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公开(公告)号：US20250035839A1
公开(公告)日：2025-01-30
申请号：US18361710
申请日：2023-07-28
Applicant: Cisco Technology, Inc.
Inventor： Jean-Luc J. TAMBASCO , Mark A. WEBSTER
Abstract: Embodiments herein describe a PSR that includes a rotator with two layers that are separated by a dielectric layer. A first layer of the rotator includes a first waveguide formed from a lower refractive index material (e.g., SiN) while a second layer of the rotator includes a second waveguide formed from a higher refractive index material (e.g., Si). An optical signal, which can include two optical modes (e.g., TE and TM modes), is then introduced into the first layer where the TM mode is rotated. At the end of the rotator, the first waveguide (which is the same waveguide that received the optical signal) includes the optical signal which is now in the same optical mode. That is, one of the optical modes is rotated so that the light is the same type of optical mode (e.g., TE).
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公开(公告)号：US20230384522A1
公开(公告)日：2023-11-30
申请号：US18448429
申请日：2023-08-11
Applicant: Cisco Technology, Inc.
Inventor： Shiyi CHEN , Tao LING , Weizhuo LI , Mark A. WEBSTER
CPC classification number: G02B6/29304 , G02B6/02261 , G02B6/3526 , G02B6/3514 , G02B6/30 , G02B6/29311 , G02B6/124 , G02B6/1225
Abstract: Embodiments include a fiber to photonic chip coupling system including a collimating lens which collimate a light transmitted from a light source and an optical grating including a plurality of grating sections. The system also includes an optical dispersion element which separates the collimated light from the collimating lens into a plurality of light beams and direct each of the plurality of light beams to a respective section of the plurality of grating sections. Each light beam in the plurality of light beams is diffracted from the optical dispersion element at a different wavelength a light beam of the plurality of light beams is directed to a respective section of the plurality of grating sections at a respective incidence angle based on the wavelength of the light beam of the plurality of light beams to provide optimum grating coupling.
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13.发明公开公开(公告)号：US20230243718A1
公开(公告)日：2023-08-03
申请号：US18297412
申请日：2023-04-07
Applicant: Cisco Technology, Inc.
Inventor： Xunyuan ZHANG , Ravi S. TUMMIDI , Tony P. POLOUS , Mark A. WEBSTER
CPC classification number: G01M11/30 , G02B6/12007 , G02B2006/12164 , G02B2006/12061 , G02B2006/12145
Abstract: Electrical test of optical components via metal-insulator-semiconductor capacitor structures is provided via a plurality of optical devices including a first material embedded in a second material, wherein each optical device is associated with a different thickness range of a plurality of thickness ranges for the first material; a first capacitance measurement point including the first material embedded in the second material; and a second capacitance measurement point including a region from which the first material has been replaced with the second material.
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公开(公告)号：US20210278589A1
公开(公告)日：2021-09-09
申请号：US16809446
申请日：2020-03-04
Applicant: Cisco Technology, Inc.
Inventor： Vipulkumar K. PATEL , Mark A. WEBSTER , Craig S. APPEL
Abstract: Embodiments herein describe providing a decoupling capacitor on a first wafer (or substrate) that is then bonded to a second wafer to form an integrated decoupling capacitor. Using wafer bonding means that the decoupling capacitor can be added to the second wafer without having to take up space in the second wafer. In one embodiment, after bonding the first and second wafers, one or more vias are formed through the second wafer to establish an electrical connection between the decoupling capacitor and bond pads on a first surface of the second wafer. An electrical IC can then be flip chipped bonded to the first surface. As part of coupling the decoupling capacitor to the electrical IC, the decoupling capacitor is connected between the rails of a power source (e.g., VDD and VSS) that provides power to the electrical IC.
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公开(公告)号：US20210141154A1
公开(公告)日：2021-05-13
申请号：US16677404
申请日：2019-11-07
Applicant: Cisco Technology, Inc.
Inventor： Sandeep RAZDAN , Vipulkumar K. PATEL , Mark A. WEBSTER , Matthew J. TRAVERSO
IPC: G02B6/122 , G02B6/30 , H01L23/48 , H01L23/498 , H01L21/48 , H01L21/762
Abstract: Aspects described herein include a method comprising bonding a photonic wafer with an electronic wafer to form a wafer assembly, removing a substrate of the wafer assembly to expose a surface of the photonic wafer or of the electronic wafer, forming electrical connections between metal layers of the photonic wafer and metal layers of the electronic wafer, and adding an interposer wafer to the wafer assembly by bonding the interposer wafer with the wafer assembly at the exposed surface. The interposer wafer comprises through-vias that are electrically coupled with the metal layers of one or both of the photonic wafer and the electronic wafer. The method further comprises dicing the wafer assembly to form a plurality of dies. A respective edge coupler of each die is optically exposed at an interface formed by the dicing.
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Patent Agency Ranking
公开(公告)号：US20200106526A1
公开(公告)日：2020-04-02
申请号：US16700722
申请日：2019-12-02
Applicant: Cisco Technology, Inc.
Inventor： Sean P. ANDERSON , Mark A. WEBSTER
Abstract: Improvements in extinguishing optical signals in silicon photonics may be achieved by supplying a test signal of a known characteristics to a Photonic Element (PE) to extinguish the test signal via a first phase shifter and intensity modulator on a first arm of the PE and a second phase shifter and intensity modulator on a second arm of the PE; sweeping through a plurality of voltages at the first intensity modulator to identify a first voltage that is associated with an extinction ratio at an output of the PE that satisfies an induced loss threshold and a second voltage that is associated with an induced loss in the test signal at the output of the PE that satisfies an extinction ratio threshold; and setting the PE to provide an operational voltage to the first intensity modulator based on the first voltage and the second voltage.
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公开(公告)号：US20240337870A1
公开(公告)日：2024-10-10
申请号：US18297321
申请日：2023-04-07
Applicant: Cisco Technology, Inc.
IPC: G02F1/015
CPC classification number: G02F1/0154 , G02F2201/063 , G02F2202/20
Abstract: Embodiments herein describe a photonic platform having a chiplet with a Pockels effect electro-optic layer made of LN or BTO and a substrate. The chiplet is bonded to a photonic wafer which includes a waveguide. In this manner, a ridge waveguide formed by the Pockels effect electro-optic layer and the waveguide utilizes electro-optic effects to tune a signal.
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公开(公告)号：US20220269004A1
公开(公告)日：2022-08-25
申请号：US17663158
申请日：2022-05-12
Applicant: Cisco Technology, Inc.
Inventor： Shiyi CHEN , Tao LING , Weizhuo LI , Mark A. WEBSTER
Abstract: Embodiments include a fiber to photonic chip coupling system including a collimating lens which collimate a light transmitted from a light source and an optical grating including a plurality of grating sections. The system also includes an optical dispersion element which separates the collimated light from the collimating lens into a plurality of light beams and direct each of the plurality of light beams to a respective section of the plurality of grating sections. Each light beam in the plurality of light beams is diffracted from the optical dispersion element at a different wavelength a light beam of the plurality of light beams is directed to a respective section of the plurality of grating sections at a respective incidence angle based on the wavelength of the light beam of the plurality of light beams to provide optimum grating coupling.
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公开(公告)号：US20210286190A1
公开(公告)日：2021-09-16
申请号：US17301968
申请日：2021-04-20
Applicant: Cisco Technology, Inc.
Inventor： Tao LING , Yi Ho LEE , Ravi S. TUMMIDI , Mark A. WEBSTER
Abstract: Aspects described herein include an optical apparatus comprising an input port configured to receive an optical signal comprising a plurality of wavelengths, and a plurality of output ports. Each output port is configured to output a respective wavelength of the plurality of wavelengths. The optical apparatus further comprises a first plurality of two-mode Bragg gratings in a cascaded arrangement. Each grating of the first plurality of two-mode Bragg gratings is configured to reflect a respective wavelength of the plurality of wavelengths toward a respective output port of the plurality of output ports, and transmit any remaining wavelengths of the plurality of wavelengths.
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公开(公告)号：US20210231875A1
公开(公告)日：2021-07-29
申请号：US16751994
申请日：2020-01-24
Applicant: Cisco Technology, Inc.
Inventor： Dominic F. SIRIANI , Vipulkumar K. PATEL , Matthew J. TRAVERSO , Mark A. WEBSTER
IPC: G02B6/293
Abstract: Aspects described herein include an optical waveguide emitter that includes a first optical waveguide and a second optical waveguide that are evanescently coupled and collectively configured to selectively propagate only a first mode of a plurality of optical modes. Each of the first optical waveguide and the second optical waveguide extend through an input waveguide section, a turning waveguide section, and an output waveguide section. One or more of the input waveguide section, the turning waveguide section, and the output waveguide section includes an optically active region. The optical waveguide emitter further includes a refractive index-increasing feature in the turning waveguide section.
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