Patents by Inventor Guoliang Li

Guoliang 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).

  • Integrated photonics mode expander
    Patent number: 9977188
    Abstract: A method of fabricating a waveguide mode expander includes providing a substrate including a waveguide, bonding a chiplet including multiple optical material layers in a mounting region adjacent an output end of the waveguide, and selectively removing portions of the chiplet to form tapered stages that successively increase in number and lateral size from a proximal end to a distal end of the chiplet. The first optical material layer supports an input mode substantially the same size as a mode exiting the waveguide. One or more of the overlying layers, when combined with the first layer, support a larger, output optical mode size. Each tapered stage of the mode expander is formed of a portion of a respective layer of the chiplet. The first layer and the tapered stages form a waveguide mode expander that expands an optical mode of light traversing the chiplet.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: May 22, 2018
    Assignee: Skorpios Technologies, Inc.
    Inventors: Damien Lambert, Guoliang Li, John Zyskind, Stephen B. Krasulick
  • TUNABLE LASER WITH DIRECTIONAL COUPLER
    Publication number: 20180123318
    Abstract: A tunable laser has a first mirror, a second mirror, a gain medium, and a directional coupler. The first mirror and the second mirror form an optical resonator. The gain medium and the directional coupler are, at least partially, in an optical path of the optical resonator. The first mirror and the second mirror comprise binary super gratings. Both the first mirror and the second mirror have high reflectivity. The directional coupler provides an output coupler for the tunable laser.
    Type: Application
    Filed: August 24, 2017
    Publication date: May 3, 2018
    Applicant: Skorpios Technologies, Inc.
    Inventors: Hacene Chaouch, Guoliang Li
  • Integrated multistage taper coupler for waveguide to fiber coupling
    Patent number: 9933575
    Abstract: A waveguide coupler has a compression region and an expansion region for coupling light between a silicon waveguide and an optical fiber. The compression region receives light from the silicon waveguide and compresses an optical mode of the light. Light is transmitted from the compression region to an expansion region. The expansion region expands the light to have a larger cross section. Light is then transmitted to the optical fiber.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: April 3, 2018
    Assignee: Skorpios Technologies, Inc.
    Inventors: Nikhil Kumar, Guoliang Li, Stephen Krasulick
  • Method and system for widely tunable laser
    Patent number: 9917417
    Abstract: A widely tunable laser system includes a substrate, first and second lasers, an output and at least one optical combining device. The first laser is integrated with the substrate, includes a gain medium that includes a first material, and emits light at a wavelength that is tunable within a first wavelength range that is determined at least in part by the first material. The second laser is integrated with the substrate, includes a gain medium that includes a second material, and emits light at a wavelength that is tunable within a second wavelength range that is different from the first wavelength range that is determined at least in part by the second material. The at least one optical combining device is configured to direct light from one or both of the first laser and the second laser to the output.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: March 13, 2018
    Assignee: Skorpios Technologies, Inc.
    Inventors: Guoliang Li, Stephen B. Krasulick, Damien Lambert
  • ON-CHIP HIGH CAPACITANCE TERMINATION FOR TRANSMITTERS
    Publication number: 20180067343
    Abstract: A modulator and a capacitor are integrated on a semiconductor substrate for modulating a laser beam. Integrating the capacitor on the substrate reduces parasitic inductance for high-speed optical communication.
    Type: Application
    Filed: July 21, 2017
    Publication date: March 8, 2018
    Applicant: Skorpios Technologies, Inc.
    Inventors: Stephen B. Krasulick, Damien Lambert, Andrew Bonthron, Guoliang Li
  • Waveguide mode expander using amorphous silicon
    Patent number: 9885832
    Abstract: A waveguide mode expander couples a smaller optical mode in a semiconductor waveguide to a larger optical mode in an optical fiber. The waveguide mode expander comprises a shoulder made of crystalline silicon and a ridge made of non-crystalline silicon (e.g., amorphous silicon). In some embodiments, the ridge of the waveguide mode expander has a plurality of stages, the plurality of stages have different widths and/or thicknesses at a given cross section.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: February 6, 2018
    Assignee: Skorpios Technologies, Inc.
    Inventors: Damien Lambert, Nikhil Kumar, Elton Marchena, Daming Liu, Guoliang Li, John Zyskind
  • WAVEGUIDE MODE EXPANDER HAVING AN AMORPHOUS-SILICON SHOULDER
    Publication number: 20170351028
    Abstract: A waveguide mode expander couples a smaller optical mode in a semiconductor waveguide to a larger optical mode in an optical fiber. The waveguide mode expander comprises a shoulder and a ridge. In some embodiments, the ridge of the waveguide mode expander has a plurality of stages, the plurality of stages having different widths at a given cross section.
    Type: Application
    Filed: April 14, 2017
    Publication date: December 7, 2017
    Applicant: Skorpios Technologies, Inc.
    Inventors: Guoliang Li, Damien Lambert, Nikhil Kumar
  • INTEGRATED MULTISTAGE TAPER COUPLER FOR WAVEGUIDE TO FIBER COUPLING
    Publication number: 20170351033
    Abstract: A waveguide coupler has a compression region and an expansion region for coupling light between a silicon waveguide and an optical fiber. The compression region receives light from the silicon waveguide and compresses an optical mode of the light. Light is transmitted from the compression region to an expansion region. The expansion region expands the light to have a larger cross section. Light is then transmitted to the optical fiber.
    Type: Application
    Filed: April 12, 2017
    Publication date: December 7, 2017
    Applicant: Skorpios Technologies, Inc.
    Inventors: Nikhil Kumar, Guoliang Li, Stephen Krasulick
  • Tunable laser with directional coupler
    Patent number: 9774164
    Abstract: A tunable laser has a first mirror, a second mirror, a gain medium, and a directional coupler. The first mirror and the second mirror form an optical resonator. The gain medium and the directional coupler are, at least partially, in an optical path of the optical resonator. The first mirror and the second mirror comprise binary super gratings. Both the first mirror and the second mirror have high reflectivity. The directional coupler provides an output coupler for the tunable laser.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: September 26, 2017
    Assignee: Skorpios Technologies, Inc.
    Inventors: Hacene Chaouch, Guoliang Li
  • WIDE SHOULDER, HIGH ORDER MODE FILTER FOR THICK-SILICON WAVEGUIDES
    Publication number: 20170242192
    Abstract: An optical filter for attenuating higher-order modes in an optical waveguide includes a shoulder slab formed of a first material having a first index of refraction and disposed on a second material having a second index of refraction, the first index of refraction being higher than the second index of refraction. The shoulder slab defines a near end having a first width, an intermediate section, adjacent to the first end section, and a far end section, adjacent to the intermediate section and opposite the first end section along a direction of beam propagation. The optical filter also includes a waveguide ridge, formed of the first material and disposed atop the shoulder slab, that traverses the shoulder slab, and is configured to guide light of a fundamental mode along the direction of beam propagation from the near end section to the far end section.
    Type: Application
    Filed: May 5, 2017
    Publication date: August 24, 2017
    Applicant: Skorpios Technologies, Inc.
    Inventors: Majid Sodagar, Murtaza Askari, Guoliang Li
  • Ring-modulated laser
    Patent number: 9735542
    Abstract: An optical source is described. This optical source includes a semiconductor optical amplifier, with a semiconductor other than silicon, which provides a gain medium. In addition, a photonic chip, optically coupled to the semiconductor optical amplifier, includes: an optical waveguide that conveys the optical signal; and a pair of ring-resonator modulators that modulate the optical signal. Furthermore, the pair of ring-resonator modulators is included within an optical cavity in the optical source. For example, the optical cavity may be defined by a reflective coating on one edge of the semiconductor optical amplifier and a reflector on one end of the optical waveguide. Alternatively, the optical cavity may be defined by reflectors on ends of the optical waveguide.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: August 15, 2017
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Guoliang Li, Ashok V. Krishnamoorthy, Xuezhe Zheng, Ying Luo
  • HIGH-SPEED OPTICAL TRANSMITTER WITH A SILICON SUBSTRATE
    Publication number: 20170230117
    Abstract: A 400 Gb/s transmitter is integrated on a silicon substrate. The transmitter uses four gain chips, sixteen lasers, four modulators to modulate the sixteen lasers at 25 Gb/s, and four multiplexers to produce four optical outputs. Each optical output can transmit at 100 Gb/s to produce a 400 Gb/s transmitter. Other variations are also described.
    Type: Application
    Filed: February 7, 2017
    Publication date: August 10, 2017
    Applicant: Skorpios Technologies, Inc.
    Inventors: Guoliang Li, Stephen B. Krasulick, Samir Desai
  • Wide shoulder, high order mode filter for thick-silicon waveguides
    Patent number: 9664855
    Abstract: An optical filter for attenuating higher-order modes in an optical waveguide includes a shoulder slab formed of a first material having a first index of refraction and disposed on a second material having a second index of refraction, the first index of refraction being higher than the second index of refraction. The shoulder slab defines a near end having a first width, an intermediate section, adjacent to the first end section, and a far end section, adjacent to the intermediate section and opposite the first end section along a direction of beam propagation. The optical filter also includes a waveguide ridge, formed of the first material and disposed atop the shoulder slab, that traverses the shoulder slab, and is configured to guide light of a fundamental mode along the direction of beam propagation from the near end section to the far end section.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: May 30, 2017
    Assignee: Skorpios Technologies, Inc.
    Inventors: Majid Sodagar, Murtaza Askari, Guoliang Li
  • Waveguide mode expander having an amorphous-silicon shoulder
    Patent number: 9658401
    Abstract: A waveguide mode expander couples a smaller optical mode in a semiconductor waveguide to a larger optical mode in an optical fiber. The waveguide mode expander comprises a shoulder and a ridge. In some embodiments, the ridge of the waveguide mode expander has a plurality of stages, the plurality of stages having different widths at a given cross section.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: May 23, 2017
    Assignee: SKORPIOS TECHNOLOGIES, INC.
    Inventors: Guoliang Li, Damien Lambert, Nikhil Kumar
  • METHOD AND SYSTEM FOR WIDELY TUNABLE LASER
    Publication number: 20170110850
    Abstract: A widely tunable laser system includes a substrate, first and second lasers, an output and at least one optical combining device. The first laser is integrated with the substrate, includes a gain medium that includes a first material, and emits light at a wavelength that is tunable within a first wavelength range that is determined at least in part by the first material. The second laser is integrated with the substrate, includes a gain medium that includes a second material, and emits light at a wavelength that is tunable within a second wavelength range that is different from the first wavelength range that is determined at least in part by the second material. The at least one optical combining device is configured to direct light from one or both of the first laser and the second laser to the output.
    Type: Application
    Filed: October 4, 2016
    Publication date: April 20, 2017
    Applicant: Skorpios Technologies, Inc.
    Inventors: Guoliang Li, Stephen B. Krasulick, Damien Lambert
  • Integrated multistage taper coupler for waveguide to fiber coupling
    Patent number: 9625651
    Abstract: A waveguide coupler has a compression region and an expansion region for coupling light between a silicon waveguide and an optical fiber. The compression region receives light from the silicon waveguide and compresses an optical mode of the light. Light is transmitted from the compression region to an expansion region. The expansion region expands the light to have a larger cross section. Light is then transmitted to the optical fiber.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: April 18, 2017
    Assignee: Skorpios Technologies, Inc.
    Inventors: Nikhil Kumar, Guoliang Li, Stephen Krauslick
  • Hybrid integration of edge-coupled chips
    Patent number: 9618709
    Abstract: A technique for fabricating a hybrid optical source is described. During this fabrication technique, a III-V compound-semiconductor active gain medium is integrated with a silicon-on-insulator (SOI) chip (or wafer) using edge coupling to form a co-planar hybrid optical source. Using a backside etch-assisted cleaving technique, and a temporary transparent substrate with alignment markers, a III-V compound-semiconductor chip with proper edge polish and coating can be integrated with a processed SOI chip (or wafer) with accurate alignment. This fabrication technique may significantly reduce the alignment complexity when fabricating the hybrid optical source, and may enable wafer-scale integration.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: April 11, 2017
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Xuezhe Zheng, Ivan Shubin, Ying Luo, Guoliang Li, Ashok V. Krishnamoorthy
  • WIDE SHOULDER, HIGH ORDER MODE FILTER FOR THICK-SILICON WAVEGUIDES
    Publication number: 20170090118
    Abstract: An optical filter for attenuating higher-order modes in an optical waveguide includes a shoulder slab formed of a first material having a first index of refraction and disposed on a second material having a second index of refraction, the first index of refraction being higher than the second index of refraction. The shoulder slab defines a near end having a first width, an intermediate section, adjacent to the first end section, and a far end section, adjacent to the intermediate section and opposite the first end section along a direction of beam propagation. The optical filter also includes a waveguide ridge, formed of the first material and disposed atop the shoulder slab, that traverses the shoulder slab, and is configured to guide light of a fundamental mode along the direction of beam propagation from the near end section to the far end section.
    Type: Application
    Filed: September 12, 2016
    Publication date: March 30, 2017
    Applicant: Skorpios Technologies, Inc.
    Inventors: Majid Sodagar, Murtaza Askari, Guoliang Li
  • INFORMATION REMINDING METHOD AND APPARATUS, AND ELECTRONIC TERMINAL
    Publication number: 20170094065
    Abstract: Systems, methods, and software can be used to provide reminding information. In some aspect, a special event is determined to occur. In response to determining that the special event occurs, a network type currently used by a device is acquired. Historical network usage information corresponding to the network type is determined. The network type and a traffic usage situation is outputted based on the historical usage information.
    Type: Application
    Filed: April 18, 2014
    Publication date: March 30, 2017
    Inventors: Zijun LI, Jin HUANG, Fen YANG, Guoliang LI
  • Optical reflector based on a directional coupler and a coupled optical loop
    Patent number: 9575256
    Abstract: An optical device includes an optical reflector based on a coupled-loopback optical waveguide. In particular, an input port, an output port and an optical loop in arms of the optical reflector are optically coupled to a directional coupler. The directional coupler evanescently couples an optical signal between the arms. For example, the directional coupler may include: a multimode interference coupler and/or a Mach-Zehnder Interferometer (MZI). Moreover, destructive interference during the evanescent coupling determines the reflection and transmission power coefficients of the optical reflector.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: February 21, 2017
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Guoliang Li, Xuezhe Zheng, Ying Luo, Ashok V. Krishnamoorthy