Patents by Inventor Varghese Mathai

Varghese 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).

  • Publication number: 20140376580
    Abstract: Apparatuses and methods for high density laser optics are provided. An example, of a laser optics apparatus includes a plurality of vertical cavity surface emitting lasers (VCSELs) in a monolithically integrated array, a high contrast grating (HCG) integrated with an aperture of a vertical cavity of each of the plurality of the VCSELs to enable emission of a single lasing wavelength of a plurality of lasing wavelengths, and a plurality of single mode waveguides, each integrated with a grating coupler, that are connected to each of the plurality of the integrated VCSELs and the HCGs, where each of the grating couplers is aligned to an integrated VCSEL and HCG.
    Type: Application
    Filed: January 18, 2012
    Publication date: December 25, 2014
    Inventors: Michael Renne Ty Tan, David A. Fattal, Wayne V. Sorin, Sagi Varghese Mathai
  • Publication number: 20140370724
    Abstract: An apparatus includes a flexible circuit cable to transport an electrical signal. The apparatus includes a mechanically floating contact integrated into the flexible circuit cable to facilitate connection of the electrical signal between a circuit and the flexible circuit cable.
    Type: Application
    Filed: April 18, 2012
    Publication date: December 18, 2014
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Paul Kessler Rosenberg, Michael Renne Ty Tan, Sagi Varghese Mathai
  • Publication number: 20140341516
    Abstract: A glass-silicon wafer stacked platform.
    Type: Application
    Filed: January 27, 2012
    Publication date: November 20, 2014
    Inventors: Sagi Varghese Mathai, Michael Renne Ty Tan, Wayne Victor Sorin, Paul Kessler Rosenberg, Georgios Panotopoulos, Susant K Patra
  • Publication number: 20140334773
    Abstract: An apparatus for use in optoelectronics includes a first alignment element and a first wafer comprising a through optical via. The first alignment element is bonded to the first wafer, such that the through optical via is uncovered by the first alignment element. In addition, the first wafer further comprises a plurality of bond pads upon which an optoelectronic component having an optical element is to be attached, in which the first alignment element is to mate with a mating alignment element on an optical transmission medium, and wherein the optical transmission medium is to be passively aligned with the optical element through the through optical via when the first alignment element is mated with the mating alignment element on the optical transmission medium.
    Type: Application
    Filed: January 31, 2012
    Publication date: November 13, 2014
    Inventors: Sagi Varghese Mathai, Michael Renne Ty Tan, Paul Kessier Rosenberg, Wayne Victor Sorin
  • Publication number: 20140328596
    Abstract: A combination underfill-dam and electrical-interconnect structure for an opto-electronic engine. The structure includes a first plurality of electrical-interconnect solder bodies. The first plurality of electrical-interconnect solder bodies includes a plurality of electrical interconnects. The first plurality of electrical-interconnect solder bodies, is disposed to inhibit intrusion of underfill material into an optical pathway of an opto-electronic component for the opto-electronic engine. A system and an opto-electronic engine that include the combination underfill-dam and electrical interconnect structure are also provided.
    Type: Application
    Filed: January 31, 2012
    Publication date: November 6, 2014
    Inventors: Sagi Varghese Mathai, Michael Renne Ty Tan, Paul Kessler Rosenberg, Wayne Victor Sorin, Georgios Panotopoulos, Susant K. Patra, Joseph Straznicky
  • Patent number: 8873893
    Abstract: A nano-wire optical block device for amplifying, modulating, and detecting an optical signal in a large-core hollow metallized waveguide. The nano-wire optical block device comprises a substrate with a plurality of nano-wires coupled to the substrate to form the nano-wire optical block. Each properly formed nano-wire is comprised of a p-doped region, an intrinsic region, and an n-doped region. The nano-wire optical block is operable to be inserted into the large-core hollow metallized waveguide to provide at least one of amplifying, modulating, and detecting the optical signal.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: October 28, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sagi Varghese Mathai, Shih-Yuan Wang
  • Patent number: 8842363
    Abstract: An apparatus for dynamically varying an optical characteristic of a light beam includes an optical element configured to receive a beam of light. The optical element includes at least one sub-wavelength grating formed of a plurality of lines. The apparatus includes at least one actuator connected to at least one component of the optical element and a controller for controlling the at least one actuator to dynamically vary a characteristic of the beam of light that is at least one of emitted through and reflected from the optical element.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: September 23, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sagi Varghese Mathai, Jingjing Li, Alexandre M. Bratkovski
  • Patent number: 8822275
    Abstract: A composite wafer includes a molded wafer and a second wafer. The molded wafer includes a plurality of first components, and the second wafer includes a plurality of second components. The second wafer is combined with the molded wafer to form the composite wafer. At least one of the first components is aligned with at least one of the second components to form a multi-component element. The multi-component element is singulatable from the composite wafer.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: September 2, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Michael Renne Ty Tan, Georgios Panotopoulos, Paul Kessler Rosenberg, Sagi Varghese Mathai, Wayne Victor Sorin, Susant K Patra
  • Publication number: 20140226934
    Abstract: An optical power splitter includes a zig-zag and a reflector element associated with the zig-zag. The zig-zag is to split an input signal based on the reflector element, and output a plurality of split signals.
    Type: Application
    Filed: September 30, 2011
    Publication date: August 14, 2014
    Inventors: Georgios Panotopoulos, Michael Renne Ty Tan, Paul Kessier Rosenberg, Sagi Varghese Mathai, Wayne V. Sorin, Aaron S. Patra
  • Publication number: 20140219608
    Abstract: Waveguide array optical power splitters that provide compact, low-cost implementation of optical power splitting for one and two dimensional optical waveguide arrays are disclosed. The optical power splitters do not introduce mode dependent loss and preserve polarization, enabling the optical power splitters to be used with multimode and single mode light sources. In one aspect, an optical power splitter includes a beamsplitter to receive a plurality of incident beams of light. The beamsplitter splits each incident beam of light into a plurality of output beams of light with each output beam output in a different direction from the beamsplitter. The optical power splitter includes a first set of lenses with each lens to approximately collimate one of the incident beams of light, and includes a second set of lenses with each lens to focus the output beams of light.
    Type: Application
    Filed: July 29, 2011
    Publication date: August 7, 2014
    Inventors: Wayne V Sorin, Michael Renne Ty Tan, Sagi Varghese Mathai, Paul Kessler Rosenberg, Georgios Panotopoulos
  • Publication number: 20140205237
    Abstract: A mechanically aligned optical engine includes an optoelectronic component connected to a first side of a bench substrate and a transparent substrate bonded to a second side of the bench substrate. The transparent substrate comprises a mechanical feature designed to fit within an aperture of the bench substrate such that a lens formed onto the transparent substrate is aligned with an active region of the optoelectronic component.
    Type: Application
    Filed: September 6, 2011
    Publication date: July 24, 2014
    Inventors: Sagi Varghese Mathai, Michael Renne Ty Tan, Paul Kessler Rosenberg, Wayne V. Sorin, Georgios Panotopoulos, Susant K. Patra
  • Patent number: 8737845
    Abstract: An optical engine for providing a point-to-point optical communications link between a first computing device and a second computing device. The optical engine includes a modulated hybrid micro-ring laser formed on a substrate and configured to generate an optical signal traveling parallel to the plane of the substrate. The optical engine further includes a waveguide, also formed in a plane parallel to the plane of the substrate, that is configured to guide the optical signal from the modulated ring laser to a defined region, a waveguide coupler at the defined region configured for coupling the optical signal into a multi-core optical fiber, and a multi-core optical fiber at the defined region that is configured to receive and transport the optical signal to the second computing device.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: May 27, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Marco Fiorentino, Qianfan Xu, Sagi Varghese Mathai, Raymond G. Beausoleil
  • Patent number: 8718422
    Abstract: An angled coupling for optical fibers can comprise a body (10) having an incoming aperture (18a) and an outgoing aperture (18b), from which an incoming hollow waveguide (12a) and an outgoing hollow waveguide (12b) extend into the body at an angle (22). A reflective surface (24) is situated at the vertex of the angle and is oriented substantially perpendicular to a bisector of the angle. The coupling also comprises an incoming coupling structure (32a) and an outgoing coupling structure (32b), each configured to attach an optical fiber to the corresponding aperture.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: May 6, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Paul Kessler Rosenberg, Michael Renne Ty Tan, Eric Peterson, Huei Pei Kuo, Sagi Varghese Mathai
  • Patent number: 8693814
    Abstract: A flexible optical interconnect and method of forming the interconnect is disclosed. The optical interconnect includes a waveguide base formed from a flexible dielectric material. A three-sided channel is formed in the flexible material. Each side of the channel is coated with a reflective metallic coating. A cover piece is formed from the flexible material and coated with a reflective metallic coating on an underside. The cover piece is coupled to the waveguide base to form a flexible optical bus having at least one hollow metallized waveguide. The hollow metallized waveguide is configured to carry an optical signal. A transverse slot is formed in the cover piece and the waveguide base to form an aperture bisecting the hollow metallized waveguide to enable the optical signal to be detected and/or redirected.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: April 8, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Paul Kessler Rosenberg, Michael Renne Ty Tan, Sagi Varghese Mathai
  • Publication number: 20140037247
    Abstract: According to an example, an apparatus for use in optoelectronics includes a bottom transparent layer, a top transparent layer having a top surface, a lens sandwiched between the bottom transparent layer and the top transparent layer, and a first alignment element attached to the top surface of the top transparent layer, wherein the first alignment element is offset with respect to the lens and is to mate with a mating alignment element on an optical transmission medium.
    Type: Application
    Filed: July 31, 2012
    Publication date: February 6, 2014
    Inventors: Sagi Varghese MATHAI, Michael Renne Ty TAN, Paul Kessler ROSENBERG, Wayne Victor SORIN
  • Publication number: 20140029943
    Abstract: A system includes a laser array that receives a plurality of electrical signals and generates a plurality of optical signals driven from a corresponding member of the plurality of electrical signals, wherein the plurality of optical signals are arranged in a plurality of different groups. A coplanar router routes the plurality of optical signals to an array of optical multiplexers, such that each multiplexer receives optical signals from each of the plurality of different groups.
    Type: Application
    Filed: July 30, 2012
    Publication date: January 30, 2014
    Inventors: Sagi Varghese Mathai, Michael Renne Ty Tan, Wayne Victor Sorin
  • Patent number: 8576890
    Abstract: A VCSEL includes a grating layer configured with a non-periodic, sub-wavelength grating, in which the non-periodic, sub-wavelength grating includes at least one first section configured to have a relatively low reflection coefficient and at least one second section configured to have a relatively high reflection coefficient to cause light to be reflected in a predetermined, non-Gaussian, spatial mode across the sub-wavelength grating. The VCSEL also includes a reflective layer and a light emitting layer disposed between the grating layer and the reflector, in which the sub-wavelength grating and the reflector form a resonant cavity.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: November 5, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David A. Fattal, Raymond G. Beausoleil, Sagi Varghese Mathai
  • Publication number: 20130286614
    Abstract: A composite wafer includes a molded wafer and a second wafer. The molded wafer includes a plurality of first components, and the second wafer includes a plurality of second components. The second wafer is combined with the molded wafer to form the composite wafer. At least one of the first components is aligned with at least one of the second components to form a multi-component element. The multi-component element is singulatable from the composite wafer.
    Type: Application
    Filed: April 30, 2012
    Publication date: October 31, 2013
    Inventors: Michael Renne Ty Tan, Georgios Panotopoulos, Paul Kessler Rosenberg, Sagi Varghese Mathai, Wayne Victor Sorin, Susant K. Patra
  • Publication number: 20130287336
    Abstract: An apparatus comprises a given multimode optical waveguide extending in a given direction. The apparatus also comprises another multimode optical waveguide extending in another direction and intersecting with the given multimode waveguide. The apparatus further comprises a bi-stable optical switch positioned at the intersection of the given multimode optical waveguide and the another multimode optical waveguide to redirect a multimode optical signal transmitted on the given multimode optical waveguide to the another optical waveguide in a redirection state and pass the multimode optical signal transmitted on the given multimode optical waveguide across the intersection of the given multimode optical waveguide and the another optical waveguide in a pass-through state. The bi-stable optical switch can comprise a gap extending diagonally from a given corner of the intersection of the given and the another optical multimode waveguides to an opposing corner of the intersection.
    Type: Application
    Filed: April 26, 2012
    Publication date: October 31, 2013
    Inventors: Shih-Yuan Wang, Michael Renne Ty Tan, Wayne Victor Sorin, Michael Schlansker, Sagi Varghese Mathai
  • Patent number: 8570762
    Abstract: Various embodiments of the present invention are directed to computer buses that can be used to distribute data between components of various computer systems. In one aspect, a computer bus includes multiple opto-electronic engines disposed within a housing and multiple flexible connectors. Each flexible connector extends through an opening in the housing and is coupled at a first end to an opto-electronic engine and at a second to an electronic device. The flexible connectors enable the bus to be placed in different orientations and positions in order to optimize space and connectivity requirements or limitations.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: October 29, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Paul Kessler Rosenberg, Michael Renne Ty Tan, Sagi Varghese Mathai