Patents by Inventor Vilhelm Oskarsson

Vilhelm Oskarsson 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).

  • Top contact VCSEL with monitor
    Patent number: 6678292
    Abstract: A vertical cavity surface emitting laser (VCSEL) and monitoring diode combination having reduced parasitic capacitance for use in high bandwidth communications systems. The VCSEL has both p-type and n-type contacts on the same face. This allows the VCSEL to be mounted on a monitor chip or diode without using a metal contact layer. In an embodiment wherein the VCSEL is soldered to the monitor chip for mechanical stability only a small metal pad no larger than the VCSEL is used. The reduction in metallisation results in a lower parasitic capacitance that in turn results in higher potential operational speeds.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: January 13, 2004
    Assignee: Zarlink Semiconductor AB
    Inventors: Mikael Wickström, Jan Jönsson, Vilhelm Oskarsson
  • Top contact VCSEL with monitor
    Publication number: 20020110171
    Abstract: A vertical cavity surface emitting laser (VCSEL) and monitoring diode combination having reduced parasitic capacitance for use in high bandwidth communications systems. The VCSEL has both p-type and n-type contacts on the same face. This allows the VCSEL to be mounted on a monitor chip or diode without using a metal contact layer. In an embodiment wherein the VCSEL is soldered to the monitor chip for mechanical stability only a small metal pad no larger than the VCSEL is used.
    Type: Application
    Filed: February 8, 2002
    Publication date: August 15, 2002
    Applicant: Mitel Semiconductor AB
    Inventors: Mikael Wickstrom, Jan Jonsson, Vilhelm Oskarsson
  • Alignment of optical assemblies
    Publication number: 20020094175
    Abstract: A method and system for use in accurately aligning components in a multi element electro-optic assembly. One or more guiding pins are provided in association with one layer of the assembly. Each remaining layer is provided with cooperating guiding means which mate with the guide pins in a manner whereby the various optical components are accurately aligned upon completion of the fabrication process. The system and method reduces the assembly time required by the typical time consuming active alignment technique.
    Type: Application
    Filed: December 20, 2001
    Publication date: July 18, 2002
    Applicant: Zarlink Semiconductor AB
    Inventor: Vilhelm Oskarsson
  • Top contact VCSEL with monitor
    Patent number: 6368890
    Abstract: A vertical cavity surface emitting laser (VCSEL) and monitoring diode combination having reduced parasitic capacitance for use in high bandwidth communications systems. The VCSEL has both p-type and n-type contacts on the same face. This allows the VCSEL to be mounted on a monitor chip or diode without using a metal contact layer. In an embodiment wherein the VCSEL is soldered to the monitor chip for mechanical stability only a small metal pad no larger than the VCSEL is used.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: April 9, 2002
    Assignee: Mitel Semiconductor AB
    Inventors: Mikael Wickström, Jan Jönsson, Vilhelm Oskarsson
  • High powered laser diode
    Patent number: 6163556
    Abstract: A method of reducing the amount of unwanted radiation emitted from a semiconductor laser device involves coating a transparent portion the device intended to transmit radiation with a partially reflective layer.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: December 19, 2000
    Assignee: Mitel Semiconductor AB
    Inventor: Vilhelm Oskarsson