Patents by Inventor George E. Berkey
George E. Berkey 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).
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Patent number: 8007731Abstract: A device for treating fluids, such as automotive exhaust gases is provided, as well as a method of manufacturing such a device. The device provides a honeycomb structure, a matrix of ceramic walls that defines a plurality of parallel, fluid-conducting cells oriented along an axis, arranged in a stacked or discontinuous configuration between an inlet and outlet, where adjacent layers of honeycomb structure are separated by layers of air spaces. Each matrix layer has opposing faces that defines the inlets and outlets of the cells, and a peripheral portion or peripheral region including an outer skin. The peripheral portions or peripheral regions of adjacent stacked ceramic layers are mutually contiguous to prevent fluid flowing through the stacked ceramic layers from leaking between said outer skins.Type: GrantFiled: August 10, 2007Date of Patent: August 30, 2011Assignee: Corning IncorporatedInventors: George E. Berkey, Keith L. House
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Patent number: 7496244Abstract: A method for generating a linear single-polarization output beam comprises providing an optically active linearly birefringent and linearly dichroic fiber for propagating light and having a single polarization wavelength range and a gain bandwidth; optically pumping the optically active linearly birefringent and linearly dichroic fiber for obtaining fluorescence within the gain bandwidth; and aligning the single-polarization wavelength range to overlap a desired spectral region of the gain profile.Type: GrantFiled: August 3, 2006Date of Patent: February 24, 2009Assignee: Corning IncorporatedInventors: George E. Berkey, Ming-Jun Li, Daniel A. Nolan, Donnell T. Walton, Luis A. Zenteno
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Publication number: 20090041635Abstract: A device for treating fluids, such as automotive exhaust gases is provided, as well as a method of manufacturing such a device. The invention provides a honeycomb structure, a matrix of ceramic walls that defines a plurality of parallel, fluid-conducting cells oriented along an axis, arranged in a stacked or discontinuous configuration between an inlet and outlet, where adjacent layers of honeycomb structure are separated by layers of air spaces. Each matrix layer has opposing faces that defines the inlets and outlets of the cells, and a peripheral portion or peripheral region including an outer skin. The peripheral portions or peripheral regions of adjacent stacked ceramic layers are mutually contiguous to prevent fluid flowing through the stacked ceramic layers from leaking between said outer skins.Type: ApplicationFiled: August 10, 2007Publication date: February 12, 2009Inventors: George E. Berkey, Keith L. House
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Publication number: 20090003753Abstract: A method for generating a linear single-polarization output beam comprises providing an optically active linearly birefringent and linearly dichroic fiber for propagating light and having a single polarization wavelength range and a gain bandwidth; optically pumping the optically active linearly birefringent and linearly dichroic fiber for obtaining fluorescence within the gain bandwidth; and aligning the single-polarization wavelength range to overlap a desired spectral region of the gain profile.Type: ApplicationFiled: August 3, 2006Publication date: January 1, 2009Inventors: George E. Berkey, Ming-Jun Li, Daniel A. Nolan, Donnell T. Walton, Luis A. Zenteno
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Patent number: 7280728Abstract: An optical fiber including: (i) a silica based, rare earth doped core having a first index of refraction n1; (ii) a silica based inner cladding surrounding the core and having a second index of refraction n2, such that n1>n2, said inner cladding having a plurality of air holes extending longitudinally through the length of said optical fiber; (iii) a silica based outer cladding surrounding said inner cladding and having a third index of refraction n3, such that n2>n3, wherein said optical fiber supports a single polarization mode within the operating wavelength range.Type: GrantFiled: October 22, 2004Date of Patent: October 9, 2007Assignee: Corning IncorporatedInventors: George E Berkey, Xin Chen, Joohyun Koh, Ming-Jun Li, Daniel A Nolan, Donnell T Walton, Ji Wang, Luis A Zenteno
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Patent number: 7194172Abstract: An optical fiber that includes a central core having a maximum dimension (A) greater than a minimum dimension (B), preferably with an aspect ratio greater than 1.5, the fiber having at least one air hole positioned on opposite sides of the central core and extending along the fiber's length wherein the fiber supports a single polarization mode within an operating wavelength band. The fiber may be coupled to optical components in systems to provide single polarization in the band. A method for manufacturing the fiber is also provided.Type: GrantFiled: June 9, 2004Date of Patent: March 20, 2007Assignee: Corning IncorporatedInventors: George E. Berkey, Xin Chen, Ming-Jun Li, Daniel A. Nolan, William A. Wood
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Patent number: 7158705Abstract: According to the present invention the optical fiber includes a core with a first refractive index (n1) and the innermost core region with the refractive index n0, a cladding surrounding the core, the cladding having a third refractive index (n3), wherein n1>n3 and n0<n1. According to some of the embodiments the optical fiber may also include a moat surrounding and abutting the core and situated between the core and the cladding, the moat having a second refractive index (n2), wherein n3>n2. It is preferable that at least one of the core, innermost core region and/or moat has a non-circular shape.Type: GrantFiled: August 30, 2004Date of Patent: January 2, 2007Assignee: Corning IncorporatedInventors: George E Berkey, Xin Chen, Ming-Jun Li, Daniel A Nolan, Ji Wang, William A Wood, Luis A Zenteno
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Patent number: 7120340Abstract: An optically active linear single polarization device includes a linearly birefringent and linearly dichroic optical waveguide (30) for propagating light and having single polarization wavelength range (48). A plurality of active dopants are disposed in a portion (34) of the linearly birefringent and linearly dichroic optical waveguide (30) for providing operation of the waveguide in an operating wavelength range (650) for overlapping the single polarization wavelength range (48).Type: GrantFiled: October 30, 2003Date of Patent: October 10, 2006Assignee: Corning IncorporatedInventors: George E. Berkey, Ming-Jun Li, Daniel A. Nolan, Donnell T. Walton, Luis A. Zenteno
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Patent number: 7076141Abstract: Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical waveguide fiber and preforms made via OVD. The fibers may be hydrogen resistant, i.e. exhibit low hydrogen aged attenuation. A low water peak, hydrogen resistant optical waveguide fiber is disclosed which exhibits an optical attenuation at a wavelength of about 1383 nm which is less than or equal to an optical attenuation exhibited at a wavelength of about 1310 nm.Type: GrantFiled: May 6, 2005Date of Patent: July 11, 2006Assignee: Corning IncorporatedInventors: George E. Berkey, Dana C. Bookbinder, Richard M. Fiacco, Dale R. Powers
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Patent number: 6970632Abstract: Disclosed is an optical fiber (20) having a centermost laterally-elongated core (30) having a short dimension (a), a long dimension (b) and a first refractive index (n1), a moat (40) surrounding the central laterally-elongated core, the moat (40) having a second refractive index (n2), an outer dimension (c) and an outer dimension (d), and a cladding (50) surrounding the moat (40), the cladding (50) having a third refractive index (n3), wherein n1>n3>n2, a ratio of b/a is between 1.5 and 5.0, and a ratio of d/a is between 2.0 and 7.0. The fiber supports a single (one and only one) polarization within a Single Polarization Band (SPB). The fiber (20) may be coupled to optical components in apparatus where single polarization properties are desired.Type: GrantFiled: May 3, 2004Date of Patent: November 29, 2005Assignee: Corning IncorporatedInventors: George E. Berkey, Xin Chen
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Patent number: 6944382Abstract: Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical waveguide fiber and preforms made via OVD. The fibers may be hydrogen resistant, i.e. exhibit low hydrogen aged attenuation. A low water peak, hydrogen resistant optical waveguide fiber is disclosed which exhibits an optical attenuation at a wavelength of about 1383 nm which is less than or equal to an optical attenuation exhibited at a wavelength of about 1310 nm.Type: GrantFiled: February 6, 2004Date of Patent: September 13, 2005Assignee: Corning IncorporatedInventors: George E. Berkey, Dana C. Bookbinder, Richard M. Fiacco, Dale R. Powers
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Patent number: 6904772Abstract: Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical waveguide fiber and preforms made via OVD. The fibers may be hydrogen resistant, i.e. exhibit low hydrogen aged attenuation. A low water peak, hydrogen resistant optical waveguide fiber is disclosed which exhibits an optical attenuation at a wavelength of about 1383 nm which is less than or equal to an optical attenuation exhibited at a wavelength of about 1310 nm.Type: GrantFiled: December 14, 2001Date of Patent: June 14, 2005Assignee: Corning IncorporatedInventors: George E. Berkey, Dana C. Bookbinder, Richard M. Fiacco, Dale R. Powers
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Patent number: 6883351Abstract: The method of fabricating an optical waveguide fiber from a preform having a centerline aperture which includes reducing the pressure in the centerline aperture, then increasing the pressure in the centerline aperture to a pressure in order to improve uniformity, circularity, and/or symmetry around the centerline aperture region.Type: GrantFiled: July 22, 2002Date of Patent: April 26, 2005Assignee: Corning IncorporatedInventors: George E. Berkey, David T. Marlowe, Douglas G. Neilson, Jeffrey C. Nelson
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Patent number: 6865328Abstract: The present invention provides devices and methods for dispersion compensation. According to one embodiment of the invention, a dispersion compensating device includes a negative dispersion fiber having an input configured to receive the optical signal, the negative dispersion fiber having a length and dispersion sufficient to remove any positive chirp from each wavelength channel of the optical signal, thereby outputting a negatively chirped optical signal; an amplifying device configured to amplify the negatively chirped optical signal; and a nonlinear positive dispersion fiber configured to receive the negatively chirped optical signal. The devices of the present invention provide broadband compensation for a systems having a wide range of variable residual dispersions.Type: GrantFiled: April 1, 2003Date of Patent: March 8, 2005Assignee: Corning IncorporatedInventors: George E Berkey, Ming-Jun Li, Daniel A Nolan
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Publication number: 20040258377Abstract: An optically active linear single polarization device includes a linearly birefringent and linearly dichroic optical waveguide (30) for propagating light and having single polarization wavelength range (48). A plurality of active dopants are disposed in a portion (34) of the linearly birefringent and linearly dichroic optical waveguide (30) for providing operation of the waveguide in an operating wavelength range (650) for overlapping the single polarization wavelength range (48).Type: ApplicationFiled: October 30, 2003Publication date: December 23, 2004Inventors: George E. Berkey, Ming-Jun Li, Daniel A. Nolan, Donnell T. Walton, Luis A. Zenteno
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Publication number: 20040258379Abstract: An optical fiber that includes a central core having a maximum dimension (A) greater than a minimum dimension (B), preferably with an aspect ratio greater than 1.5, the fiber having at least one air hole positioned on opposite sides of the central core and extending along the fiber's length wherein the fiber supports a single polarization mode within an operating wavelength band. The fiber may be coupled to optical components in systems to provide single polarization in the band. A method for manufacturing the fiber is also provided.Type: ApplicationFiled: June 9, 2004Publication date: December 23, 2004Inventors: George E. Berkey, Xin Chen, Ming-Jun Li, Daniel A. Nolan, William A. Wood
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Patent number: 6829422Abstract: Disclosed is a dispersion compensating and dispersion slope compensating single mode optical waveguide fiber. The refractive index profiles of waveguide fibers in accord with the invention are disclosed and described. These index profiles provide a waveguide fiber having negative total dispersion and negative total dispersion slope so that a standard waveguide fiber is compensated over an extended wavelength range. A telecommunications link using the fiber in accord with the invention is also disclosed and described. A standard fiber to compensating fiber length ratio in the range of 1:1 to 3:1 is shown to give optimum link performance with respect to limiting non-linear dispersion effects.Type: GrantFiled: January 30, 2003Date of Patent: December 7, 2004Assignee: Corning IncorporatedInventors: George E. Berkey, Scott R. Bickham, Michael B. Cain, Pamela A. Hajcak, Upendra H. Manyam, Snigdharaj K. Mishra, V. Srikant
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Patent number: 6798962Abstract: The present invention provides an optical fiber, comprising a core having an alpha parameter in the range of approximately 2 to approximately 8, a maximum index percent difference between the core and a cladding in the range of approximately 0.3% to approximately 0.5% and a core diameter in the range of approximately 6.0 to approximately 16.0 &mgr;m and a cladding. The optical fiber has a bandwidth of at least approximately 0.6 GHz.km at 850 nm, and is configured for multimode operation at a wavelength less than 1300 nm and single mode operation at a wavelength of at least approximately 1300 nm. The fiber also has significantly reduced intermodal noise. The present invention also includes a method of designing such a fiber, a fiber optic system provided such a fiber and a method of operating a fiber optic system with such a fiber.Type: GrantFiled: February 26, 2002Date of Patent: September 28, 2004Assignee: Corning IncorporatedInventors: George E. Berkey, Yanming Liu, Walter F. Love, Daiping Ma
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Publication number: 20040161216Abstract: Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical waveguide fiber and preforms made via OVD. The fibers may be hydrogen resistant, i.e. exhibit low hydrogen aged attenuation. A low water peak, hydrogen resistant optical waveguide fiber is disclosed which exhibits an optical attenuation at a wavelength of about 1383 nm which is less than or equal to an optical attenuation exhibited at a wavelength of about 1310 nm.Type: ApplicationFiled: February 6, 2004Publication date: August 19, 2004Inventors: George E. Berkey, Dana C. Bookbinder, Richard M. Fiacco, Dale R. Powers
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Patent number: 6760527Abstract: An optical waveguide fiber having a relatively large effective area which exhibits low attenuation, low PMD and low microbending sensitivity. A step-index refractive index profile is advantageously used.Type: GrantFiled: May 29, 2003Date of Patent: July 6, 2004Assignee: Corning IncorporatedInventors: George E. Berkey, Daiping Ma, Snigdharaj K. Mishra