Patents by Inventor Steven A. Jacobs

Steven A. Jacobs 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).

  • Photonic crystal optical waveguides having tailored dispersion profiles
    Patent number: 6895154
    Abstract: An optical waveguide having a working mode with a tailored dispersion profile, the waveguide including: (i) a dielectric confinement region surrounding a waveguide axis, the confinement region comprising a photonic crystal having at least one photonic bandgap, wherein during operation the confinement region guides EM radiation in a first range of frequencies to propagate along the waveguide axis; (ii) a dielectric core region extending along the waveguide axis and surrounded by the confinement region about the waveguide axis, wherein the core supports at least one guided mode in the first frequency range; and (iii) a dielectric dispersion tailoring region surrounded by the confinement region about the waveguide axis, wherein the dispersion tailoring region introduces one or more additional modes in the first range of frequencies that interact with the guided mode to produce the working mode.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: May 17, 2005
    Assignee: OmniGuide Communications
    Inventors: Steven G. Johnson, Mihai Ibanescu, Ori Weisberg, Yoel Fink, John D. Joannopolous, Maksim Skorobogatiy, Torkel Engeness, Marin Soljacic, Steven A. Jacobs
  • Dielectric waveguide and method of making the same
    Publication number: 20040141702
    Abstract: In general, in one aspect, the invention features a waveguide that includes a first portion extending along a waveguide axis including a first chalcogenide glass, and a second portion extending along the waveguide axis including a second chalcogenide glass, wherein the second chalcogenide glass is different from the first chalcogenide glass.
    Type: Application
    Filed: November 24, 2003
    Publication date: July 22, 2004
    Inventors: Vladimir Fuflyigin, Emilia Anderson, Wesley A. King, Yoel Fink, Steven A. Jacobs, Maksim Skorobogatiy
  • Low-loss photonic crystal waveguide having large core radius
    Publication number: 20040013379
    Abstract: An optical waveguide including: a dielectric core region extending along a waveguide axis; and a dielectric confinement region surrounding the core about the waveguide axis, the confinement region comprising a photonic crystal structure having a photonic band gap, wherein during operation the confinement region guides EM radiation in at least a first range of frequencies to propagate along the waveguide axis, wherein the core has an average refractive index smaller than about 1.3 for a frequency in the first range of frequencies, and wherein the core a diameter in a range between about 4&lgr; and 80&lgr;, wherein &lgr; is a wavelength corresponding to a central frequency in the first frequency range.
    Type: Application
    Filed: July 16, 2003
    Publication date: January 22, 2004
    Applicant: OmniGuide Communications, a Delaware corporation
    Inventors: Steven G. Johnson, Mihai Ibanescu, Ori Weisberg, Yoel Fink, John D. Joannopoulos, Maksim Skorobogatiy, Torkel Engeness, Marin Soljacic, Steven A. Jacobs
  • Low-loss photonic crystal waveguide having large core radius
    Patent number: 6625364
    Abstract: An optical waveguide including: a dielectric core region extending along a waveguide axis; and a dielectric confinement region surrounding the core about the waveguide axis, the confinement region comprising a photonic crystal structure having a photonic band gap, wherein during operation the confinement region guides EM radiation in at least a first range of frequencies to propagate along the waveguide axis, wherein the core has an average refractive index smaller than about 1.3 for a frequency in the first range of frequencies, and wherein the core a diameter in a range between about 4 &lgr; and 80 &lgr;, wherein &lgr; is a wavelength corresponding to a central frequency in the first frequency range.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: September 23, 2003
    Assignee: OmniGuide Communications
    Inventors: Steven G. Johnson, Mihai Ibanescu, Ori Weisberg, Yoel Fink, John D. Joannopoulos, Maksim Skorobogatiy, Torkel Engeness, Marin Soljacic, Steven A. Jacobs
  • Photonic crystal optical waveguides having tailored dispersion profiles
    Publication number: 20020176676
    Abstract: An optical waveguide having a working mode with a tailored dispersion profile, the waveguide including: (i) a dielectric confinement region surrounding a waveguide axis, the confinement region comprising a photonic crystal having at least one photonic bandgap, wherein during operation the confinement region guides EM radiation in a first range of frequencies to propagate along the waveguide axis; (ii) a dielectric core region extending along the waveguide axis and surrounded by the confinement region about the waveguide axis, wherein the core supports at least one guided mode in the first frequency range; and (iii) a dielectric dispersion tailoring region surrounded by the confinement region about the waveguide axis, wherein the dispersion tailoring region introduces one or more additional modes in the first range of frequencies that interact with the guided mode to produce the working mode.
    Type: Application
    Filed: January 25, 2002
    Publication date: November 28, 2002
    Inventors: Steven G. Johnson, Mihai Ibanescu, Ori Weisberg, Yoel Fink, John D. Joannopoulos, Maksim Skorobogatiy, Torkel Engeness, Marin Soljacic, Steven A. Jacobs
  • Low-loss photonic crystal waveguide having large core radius
    Publication number: 20020164137
    Abstract: An optical waveguide including: a dielectric core region extending along a waveguide axis; and a dielectric confinement region surrounding the core about the waveguide axis, the confinement region comprising a photonic crystal structure having a photonic band gap, wherein during operation the confinement region guides EM radiation in at least a first range of frequencies to propagate along the waveguide axis, wherein the core has an average refractive index smaller than about 1.3 for a frequency in the first range of frequencies, and wherein the core a diameter in a range between about 4&lgr; and 80&lgr;, wherein &lgr; is a wavelength corresponding to a central frequency in the first frequency range.
    Type: Application
    Filed: January 25, 2002
    Publication date: November 7, 2002
    Inventors: Steven G. Johnson, Mihai Ibanescu, Ori Weisberg, Yoel Fink, John D. Joannopoulos, Maksim Skorobogatiy, Torkel Engeness, Marin Soljacic, Steven A. Jacobs
  • Laxative composition
    Publication number: 20020071872
    Abstract: The present invention provides a composition comprising a) a laxative selected from the group consisting of bisacodyl and enteric coated vanilloid compounds; and b) simethicone in an amount effective to enhance the efficacy of the laxative. The simethicone enhances the transit of the laxatives through the small bowel.
    Type: Application
    Filed: August 8, 2001
    Publication date: June 13, 2002
    Inventors: Gerard P. McNally, Charles E. Pendley, Brid T. Burruano, Nancy B. Rainey, Steven A. Jacobs, Shun Por Li, Michael E. Mertzman, David W. Wynn, Anthony J. Le Storti