Patents by Inventor Jonathan EDGAR

Jonathan EDGAR 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).

  • Patent number: 12290794
    Abstract: A shaped sorbent is described comprising a plurality of layers of photopolymerised resin containing particles of a sorbent material. The shaped sorbent may be used as a getter for use in gettering one or more contaminants in a sealed enclosure.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: May 6, 2025
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Alan Bootland, David Davis, Jonathan Edgar, Jonathon Higgins
  • Patent number: 12287512
    Abstract: A polarization splitter rotator includes a first lower waveguide and a second lower waveguide disposed on a first layer, the first lower waveguide and the second lower waveguide, in a first portion of the device, widening symmetrically as the first lower waveguide and the second lower waveguide extend from an input end of the device to an output end of the device, and, in a second portion of the device, at least the second lower waveguide widening further, asymmetrically, from the first lower waveguide, and a bus waveguide disposed on a second layer, above the first layer, at least partially overlapping portions of the first lower waveguide and the second lower waveguide.
    Type: Grant
    Filed: September 2, 2022
    Date of Patent: April 29, 2025
    Assignee: CISCO TECHNOLOGY, INC.
    Inventor: Jonathan Edgar Roth
  • Publication number: 20240402430
    Abstract: Disclosed is an adiabatic optical coupler. The adiabatic optical coupler includes a tapered input region which includes a first waveguide core and a second waveguide core. The first and second waveguide cores are separated at the tapered input region. The adiabatic optical coupler also includes a narrow coupling region extending from the tapered input region. In the narrow coupling region, the first and second waveguide cores are brought within close proximity and a third waveguide core is positioned between the first and second waveguide cores. The third waveguide core defines a longitudinal axis. The adiabatic optical coupler also includes a flared output region extending from the narrow coupling region. In the flared output region, the first, second, and third waveguide cores are separated.
    Type: Application
    Filed: May 30, 2023
    Publication date: December 5, 2024
    Applicant: Cisco Technology, Inc.
    Inventors: Jonathan Edgar ROTH, Qianfan XU, Long CHEN
  • Publication number: 20240344873
    Abstract: A measuring device for measuring quantities of one or more substances includes a receptacle body for holding the substances and a top edge formed around the receptacle body. The top edge defines a first plane and the receptacle body defines a first volume of the substances when filled to the top edge. A leveling edge is formed along the top edge configured to allow excess substance to be leveled off. An interior measuring ledge protrudes from the receptacle body into the cavity and defines a second plane in conjunction with the leveling edge intersecting the first plane. The interior measuring ledge defines a second volume within the first volume configured for filling with the substances to the interior measuring ledge.
    Type: Application
    Filed: March 22, 2024
    Publication date: October 17, 2024
    Inventor: Jonathan Edgar Roth
  • Publication number: 20240077674
    Abstract: A polarization rotator includes a bus waveguide disposed on a first layer having a longitudinal axis, a first end, and a second end, and a first upper waveguide and a second upper waveguide disposed on a second layer, above the first layer, the first upper waveguide and the second upper waveguide widening as the first upper waveguide and the second upper waveguide extend from the first end to the second end. The first upper waveguide and the second upper waveguide may also symmetrically bend toward each other and then away from each other proximate the second end.
    Type: Application
    Filed: September 2, 2022
    Publication date: March 7, 2024
    Inventors: Jean-Luc J. Tambasco, Jonathan Edgar Roth
  • Publication number: 20240077675
    Abstract: A polarization splitter rotator includes a first lower waveguide and a second lower waveguide disposed on a first layer, the first lower waveguide and the second lower waveguide, in a first portion of the device, widening symmetrically as the first lower waveguide and the second lower waveguide extend from an input end of the device to an output end of the device, and, in a second portion of the device, at least the second lower waveguide widening further, asymmetrically, from the first lower waveguide, and a bus waveguide disposed on a second layer, above the first layer, at least partially overlapping portions of the first lower waveguide and the second lower waveguide.
    Type: Application
    Filed: September 2, 2022
    Publication date: March 7, 2024
    Inventor: Jonathan Edgar Roth
  • Patent number: 11914264
    Abstract: Photonic ring modulators with high tuning efficiency and small footprint can be formed in a hybrid material platform from a silicon bus waveguide vertically coupled to an optically active compound semiconductor (e.g., III-V) ring resonator. The performance of the modulator, e.g., in terms of the tuning efficiency and the maximum insertion loss, may be optimized by suitable levels of an applied bias voltage and a heater power of a heater optionally included in the ring modulator. The disclosed hybrid photonic ring modulators may be used, e.g., in photonic transceiver circuits with high lane count.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: February 27, 2024
    Assignee: OpenLight Photonics, Inc.
    Inventors: John Parker, Jonathan Edgar Roth, Gregory Alan Fish
  • Publication number: 20230390736
    Abstract: A process is described for the removal of carbon dioxide from a gas mixture containing hydrogen by contacting the gas mixture with a shaped sorbent comprising a plurality of layers of photopolymerized resin containing particles of a molecular sieve carbon dioxide sorbent material.
    Type: Application
    Filed: December 3, 2021
    Publication date: December 7, 2023
    Inventors: Alan BOOTLAND, David DAVIS, Jonathan EDGAR, Jonathon HIGGINS
  • Patent number: 11698544
    Abstract: A device, such as an electroabsorption modulator, can modulate a light intensity by controllably absorbing a selectable fraction of the light. The device can include a substrate. A waveguide positioned on the substrate can guide light. An active region positioned on the waveguide can receive guided light from the waveguide, absorb a fraction of the received light, and return a complementary fraction of the received light to the waveguide. Such absorption produces heat, mostly at an input portion of the active region. The input portion of the active region can be thermally coupled to the substrate, which can dissipate heat from the input portion, and can help avoid thermal runaway of the device. The active region can be thermally isolated from the substrate away from the input portion, which can maintain a relatively low thermal mass for the active region, and can increase efficiency when heating the active region.
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: July 11, 2023
    Assignee: OpenLight Photonics, Inc.
    Inventors: Jonathan Edgar Roth, Erik Norberg
  • Patent number: 11698486
    Abstract: Described are various configurations of optical structures having asymmetric-width waveguides. A photodetector can include parallel waveguides that have different widths, which can be connected via passive waveguide. One or more light absorbing regions can be proximate to the waveguides to absorb light propagating through one or more of the parallel waveguides. Multiple photodetectors having asymmetric width waveguides can operate to transduce light in different modes in a polarization diversity optical receiver.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: July 11, 2023
    Assignee: OpenLight Photonics, Inc.
    Inventors: Jonathan Edgar Roth, Jared Bauters, Erik Johan Norberg
  • Patent number: 11678091
    Abstract: Described are various configurations of reduced crosstalk optical switches. Various embodiments can reduce or entirely eliminate crosstalk using a coupler that has a power-splitting ratio that compensates for amplitude imbalance caused by phase modulator attenuation. Some embodiments implement a plurality of phase modulators and couplers as part of a dilated switch network to increase overall bandwidth and further reduce potential for crosstalk.
    Type: Grant
    Filed: May 3, 2022
    Date of Patent: June 13, 2023
    Assignee: OpenLight Photonics, Inc.
    Inventor: Jonathan Edgar Roth
  • Publication number: 20230175097
    Abstract: A method for separating at least two metals from each other in a metal refining process, the method comprising: injecting a feed solution comprising the metals into a column or flow pipe comprising a monolithic solid body having a plurality of channels; and flowing the feed solution through the plurality of channels in the monolithic solid body to separate the metals.
    Type: Application
    Filed: April 28, 2021
    Publication date: June 8, 2023
    Inventors: Jonathan EDGAR, Daniel MARIN FLORIDO, David FOXWELL, Paul Noel O'SHAUGHNESSY, Andreas TSOLIGKAS
  • Patent number: 11668884
    Abstract: An optical coupling device can couple incident light from a fiber into waveguides, but can reduce the coupling of return light from the waveguides into the fiber. A Faraday rotator layer can rotate by forty-five degrees, with a first handedness, respective planes of polarization of incident beams, and can rotate by forty-five degrees, with a second handedness opposite the first handedness, respective planes of polarization of return beams. A redirection layer can include at least one grating coupler that can redirect an incident beam of one polarization so that the redirected path extends within the redirection layer toward a first waveguide, and can redirect an incident beam of an opposite polarization so that the redirected path extends within the redirection layer toward a second waveguide. An optional birefringent layer can spatially separate incident beam having different polarizations, so that two single-polarization grating couplers can be used.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: June 6, 2023
    Assignee: OpenLight Photonics, Inc.
    Inventors: Jonathan Edgar Roth, Jared Bauters, Gregory Alan Fish
  • Patent number: 11624942
    Abstract: Described herein are methods, systems, and apparatuses to utilize an electro-optic modulator including one or more heating elements. The modulator can utilize one or more heating elements to control an absorption or phase shift of the modulated optical signal. At least the active region of the modulator and the one or more heating elements of the modulator are included in a thermal isolation region comprising a low thermal conductivity to thermally isolate the active region and the one or more heating elements from a substrate of the PIC.
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: April 11, 2023
    Assignee: OpenLight Photonics, Inc.
    Inventors: Robert Silvio Guzzon, Erik Norberg, Jonathan Edgar Roth
  • Patent number: 11585978
    Abstract: The wavelength response of an arrayed waveguide grating can be tuned, in accordance with various embodiments, using a beam sweeper including one or more heaters to shift a lateral position of light focused by the beam sweeper at an interface of the beam sweeper with an input free propagation region of the arrayed waveguide grating.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: February 21, 2023
    Assignee: OpenLight Photonics, Inc.
    Inventors: Jared Bauters, Brian R. Koch, Jonathan Edgar Roth, Gregory Alan Fish
  • Patent number: 11573123
    Abstract: Described herein are optical sensing devices for photonic integrated circuits (PICs). A PIC may comprise a plurality of waveguides formed in a silicon on insulator (SOI) substrate, and a plurality of heterogeneous lasers, each laser formed from a silicon material of the SOI substrate and to emit an output wavelength comprising an infrared wavelength. Each of these lasers may comprise a resonant cavity included in one of the plurality of waveguides, and a gain material comprising a non-silicon material and adiabatically coupled to the respective waveguide. A light directing element may direct outputs of the plurality of heterogeneous lasers from the PIC towards an object, and one or more detectors may detect light from the plurality of heterogeneous lasers reflected from or transmitted through the object.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: February 7, 2023
    Assignee: OpenLight Photonics, Inc.
    Inventors: Gregory Alan Fish, Jonathan Edgar Roth, Brandon Buckley
  • Publication number: 20220350180
    Abstract: A device, such as an electroabsorption modulator, can modulate a light intensity by controllably absorbing a selectable fraction of the light. The device can include a substrate. A waveguide positioned on the substrate can guide light. An active region positioned on the waveguide can receive guided light from the waveguide, absorb a fraction of the received light, and return a complementary fraction of the received light to the waveguide. Such absorption produces heat, mostly at an input portion of the active region. The input portion of the active region can be thermally coupled to the substrate, which can dissipate heat from the input portion, and can help avoid thermal runaway of the device. The active region can be thermally isolated from the substrate away from the input portion, which can maintain a relatively low thermal mass for the active region, and can increase efficiency when heating the active region.
    Type: Application
    Filed: July 14, 2022
    Publication date: November 3, 2022
    Inventors: Jonathan Edgar Roth, Erik Norberg
  • Patent number: 11476636
    Abstract: Described are various configurations of integrated wavelength lockers including asymmetric Mach-Zehnder interferometers (AMZIs) and associated detectors. Various embodiments provide improved wavelength-locking accuracy by using an active tuning element in the AMZI to achieve an operational position with high locking sensitivity, a coherent receiver to reduce the frequency-dependence of the locking sensitivity, and/or a temperature sensor and/or strain gauge to computationally correct for the effect of temperature or strain changes.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: October 18, 2022
    Assignee: OpenLight Photonics, Inc.
    Inventors: John Parker, Jared Bauters, Jonathan Edgar Roth, Erik Norberg, Gregory Alan Fish
  • Publication number: 20220326437
    Abstract: Described are various configurations of optical structures having asymmetric-width waveguides. A photodetector can include parallel waveguides that have different widths, which can be connected via passive waveguide. One or more light absorbing regions can be proximate to the waveguides to absorb light propagating through one or more of the parallel waveguides. Multiple photodetectors having asymmetric width waveguides can operate to transduce light in different modes in a polarization diversity optical receiver.
    Type: Application
    Filed: June 29, 2022
    Publication date: October 13, 2022
    Inventors: Jonathan Edgar Roth, Jared Bauters, Erik Johan Norberg
  • Publication number: 20220264200
    Abstract: Described are various configurations of reduced crosstalk optical switches. Various embodiments can reduce or entirely eliminate crosstalk using a coupler that has a power-splitting ratio that compensates for amplitude imbalance caused by phase modulator attenuation. Some embodiments implement a plurality of phase modulators and couplers as part of a dilated switch network to increase overall bandwidth and further reduce potential for crosstalk.
    Type: Application
    Filed: May 3, 2022
    Publication date: August 18, 2022
    Inventor: Jonathan Edgar Roth