Patents by Inventor Sagi Mathai

Sagi Mathai 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: 10895688
    Abstract: In example implementations, an optical connector is provided. The optical connector includes a jumper holder, a base bracket, and an optical ferrule. The jumper holder holds a plurality of ribbon fibers. The base bracket is coupled to an electrical substrate to mate with the jumper holder. The optical ferrule is coupled to an end of each one of the plurality of ribbon fibers. The optical ferrule is laterally inserted into a corresponding orthogonal socket that is coupled to a silicon interposer on the electrical substrate to optically mate the optical ferrule to the orthogonal socket.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: January 19, 2021
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Kevin B. Leigh, Paul Kessler Rosenberg, Sagi Mathai, Mir Ashkan Seyedi, Michael Renne Ty Tan, Wayne Victor Sorin, Marco Fiorentino
  • Patent number: 10868407
    Abstract: An array of monolithic wavelength division multiplexing (WDM) vertical cavity surface emitting lasers (VCSELs) with spatially varying gain peak and Fabry Perot wavelength is provided. Each VCSEL includes a lower distributed Bragg reflector (DBR), a Fabry Perot tuning/current spreading layer, and a structure comprising a multiple quantum well (MQW) layer sandwiched between a lower separate confinement heterostructure (SCH) layer and an upper SCH layer. The structure is sandwiched between the DBR and the Fabry Perot tuning/current spreading layer. Each MQW experiences a different amount of quantum well intermixing and concomitantly a different wavelength shift. Each VCSEL further includes a top mirror on the Fabry Perot tuning/current spreading layer. A method is also provided for manufacturing the array.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: December 15, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Sagi Mathai, Michael Renne Ty Tan
  • Patent number: 10816738
    Abstract: One example includes an optical coupler. The optical coupler includes a waveguide formed in a first layer of a layered structure that is to propagate an optical signal. The waveguide includes an end portion. The optical coupler also includes a turning mirror that includes a bulk structure and a reflective material deposited on an angular face of the bulk structure to form a surface of the turning mirror. The bulk structure can have a greater cross-sectional size than a cross-sectional size of the waveguide, such that the angular face extends above the first layer of the layered structure and extends into a second layer of the layered structure below the first layer. The surface of the turning mirror can be arranged to reflect the optical signal that is provided from the end portion of the waveguide.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: October 27, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Sagi Mathai, Michael Renne Ty Tan
  • Patent number: 10795103
    Abstract: Optoelectronic devices with a support member and methods of manufacturing or assembling the same are provided. An example of an optoelectronic device according to the present disclosure includes a substrate and an optical component and an electronic component disposed thereon or therein. The optoelectronic device further includes a ferrule coupled to the optical fiber and an optical socket receiving the ferrule therein. The optoelectronic device includes a support member disposed between the substrate and the optical socket such that the optical socket is spaced from the substrate by the support member.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: October 6, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Paul Kessler Rosenberg, Sagi Mathai, Michael Renne Ty Tan
  • Patent number: 10795091
    Abstract: An example adaptor for passively aligning an optical component of an optical connector with a ferrule of the optical connector. The adaptor may include first alignment feature and second alignment features. The first alignment features may be to, when the adaptor is connected to the ferrule, cooperate with alignment features of the ferrule to passively force the adaptor into a first configuration relative to the ferrule. The second alignment features may be arranged such that, when the optical component is held in contact with the second alignment features and the adaptor is in the first configuration relative to the ferrule, the optical component is in an aligned position relative to the ferrule.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: October 6, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Paul Kessler Rosenberg, Sagi Mathai, Michael Tan
  • Patent number: 10788633
    Abstract: In example implementations, an apparatus is provided. The apparatus includes an optical transmission component and an optical reception component. The optical transmission component includes a plurality of lasers and a transmit filter. The plurality of lasers each emit a different wavelength of light. The transmit filter includes a plurality of different regions that correspond to one of the different wavelengths of light emitted by the plurality of lasers. The optical reception component includes a plurality of photodiodes and a complementary reverse order (CRO) filter. The CRO filter includes a same plurality of different regions as the transmit filter in a reverse order.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: September 29, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Kevin B. Leigh, Paul Kessler Rosenberg, Sagi Mathai, Wayne Victor Sorin, Michael Renne Ty Tan, Georgios Panotopoulos
  • Patent number: 10756839
    Abstract: A hybrid optical transceiver is provided. An optical component disposed on a substrate, the optical component comprising a transmitter section and a receiver section. Transmitter section comprises a plurality of vertical cavity surface emitting laser (VCSEL) arrays communicatively coupled to a plurality of multiplexers, configured to launch multiplexed optical signals into the lowest order mode group of a multimode fiber or the lowest order mode of a single mode fiber. Receiver section comprises a photodetector array comprising a plurality of optical detectors, and configured to receive demultiplexed optical signals of unknown polarization without routing waveguides. In various embodiments, each section being independently removable from a substrate.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: August 25, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Stanley Cheung, Michael Tan, Sagi Mathai, Wayne Victor Sorin, Paul Rosenberg
  • Patent number: 10725252
    Abstract: Systems and apparatuses are disclosed for flexible, mating force-managed optical connections using a plurality of optical connectors and ferrule carrier adapters. Each of the plurality of ferrule carriers comprise a plurality of duplex ferrules disposed within ferrule bays of the ferrule carrier. A bracket of the optical connector gangs the plurality of ferrule carriers together. Ferrule carrier adapters are configured to accept a plurality of optical connectors for inline or orthogonal mating. Each ferrule carrier within the optical connectors is independently floated on the bracket, allowing each ferrule carrier to be mated and demated independently of any other ferrule carrier in the optical connector.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: July 28, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Kevin B. Leigh, John Norton, Sagi Mathai, Ashkan Seyedi
  • Patent number: 10698163
    Abstract: Examples herein relate to polarization diversity optical interface assemblies including a single mode optical fiber and first and second grating couplers disposed on a substrate. The first and second grating couplers are coupled to first and second waveguides, respectively. The assemblies further includes an optical connector to couple light between the single mode optical fiber and each of the first and second grating couplers. The optical connector includes a ferrule and a walk-off crystal. The ferrule is coupled to a portion of the single mode optical fiber. The walk-off crystal is configured to spatially separate the light into first and second orthogonal polarization modes prior to passing through the respective first and second grating couplers and/or combine the first and second polarization modes of the light prior to passing through the single mode optical fiber.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: June 30, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Sagi Mathai, Wayne Victor Sorin, Marco Fiorentino, Michael Renne Ty Tan
  • Publication number: 20200203918
    Abstract: Examples of the present disclosure include a tunable laser comprising a waveguide including gain section. The waveguide overlies and is optically coupled to another waveguide. The another waveguide has a reflector at one end. A laser cavity is formed in the waveguides.
    Type: Application
    Filed: September 30, 2019
    Publication date: June 25, 2020
    Inventors: Stanley Cheung, Michael Renne Ty Tan, Wayne Sorin, Joaquin Matres Abril, Sagi Mathai
  • Patent number: 10677990
    Abstract: In the examples provided herein, a system includes a loop waveguide; and a grating coupler formed on the loop waveguide to couple light impinging on the grating coupler having a first polarization into the loop waveguide in a first direction, and to couple light having a second polarization, orthogonal to the first polarization, into the loop waveguide in a second direction. The system also includes a ring resonator positioned near the loop waveguide tuned to have a resonant wavelength at a first wavelength to couple light at the first wavelength out of the loop waveguide into the ring resonator. An output waveguide positioned near the ring resonator couples light out of the ring resonator into the output waveguide; and a photodetector detects light propagating out of a first end and a second end of the output waveguide.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: June 9, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Joaquin Matres, Wayne Victor Sorin, Sagi Mathai, Lars Helge Thylen, Michael Renne Ty Tan, Marco Fiorentino
  • Publication number: 20200132953
    Abstract: Optoelectronic devices with a support member and methods of manufacturing or assembling the same are provided. An example of an optoelectronic device according to the present disclosure includes a substrate and an optical component and an electronic component disposed thereon or therein. The optoelectronic device further includes a ferrule coupled to the optical fiber and an optical socket receiving the ferrule therein. The optoelectronic device includes a support member disposed between the substrate and the optical socket such that the optical socket is spaced from the substrate by the support member.
    Type: Application
    Filed: October 30, 2018
    Publication date: April 30, 2020
    Inventors: Paul Kessler Rosenberg, Sagi Mathai, Michael Renne Ty Tan
  • Publication number: 20200132933
    Abstract: Examples herein relate to polarization diversity optical interface assemblies including a single mode optical fiber and first and second grating couplers disposed on a substrate. The first and second grating couplers are coupled to first and second waveguides, respectively. The assemblies further includes an optical connector to couple light between the single mode optical fiber and each of the first and second grating couplers. The optical connector includes a ferrule and a walk-off crystal. The ferrule is coupled to a portion of the single mode optical fiber. The walk-off crystal is configured to spatially separate the light into first and second orthogonal polarization modes prior to passing through the respective first and second grating couplers and/or combine the first and second polarization modes of the light prior to passing through the single mode optical fiber.
    Type: Application
    Filed: October 30, 2018
    Publication date: April 30, 2020
    Inventors: Sagi Mathai, Wayne Victor Sorin, Marco Fiorentino, Michael Renne Ty Tan
  • Publication number: 20200127442
    Abstract: In example implementations of a vertical-cavity surface-emitting laser (VCSEL), the VCSEL includes a p-type distributed Bragg reflector (p-DBR) layer and a p-type ohmic (p-ohmic) contact layer adjacent to the p-DBR layer. The p-DBR layer may include an oxide aperture and the p-ohmic contact layer may have an opening that is aligned with the oxide aperture. The opening may be filled with a dielectric material. A metal layer may be coupled to the p-ohmic contact layer and encapsulate the dielectric material.
    Type: Application
    Filed: December 18, 2019
    Publication date: April 23, 2020
    Inventors: Sagi MATHAI, Michael Renne Ty TAN, Wayne Victor SORIN
  • Publication number: 20200110225
    Abstract: An optical ferrule includes a substrate formed of a diced wafer and a molded structure formed on the substrate. The molded structure may be formed of a curable material. The molded structure may include a plurality of grooves for positioning a plurality of optical fibers therealong, respectively, a plurality of reflective surfaces formed to reflect optical signals from ends of the plurality of optical fibers, respectively, or reflect incident optical signals towards the ends of the plurality of optical fibers, respectively, and an alignment structure disposed to be aligned to a corresponding alignment structure of a socket to which the optical ferrule is coupled.
    Type: Application
    Filed: December 9, 2019
    Publication date: April 9, 2020
    Inventors: Sagi Mathai, Paul Kessler Rosenberg, Kevin B. Leigh
  • Publication number: 20200105957
    Abstract: A substrate-entry photodiode includes a light redirection layer over an absorbing layer of the photodiode. The light redirection layer may reflect light back through the absorbing layer of the photodiode at an oblique angle. The oblique angle prevents the reflected light from exiting the substrate entry aperture while providing a second pass through the absorbing layer.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 2, 2020
    Inventors: Sagi Mathai, Wayne Victor Sorin, Michael Renne Ty Tan
  • Publication number: 20200088947
    Abstract: In example implementations, an optical connector is provided. The optical connector includes a jumper holder, a base bracket, and an optical ferrule. The jumper holder holds a plurality of ribbon fibers. The base bracket is coupled to an electrical substrate to mate with the jumper holder. The optical ferrule is coupled to an end of each one of the plurality of ribbon fibers. The optical ferrule is laterally inserted into a corresponding orthogonal socket that is coupled to a silicon interposer on the electrical substrate to optically mate the optical ferrule to the orthogonal socket.
    Type: Application
    Filed: November 25, 2019
    Publication date: March 19, 2020
    Inventors: Kevin B. Leigh, Paul Kessler Rosenberg, Sagi Mathai, Mir Ashkan Seyedi, Michael Renne Ty Tan, Wayne Victor Sorin, Marco Fiorentino
  • Publication number: 20200049909
    Abstract: In some examples a silicon photonic (SiPh) solder reflowable assembly may comprise a silicon interposer bonded to an organic substrate, the silicon interposer having an optical grating disposed on the interposer to couple an optical signal, a lens array chip, the lens array comprising one or more lenses on a wafer, the lens array chip flip chip reflowed to the silicon interposer by a bonding agent and the one or more lenses having a predetermined shape that expands, collimates, and tilts a beam of the optical signal exiting the grating. The wafer has a coefficient of thermal expansion (CTE) that matches silicon and the one or more lenses and the grating are aligned in such a way the optical signal enters the grating at a desired angle.
    Type: Application
    Filed: January 30, 2017
    Publication date: February 13, 2020
    Inventors: Sagi Mathai, Michael Rene Ty Tan, Marco Fiorentino, Paul Kessler Rosenberg, David Kielpinski, Wayne Victor Sorin
  • Publication number: 20200044738
    Abstract: Systems and methods are provided for a dual-side bi-directional optical multiplexing system includes a light receiving elements array receiving light from in an egress propagation direction from an optical fiber, arranged at a side of the optical fiber. The system also includes a light transmitting elements array emitting light in an ingress propagation direction into the optical fiber, and arranged at a second position to an opposing side of the optical fiber. The light receiving elements array and the light transmitting elements array are on dual-sides of the system with respect to the optical fiber. The system also includes bi-directional micro-optics interfacing with the optical fiber, and interfacing with the light transmitting elements array to direct light propagating in the ingress direction emitted from the light transmitting element array towards the optical fiber.
    Type: Application
    Filed: August 6, 2018
    Publication date: February 6, 2020
    Inventors: Kevin B. Leigh, Michael Renne Ty Tan, Sagi Mathai, Paul Rosenberg, Wayne Sorin
  • Patent number: 10530124
    Abstract: Examples of the present disclosure include a tunable laser comprising an optical coupler to couple light between a first laser cavity and a second laser cavity. The first laser cavity may extending between the optical coupler and a first reflector and include a first gain section. The second laser cavity may extend between the optical coupler and a second reflector and including a second gain section. At least one of the first laser cavity and the second laser cavity is tunable.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: January 7, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Stanley Cheung, Michael Renne Ty Tan, Wayne V Sorin, Joaquin Matres Abril, Sagi Mathai