Patents by Inventor Mats Granberg

Mats Granberg 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).

  • Method and device for passive alignment
    Patent number: 7317746
    Abstract: The present invention is related to a method and device for precision and passive alignment such as precision and passive alignment technology for low cost array fibre access components. A laser carrier is passively aligned to an MT-interface using alignment structures on a replicated carrier. The laser carrier is based on a self-aligned semiconductor laser, flip-chip mounted on a silicon substrate with planar polymeric waveguides.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: January 8, 2008
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Thomas Ericson, Paul Eriksen, Mats Granberg, Krister Fröjd, Göran Palmskog, Pontus Lundström, Lennart Bäcklin, Christian Vjeider, Paul Asger Eriksen
  • Method and device for passive alignment
    Publication number: 20060007972
    Abstract: The present invention is related to a method and device for precision and passive alignment such as precision and passive alignment technology for low cost array fibre access components. A laser carrier is passive aligned to an MT-interface using alignment structures on a replicated carrier. The laser carrier is based on a self-aligned semiconductor laser, flip-chip mounted on a silicon substrate with planar polymeric waveguides. The concept for the alignment according to the invention is shown in FIG. 1 as a front view of a laser carrier (1) mounted on a polymeric carrier (5).
    Type: Application
    Filed: July 11, 2005
    Publication date: January 12, 2006
    Inventors: Thomas Ericson, Paul Eriksen, Mats Granberg, Krister Frojd, Goran Palmskog, Pontus Lundstrom, Lennart Backlin, Christian Vjeider, Paul Eriksen
  • Method and device for passive alignment
    Publication number: 20020019068
    Abstract: The present invention is related to a method and device for precision and passive alignment such as precision and passive alignment technology for low cost array fibre access components. A laser carrier is passive aligned to an MT-interface using alignment structures on a replicated carrier. The laser carrier is based on a self-aligned semiconductor laser, flip-chip mounted on a silicon substrate with planar polymeric waveguides. The concept for the alignment according to the invention is shown in FIG. 1 as a front view of a laser carrier (1) mounted on a polymeric carrier (5).
    Type: Application
    Filed: May 23, 2001
    Publication date: February 14, 2002
    Inventors: Thomas Ericson, Paul Eriksen, Mats Granberg, Krister Frojd, Goran Palmskog, Pontus Lundstrom, Lennart Backlin, Christian Vjeider
  • Optical element using multimode interference
    Patent number: 6222960
    Abstract: Optical elements utilize multimode interference in a piece of an optical fiber of multimode type having a core in the shape of a ring or a tubular structure. Such a fiber can be compared to a planar waveguide, the core of which has been bent about a longitudinal axis located at some distance from the core. Such an optical fiber can be optically excited having an excitation centre in a point on or at the annular core by coupling from a single-mode fiber. Then different optical propagation modes are excited having approximately regular relations between their phase velocities so that, for example, for a suitable length of the fiber piece a light intensity is obtained in the other end of the fiber piece which is an approximate reflected image of the light intensity supplied at the input end of the fiber piece.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: April 24, 2001
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Leif Stensland, Georges Borak, Torsten Augustsson, Mats Granberg