Patents by Inventor Sajan Saini

Sajan Saini 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 structure of germanium laser on silicon
    Patent number: 7596158
    Abstract: A laser structure includes at least one active layer having doped Ge so as to produce light emissions at approximately 1550 nm from the direct band gap of Ge. A first confinement structure is positioned on a top region of the at least one active layer. A second confinement structure is positioned on a bottom region the at least one active layer.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: September 29, 2009
    Assignee: Massachusetts Institute of Technology
    Inventors: Jifeng Liu, Dong Pan, Lionel C. Kimerling, Jurgen Michel, Sajan Saini
  • Partial confinement photonic crystal waveguides
    Patent number: 7480430
    Abstract: An optical waveguide structure includes an air-via region that receives an optical signal from an optical source. A photonic crystal cladding region is formed on the surface of the air-via region. The photonic crystal cladding region confines the optical signal within the air-via region and propagates the optical signal along the axial direction while ensuring near complete transmission of the optical signal.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: January 20, 2009
    Assignee: Massachusetts Institute of Technology
    Inventors: Sajan Saini, Jurgen Michel, Dong Pan, Wojciech Giziewicz, Lionel C. Kimerling
  • Planar multiwavelength optical power supply on a silicon platform
    Patent number: 7336684
    Abstract: A microphotonic light source includes an optical pump and a plurality of waveguides that distribute optical pump power of the optical pump. At least one Erbium-doped laser ring is coupled to at least one of the waveguides so as to match the resonance condition of the optical pump.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: February 26, 2008
    Assignee: Massachusetts Institute of Technology
    Inventors: Daniel K. Sparacin, Luca Dal Negro, Sajan Saini, Lionel C. Kimerling
  • Partial confinement photonic crystal waveguides
    Publication number: 20070181915
    Abstract: An optical waveguide structure includes an air-via region that receives an optical signal from an optical source. A photonic crystal cladding region is formed on the surface of the air-via region. The photonic crystal cladding region confines the optical signal within the air-via region and propagates the optical signal along the axial direction while ensuring near complete transmission of the optical signal.
    Type: Application
    Filed: February 8, 2006
    Publication date: August 9, 2007
    Inventors: Sajan Saini, Jurgen Michel, Dong Pan, Wojciech Giziewicz, Lionel Kimerling
  • METHOD AND STRUCTURE OF GERMANIUM LASER ON SILICON
    Publication number: 20070105251
    Abstract: A laser structure includes at least one active layer having doped Ge so as to produce light emissions at approximately 1550 nm from the direct band gap of Ge. A first confinement structure is positioned on a top region of the at least one active layer. A second confinement structure is positioned on a bottom region the at least one active layer.
    Type: Application
    Filed: October 26, 2006
    Publication date: May 10, 2007
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Jifeng Liu, Dong Pan, Lionel Kimerling, Jurgen Michel, Sajan Saini
  • Planar multiwavelength optical power supply on a silicon platform
    Publication number: 20050063426
    Abstract: A microphotonic light source includes an optical pump and a plurality of waveguides that distribute optical pump power of the optical pump. At least one Erbium-doped laser ring is coupled to at least one of the waveguides so as to match the resonance condition of the optical pump.
    Type: Application
    Filed: July 29, 2004
    Publication date: March 24, 2005
    Inventors: Daniel Sparacin, Luca Negro, Sajan Saini, Lionel Kimerling