Patents by Inventor John Farah

John Farah 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: 20080089637
    Abstract: Polyimide substrates, and polymer laminates for optical and electronic applications are described. Single or multi-layer waveguide structures are deposited on the polyimide substrates. Laminates including polymer or a hybrid organic/inorganic waveguiding film can be deposited on a polished polyimide substrate. The laminate can also include piezoelectric and metallic layers. Micromachined optical devices, such as cantilevered waveguide are fabricated by laser ablation using a combination of IR and UV lasers. A fiber-to-waveguide coupler with a laser-machined groove for holding the fiber is also disclosed. Holes are drilled with excimer and YAG laser in the polyimide substrate and metallized to provide continuous electrical contact between both sides of the substrate. Metallized polyimide substrates are bumped and stacked to provide high density interconnects. The polyimide substrate is bonded to a semiconductor wafer.
    Type: Application
    Filed: October 1, 2007
    Publication date: April 17, 2008
    Inventor: John Farah
  • Publication number: 20060152830
    Abstract: This invention concerns the fabrication of deformable mirrors that can be used in adaptive optics applications.
    Type: Application
    Filed: January 12, 2006
    Publication date: July 13, 2006
    Inventor: John Farah
  • Publication number: 20060154156
    Abstract: This invention concerns enhancing the resolution of optical imaging systems.
    Type: Application
    Filed: January 12, 2006
    Publication date: July 13, 2006
    Inventor: John Farah
  • Publication number: 20060056759
    Abstract: Polymer substrates, in particular polyimide substrates, and polymer laminates for optical applications are described. Polyimide substrates are polished to an average surface roughness of about 0.25? inch, and single-layer or multi-layer waveguide structures are deposited on the polished polyimide substrates. Laminates including polymer or a hybrid organic/inorganic waveguiding film can be deposited on a polished polyimide substrate. The laminate can also include piezoelectric and metallic layers. Micromachined optical devices, such as cantilevered waveguide are fabricated by laser ablation using a combination of IR and UV lasers. A fiber-to-waveguide coupler with a laser-machined groove for holding the fiber is also disclosed. Holes are drilled in the polyimide wafer using excimer or tripled YAG laser. The holes are metallized to provide mircovias.
    Type: Application
    Filed: November 2, 2005
    Publication date: March 16, 2006
    Inventor: John Farah
  • Patent number: 6807328
    Abstract: Polymer substrates, in particular polyimide substrates, and polymer laminates for optical applications are described. Polyimide substrates are polished to an average surface roughness of about 0.25 &mgr;inch, and single-layer or multi-layer waveguide structures are deposited on the polished polyimide substrates. Laminates including polymer or a hybrid organic/inorganic waveguiding film can be deposited on a polished polyimide substrate. The laminate can also include ceramic, piezoelectric and metallic layers. Optical waveguide devices are machined by laser ablation using a combination of IR and UV lasers. A waveguide-fiber coupler with a laser-machined groove for holding the fiber is also disclosed.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: October 19, 2004
    Inventor: John Farah
  • Publication number: 20040033006
    Abstract: Polymer substrates, in particular polyimide substrates, and polymer laminates for optical applications are described. Polyimide substrates are polished to an average surface roughness of about 0.25 &mgr;inch, and single-layer or multi-layer waveguide structures are deposited on the polished polyimide substrates. Laminates including polymer or a hybrid organic/inorganic waveguiding film can be deposited on a polished polyimide substrate. The laminate can also include ceramic, piezoelectric and metallic layers. Optical waveguide devices are machined by laser ablation using a combination of IR and UV lasers. A waveguide-fiber coupler with a laser-machined groove for holding the fiber is also disclosed.
    Type: Application
    Filed: May 2, 2003
    Publication date: February 19, 2004
    Inventor: John Farah
  • Publication number: 20030156812
    Abstract: Polymer substrates, in particular polyimide substrates, and polymer laminates for optical applications are described. Polyimide substrates are polished on one or both sides depending on their thickness, and single-layer or multi-layer waveguide structures are deposited on the polished polyimide substrates. Optical waveguide devices are machined by laser ablation using a combination of IR and UV lasers. A waveguide-fiber coupler with a laser-machined groove for retaining the fiber is also disclosed.
    Type: Application
    Filed: December 13, 2002
    Publication date: August 21, 2003
    Inventors: John Farah, V. S. Sudarshanam
  • Patent number: 6563998
    Abstract: Polymer substrates, in particular polyimide substrates, and polymer laminates for optical applications are described. Polyimide substrates are polished on one or both sides depending on their thickness, and single-layer or multi-layer waveguide structures are deposited on the polished polyimide substrates. Optical waveguide devices are machined by laser ablation using a combination of IR and UV lasers. A waveguide-fiber coupler with a laser-machined groove for retaining the fiber is also disclosed.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: May 13, 2003
    Inventors: John Farah, Venkatapuram S. Sudarshanam
  • Patent number: 5891747
    Abstract: A method is presented to produce a change in the optical path length in the gap between two single mode optical fibers proportional to the lateral displacement of either fiber end normal to its axis. This is done with the use of refraction or diffraction at the interface between a guiding and non-guiding media to change the direction of propagation of the light in the gap. A method is also presented for laying a waveguide on a cantilever so that the displacement of the tip of the cantilever produces a proportional path length change in the gap by distancing the waveguide from the neutral axis of the cantilever. The fiber is supported as a cantilever or a waveguide is deposited on a micromachined cantilever and incorporated in an interferometer which is made totally on a silicon substrate with the use of integrated-optic technology.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: April 6, 1999
    Inventor: John Farah
  • Patent number: 5420688
    Abstract: A method is presented to produce a change in the optical path length in the gap between two single mode optical fibers proportional to the lateral displacement of either fiber end normal to its axis. This is done with the use of refraction or diffraction at the interface between a guiding and non-guiding media to change the direction of propagation of the light in the gap. A method is also presented for laying a waveguide on a cantilever so that the displacement of the tip of the cantilever produces a proportional path length change in the gap by distancing the waveguide from the neutral axis of the cantilever. The fiber is supported as a cantilever or a waveguide is deposited on a micromachined cantilever and incorporated in an interferometer which is made totally on a silicon substrate with the use of integrated-optic technology.
    Type: Grant
    Filed: December 14, 1992
    Date of Patent: May 30, 1995
    Inventor: John Farah