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公开(公告)号：US20220091472A1
公开(公告)日：2022-03-24
申请号：US17294991
申请日：2019-12-11
摘要： Provided is an optical switch element capable of adjusting an output strength of light output from an optical switch to a fixed level. The optical switch element includes: an optical coupler configured to divide an input light into N fractions of light and output the N fractions of light, where N represents an integer equal to or larger than 2; N branch optical waveguides connected to an output side of the optical coupler; N light absorption gates connected to the respective N branch optical waveguides; and N output optical waveguides connected to the respective N light absorption gates, the optical coupler, the N branch optical waveguides, the N light absorption gates, and the N output optical waveguides being connected to one another in order, the N light absorption gates each being controlled to adjust an output strength of transmitted light output from the N output optical waveguides based on a loss amount acquired in advance by a light absorption effect or light amplification effect of the N light absorption gates.
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公开(公告)号：US20200064556A1
公开(公告)日：2020-02-27
申请号：US16608084
申请日：2018-04-19
IPC分类号： G02B6/35
摘要： There is provided an N×N optical switch configured by connection between output ports of input side optical switches and input ports of output side optical switches by using optical waveguides on the same substrate and capable of reducing the crossing loss in a port connected to an optical waveguide having a maximum number of crossings and a higher crossing loss. In a 4×4 optical switch (10) having four input side 1×4 optical switches (SW11-SW14) each having four output ports (P1-P4), four output side 4×1 optical switches (SW21-SW24) each having four input ports (Q1-Q4), and connection optical waveguides (OW) connecting the output ports and the input ports, part of the connection optical waveguides OW are allowed to cross two or more of the other connection optical waveguides OW in one point.
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公开(公告)号：US12117712B2
公开(公告)日：2024-10-15
申请号：US17769553
申请日：2019-10-18
CPC分类号： G02F1/3136 , G02F1/035 , G02F1/212 , G02F1/3138
摘要： An optical switch is provided which is capable of driving control by the same FPGA and the same driving circuit configuration, and hence is capable of driving at a high speed and a low consumption power. The optical switch of the present disclosure is a 1×N optical switch having a structure in which with respect to an optical switch, a driving circuit of the optical switch is integrated in the vicinity of a control electrode of the optical switch. The optical switch includes a plurality of 2×2 optical switches and N optical gates. Different bias voltages (Vb) are set between the optical switches and the optical gates, and a driver for the 2×2 optical switch of the driving circuit and a driver for the optical gate are of the same circuit form.
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公开(公告)号：US12111559B2
公开(公告)日：2024-10-08
申请号：US17768774
申请日：2019-10-16
CPC分类号： G02F1/3136 , G02B6/12 , G02F1/015 , 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：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：US11921397B2
公开(公告)日：2024-03-05
申请号：US17294991
申请日：2019-12-11
摘要： Provided is an optical switch element capable of adjusting an output strength of light output from an optical switch to a fixed level. The optical switch element includes: an optical coupler configured to divide an input light into N fractions of light and output the N fractions of light, where N represents an integer equal to or larger than 2; N branch optical waveguides connected to an output side of the optical coupler; N light absorption gates connected to the respective N branch optical waveguides; and N output optical waveguides connected to the respective N light absorption gates, the optical coupler, the N branch optical waveguides, the N light absorption gates, and the N output optical waveguides being connected to one another in order, the N light absorption gates each being controlled to adjust an output strength of transmitted light output from the N output optical waveguides based on a loss amount acquired in advance by a light absorption effect or light amplification effect of the N light absorption gates.
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公开(公告)号：US20230194952A1
公开(公告)日：2023-06-22
申请号：US17769553
申请日：2019-10-18
IPC分类号： G02F1/313
CPC分类号： G02F1/3136 , G02F1/3138
摘要： An optical switch is provided which is capable of driving control by the same FPGA and the same driving circuit configuration, and hence is capable of driving at a high speed and a low consumption power. The optical switch of the present disclosure is a 1×N optical switch having a structure in which with respect to an optical switch, a driving circuit of the optical switch is integrated in the vicinity of a control electrode of the optical switch. The optical switch includes a plurality of 2×2 optical switches and N optical gates. Different bias voltages (Vb) are set between the optical switches and the optical gates, and a driver for the 2×2 optical switch of the driving circuit and a driver for the optical gate are of the same circuit form
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