Patents Assigned to OmniGuide Communications
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Patent number: 7072553Abstract: 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? and 80?, wherein ? is a wavelength corresponding to a central frequency in the first frequency range.Type: GrantFiled: July 16, 2003Date of Patent: July 4, 2006Assignee: OmniGuide CommunicationsInventors: Steven G. Johnson, Mihai Ibanescu, Ori Weisberg, Yoel Fink, John D. Joannopoulos, Maksim Skorobogatiy, Torkel Engeness, Marin Soljacic, Steven A. Jacobs
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Patent number: 6903873Abstract: A reflector, a method of producing same and a method of creating high omnidirectional reflection for a predetermined range of frequencies of incident electromagnetic energy for any angle of incidence and any polarization. The reflector includes a structure with a surface and a refractive index variation along the direction perpendicular to the surface while remaining nearly uniform along the surface. The structure is configured such that i) a range of frequencies exists defining a photonic band gap for electromagnetic energy incident along the perpendicular direction of said surface, ii) a range of frequencies exists defining a photonic band gap for electromagnetic energy incident along a direction approximately 90° from the perpendicular direction of said surface, and iii) a range of frequencies exists which is common to both of said photonic band gaps. In an exemplary embodiment, the reflector is configured as a photonic crystal.Type: GrantFiled: August 8, 2000Date of Patent: June 7, 2005Assignee: OmniGuide CommunicationsInventors: John D. Joannopoulos, Shanhui Fan, Joshua N. Winn, Yoel Fink
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Patent number: 6898359Abstract: High index-contrast fiber waveguides, materials for forming high index-contrast fiber waveguides, and applications of high index-contrast fiber waveguides are disclosed.Type: GrantFiled: April 12, 2002Date of Patent: May 24, 2005Assignee: OmniGuide CommunicationsInventors: Marin Soljacic, Mihai Ibanescu, Torkel Engeness, Maksim Skorobogatiy, Steven G. Johnson, Ori Weisberg, Yoel Fink, Rokan U. Ahmad, Lori Pressman, Wesley A. King, Emilia Anderson, John D. Joannopoulos
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Patent number: 6895154Abstract: 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: GrantFiled: January 25, 2002Date of Patent: May 17, 2005Assignee: OmniGuide CommunicationsInventors: Steven G. Johnson, Mihai Ibanescu, Ori Weisberg, Yoel Fink, John D. Joannopolous, Maksim Skorobogatiy, Torkel Engeness, Marin Soljacic, Steven A. Jacobs
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Patent number: 6879386Abstract: Techniques for monitoring the quality (e.g., optical and mechanical properties) in optical waveguides (e.g., photonic crystal fibers) are disclosed. Additionally, techniques for detecting and localizing defects in the waveguides are also described. Pulses of light are launched into one end of an optical waveguide. The amount of light scattered out of the same end of the waveguide (i.e., a backscattered or reflected signal) is monitored at certain wavelengths specific to the spectral characteristics of the waveguide. Transmission characteristics and defect localization can be determined from the backscattered signal.Type: GrantFiled: February 7, 2002Date of Patent: April 12, 2005Assignee: OmniGuide CommunicationsInventors: Max Shurgalin, Yoel Fink, Steven G. Johnson, Mihai Ibanescu
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Publication number: 20050063633Abstract: Techniques for monitoring optical waveguides are disclosed.Type: ApplicationFiled: October 8, 2004Publication date: March 24, 2005Applicant: OmniGuide Communications Inc.Inventors: Max Shurgalin, Yoel Fink, Steven Johnson, Mihai Ibanescu
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Patent number: 6816243Abstract: Techniques for monitoring optical waveguides are disclosed.Type: GrantFiled: March 5, 2002Date of Patent: November 9, 2004Assignee: OmniGuide CommunicationsInventors: Max Shurgalin, Yoel Fink, Steven G. Johnson, Mihai Ibanescu
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Patent number: 6801698Abstract: High index-contrast fiber waveguides, materials for forming high index-contrast fiber waveguides, and applications of high index-contrast fiber waveguides are disclosed.Type: GrantFiled: April 12, 2002Date of Patent: October 5, 2004Assignee: OmniGuide CommunicationsInventors: Wesley A. King, Emilia Anderson, Marin Soljacic, Mihai Ibanescu, Torkel Engeness, Maksim Skorobogatiy, Steven G. Johnson, Ori Weisberg, Yoel Fink, Rokan U. Ahmad, Lori Pressman
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Patent number: 6788864Abstract: High index-contrast fiber waveguides, materials for forming high index-contrast fiber waveguides, and applications of high index-contrast fiber waveguides are disclosed.Type: GrantFiled: April 12, 2002Date of Patent: September 7, 2004Assignee: OmniGuide CommunicationsInventors: Rokan U. Ahmad, Marin Soljacic, Mihai Ibanescu, Torkel Engeness, Maksim Skorobogatly, Steven G. Johnson, Ori Weisberg, Yoel Fink, Lori Pressman, Wesley A. King, Emilia Anderson, John D. Joannopoulos
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Patent number: 6728439Abstract: A photonic crystal waveguide having multiple guided modes, the waveguide comprising: a dielectric confinement region surrounding a waveguide axis, the confinement region comprising a photonic crystal having at least one photonic band gap, during operation the confinement region guides EM radiation in a first range of frequencies to propagate along the waveguide axis; a dielectric core region extending along the waveguide axis and surrounded by the confinement region about the waveguide axis; and a mode coupling segment comprising at least one bend in the waveguide axis, wherein during operation the mode coupling segment converts EM energy in a first guided mode to a second guided mode with a conversion efficiency greater than 10% for a frequency in the first range of frequencies.Type: GrantFiled: March 21, 2003Date of Patent: April 27, 2004Assignee: OmniGuide CommunicationsInventors: Ori Weisberg, Steven G. Johnson, John D. Joannopoulos, Michael Shapiro, Yoel Fink, Mihai Ibanescu
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Publication number: 20040013379Abstract: 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: ApplicationFiled: July 16, 2003Publication date: January 22, 2004Applicant: OmniGuide Communications, a Delaware corporationInventors: Steven G. Johnson, Mihai Ibanescu, Ori Weisberg, Yoel Fink, John D. Joannopoulos, Maksim Skorobogatiy, Torkel Engeness, Marin Soljacic, Steven A. Jacobs
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Publication number: 20030185505Abstract: A method for converting electromagnetic (EM) energy between guided modes of a photonic crystal waveguide having a waveguide axis, the method including: (i) providing the photonic crystal waveguide with a mode coupling segment comprising at least one bend in the waveguide axis, wherein during operation the mode coupling segment converts EM energy in a first guided mode to a second guided mode; (ii) providing EM energy in the first guided mode of the photonic crystal waveguide; and (iii) allowing the EM energy in the first guided mode to encounter the mode coupling segment to convert at least some of the EM energy in the first guided mode to EM energy in the second guided mode.Type: ApplicationFiled: March 21, 2003Publication date: October 2, 2003Applicant: Omniguide Communications, a Delaware corporationInventors: Ori Weisberg, Steven G. Johnson, John D. Joannopoulos, Michael Shapiro, Yoel Fink, Mihai Ibanescu
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Patent number: 6625364Abstract: 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: GrantFiled: January 25, 2002Date of Patent: September 23, 2003Assignee: OmniGuide CommunicationsInventors: Steven G. Johnson, Mihai Ibanescu, Ori Weisberg, Yoel Fink, John D. Joannopoulos, Maksim Skorobogatiy, Torkel Engeness, Marin Soljacic, Steven A. Jacobs
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Patent number: 6563981Abstract: A method for converting electromagnetic (EM) energy between guided modes of a photonic crystal waveguide having a waveguide axis, the method including: (i) providing the photonic crystal waveguide with a mode coupling segment comprising at least one bend in the waveguide axis, wherein during operation the mode coupling segment converts EM. energy in a first guided mode to a second guided mode; (ii) providing EM energy in the first guided mode of the photonic crystal waveguide; and (iii) allowing the EM energy in the first guided mode to encounter the mode coupling segment to convert at least some of the EM energy in the first guided mode to EM energy in the second guided mode.Type: GrantFiled: January 31, 2002Date of Patent: May 13, 2003Assignee: Omniguide CommunicationsInventors: Ori Weisberg, Steven G. Johnson, John D. Joannopolous, Michael Shapiro, Yoel Fink, Mihai Ibanescu