Mach-Zehnder interferometer. A heater is provided at a position just above an arm of the core on the top surface of the clad layer, and power supply electric wires are electrically connected to both ends of the heater. In a local portion including an interface between the clad layer and the top surface of the substrate, trench structure portions as concave grooves are provided.
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公开(公告)号：US20220286205A1
公开(公告)日：2022-09-08
申请号：US17675818
申请日：2022-02-18
摘要： An optical communications system includes a laser transmitter to generate an optical signal and a first optical fiber network coupled to transmit the optical signal from the laser transmitter system. A first latchable, asymmetric coupler is disposed along the first optical fiber network to receive the optical signal, and has a first tap output that receives a selected and alterable first fraction of the optical signal. A second latchable, asymmetric coupler is disposed along the first optical fiber network to receive the optical signal from the first latchable asymmetric coupler and has a second tap output that receives a selected and alterable second fraction of the optical signal incident at the second latchable. In certain embodiments the first and second couplers are capable of operating at any of at least three tapping fractions.
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