Patents by Inventor Weizhuo Li
Weizhuo Li has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11888527Abstract: A system includes an optical source, an integrated circuit, an optical fiber, and a polarization controller. The optical source is arranged emit an optical signal. The integrated circuit includes a mirror. The optical fiber carries the optical signal from the optical source to the integrated circuit. The mirror reflects a transverse magnetic component of the optical signal through the optical fiber to the optical source. The polarization controller adjusts, based on the transverse magnetic component, the optical signal emitted from the optical source such that the transverse magnetic component is reduced.Type: GrantFiled: September 1, 2022Date of Patent: January 30, 2024Assignee: Cisco Technology, Inc.Inventors: Norbert Schlepple, Weizhuo Li, Jean-Luc J. Tambasco
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Publication number: 20230384522Abstract: 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.Type: ApplicationFiled: August 11, 2023Publication date: November 30, 2023Inventors: Shiyi CHEN, Tao LING, Weizhuo LI, Mark A. WEBSTER
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Patent number: 11762150Abstract: 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.Type: GrantFiled: May 12, 2022Date of Patent: September 19, 2023Assignee: Cisco Technology, Inc.Inventors: Shiyi Chen, Tao Ling, Weizhuo Li, Mark A. Webster
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Publication number: 20230251427Abstract: An apparatus includes a ribbon, an optical waveguide, and an IC. The ribbon includes a first end. The optical waveguide is disposed within the ribbon and terminates at the first end. The IC includes a curved surface. The first end of the ribbon bends to mate with the curved surface such that the optical waveguide is optically coupled to a corresponding waveguide in the IC.Type: ApplicationFiled: February 10, 2022Publication date: August 10, 2023Inventors: Norbert SCHLEPPLE, Vipulkumar K. PATEL, Weizhuo LI
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Publication number: 20220269004Abstract: 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.Type: ApplicationFiled: May 12, 2022Publication date: August 25, 2022Inventors: Shiyi CHEN, Tao LING, Weizhuo LI, Mark A. WEBSTER
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Patent number: 11366270Abstract: 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.Type: GrantFiled: April 30, 2020Date of Patent: June 21, 2022Assignee: Cisco Technology, Inc.Inventors: Shiyi Chen, Tao Ling, Weizhuo Li, Mark A. Webster
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Publication number: 20210341672Abstract: 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.Type: ApplicationFiled: April 30, 2020Publication date: November 4, 2021Inventors: Shiyi CHEN, Tao LING, Weizhuo LI, Mark A. WEBSTER
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Patent number: 10705313Abstract: A system and related method and assembly are disclosed. The system comprises one or more optical fibers configured to propagate one or more optical signals. The system further comprises at least a first cylindrical lens element fixedly connected with the one or more optical fibers and configured to expand the one or more optical signals along a predefined dimension. The system further comprises at least a second cylindrical lens element optically coupled with the first cylindrical lens element and configured to condense the expanded one or more optical signals along the predefined dimension.Type: GrantFiled: February 23, 2018Date of Patent: July 7, 2020Assignee: Cisco Technology, Inc.Inventors: Vipulkumar Patel, Sean P. Anderson, Weizhuo Li
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Publication number: 20190265437Abstract: A system and related method and assembly are disclosed. The system comprises one or more optical fibers configured to propagate one or more optical signals. The system further comprises at least a first cylindrical lens element fixedly connected with the one or more optical fibers and configured to expand the one or more optical signals along a predefined dimension. The system further comprises at least a second cylindrical lens element optically coupled with the first cylindrical lens element and configured to condense the expanded one or more optical signals along the predefined dimension.Type: ApplicationFiled: February 23, 2018Publication date: August 29, 2019Inventors: Vipulkumar PATEL, Sean P. ANDERSON, Weizhuo LI
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Patent number: 9971096Abstract: Embodiments herein include an optical system that passively aligns a fiber array connector (FAC) to a waveguide in a photonic chip. A substrate of the FAC is machined or etched to include multiple grooves along a common axis or plane to hold optical waveguides, or more specifically, the fibers of the optical cables in the FAC. To align the fibers to the photonic chip, one of the fibers is disposed in an alignment trench which has a width that is substantially the same as the diameter of the fiber. When the fiber registers with the alignment trench, the fiber is aligned with a waveguide disposed at the end of the trench. Because the pitch between the fibers can be precisely controlled, aligning one of the fibers using the alignment trench results in the other fibers becoming passively aligned to respective waveguides in the photonic chip.Type: GrantFiled: June 1, 2016Date of Patent: May 15, 2018Assignee: Cisco Technology, Inc.Inventors: Kal Shastri, Rao Yelamarty, Neeraj Dubey, David Piede, Weizhuo Li
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Publication number: 20170351031Abstract: Embodiments herein include an optical system that passively aligns a fiber array connector (FAC) to a waveguide in a photonic chip. A substrate of the FAC is machined or etched to include multiple grooves along a common axis or plane to hold optical waveguides, or more specifically, the fibers of the optical cables in the FAC. To align the fibers to the photonic chip, one of the fibers is disposed in an alignment trench which has a width that is substantially the same as the diameter of the fiber. When the fiber registers with the alignment trench, the fiber is aligned with a waveguide disposed at the end of the trench. Because the pitch between the fibers can be precisely controlled, aligning one of the fibers using the alignment trench results in the other fibers becoming passively aligned to respective waveguides in the photonic chip.Type: ApplicationFiled: June 1, 2016Publication date: December 7, 2017Inventors: Kal Shastri, Rao YELAMARTY, Neeraj DUBEY, David PIEDE, Weizhuo LI
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Patent number: 9784920Abstract: An optical coupling may involve orienting a waveguide and a lens such that light rays are focused on a surface. The lens may involve the use of a material having a variable refractive index to focus rays of light along first axis and a curved surface to focus the rays of light along a second axis.Type: GrantFiled: July 11, 2016Date of Patent: October 10, 2017Assignee: Cisco Technology, Inc.Inventors: Sean Anderson, Weizhuo Li, Vipulkumar Patel
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Publication number: 20160320563Abstract: An optical coupling may involve orienting a waveguide and a lens such that light rays are focused on a surface. The lens may involve the use of a material having a variable refractive index to focus rays of light along first axis and a curved surface to focus the rays of light along a second axis.Type: ApplicationFiled: July 11, 2016Publication date: November 3, 2016Inventors: Sean Anderson, Weizhuo Li, Vipulkumar Patel
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Patent number: 9411105Abstract: An optical coupling may involve orienting a waveguide and a lens such that light rays are focused on a surface. The lens may involve the use of a material having a variable refractive index to focus rays of light along first axis and a curved surface to focus the rays of light along a second axis.Type: GrantFiled: July 14, 2014Date of Patent: August 9, 2016Assignee: Cisco Technology, Inc.Inventors: Sean Anderson, Weizhuo Li, Vipulkumar Patel
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Publication number: 20160011375Abstract: An optical coupling may involve orienting a waveguide and a lens such that light rays are focused on a surface. The lens may involve the use of a material having a variable refractive index to focus rays of light along first axis and a curved surface to focus the rays of light along a second axis.Type: ApplicationFiled: July 14, 2014Publication date: January 14, 2016Inventors: Sean Anderson, Weizhuo Li, Vipulkumar Patel
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Patent number: 7966887Abstract: A high-temperature pressure sensor is provided. The sensor includes a quartz substrate with a cavity etched on one side. A reflective coating is deposited on at least a portion of the cavity. The sensor further includes a ferrule section coupled to the quartz substrate with the cavity therebetween. The cavity exists in a vacuum, and cavity gap is formed between the reflective metal coating and a surface of the ferrule. The sensor also includes an optical fiber enclosed by the ferrule section and extending from the cavity gap to an opposing end of the ferrule section and a metal casing surrounding the ferrule section and the quartz substrate with an opening for said optical fiber extending therefrom. The pressure applied to the quartz substrate changes the dimensions of the cavity gap and a reflected signal from the reflective coating is processed as a pressure.Type: GrantFiled: March 26, 2009Date of Patent: June 28, 2011Assignee: General Electric CompanyInventors: Aaron Jay Knobloch, David William Vernooy, Weizhuo Li, David Mulford Shaddock, Stacey Joy Kennerly
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Publication number: 20100242628Abstract: A high-temperature pressure sensor is provided. The sensor includes a quartz substrate with a cavity etched on one side. A reflective coating is deposited on at least a portion of the cavity. The sensor further includes a ferrule section coupled to the quartz substrate with the cavity therebetween. The cavity exists in a vacuum, and cavity gap is formed between the reflective metal coating and a surface of the ferrule. The sensor also includes an optical fiber enclosed by the ferrule section and extending from the cavity gap to an opposing end of the ferrule section and a metal casing surrounding the ferrule section and the quartz substrate with an opening for said optical fiber extending therefrom. The pressure applied to the quartz substrate changes the dimensions of the cavity gap and a reflected signal from the reflective coating is processed as a pressure.Type: ApplicationFiled: March 26, 2009Publication date: September 30, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Aaron Jay Knobloch, David William Vernooy, Weizhuo Li, David Mulford Shaddock, Stacey Joy Kennerly