Patents by Inventor Alan J. Morrow
Alan J. Morrow 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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Publication number: 20040076381Abstract: An optical submodule includes an optical assembly, an input port and an output port. The input port accepts an input optical fiber and retains the input optical fiber in proper orientation with respect to the optical assembly. The output port accepts an output optical fiber and retains the output optical fiber in proper orientation with respect to the optical assembly. In one embodiment, the input and output optical fibers each include a collimating lens. In another embodiment, the collimating lenses for the input and output optical fibers are included within the optical assembly.Type: ApplicationFiled: May 29, 2003Publication date: April 22, 2004Inventors: Alan J. Morrow, Romain Ramel, Felix Scotta
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Patent number: 6044191Abstract: A single-mode optical waveguide fiber designed to limit power penalty due to four wave mixing and a method of making the waveguide is disclosed. Variations in properties, e.g., radius or refractive index, of the waveguide fiber core provide a total dispersion which varies along the length of the waveguide. The algebraic sum of products of length times total dispersion is controlled to a pre-selected value for each waveguide fiber which makes up a system link Proper choice of total dispersion variation magnitude and sub-length results in a system link wherein a signal travels only short distances in waveguide portions having total dispersion near zero. However, the variation of the total dispersion provides a system link which has a pre-selected dispersive effect on the signal over a selected wavelength range. The dispersive effect on the signal can be chosen to be essentially zero. A number of techniques for fabricating DM fiber are also disclosed.Type: GrantFiled: November 3, 1998Date of Patent: March 28, 2000Assignee: Corning IncorporatedInventors: George E. Berkey, Venkata A. Bhagavatula, Peter C. Jones, Donald B. Keck, Yanming Liu, Robert A. Modavis, Alan J. Morrow, Mark A. Newhouse, Daniel A. Nolan
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Patent number: 5894537Abstract: A single-mode optical waveguide fiber designed to limit power penalty due to four wave mixing and a method of making the waveguide is disclosed. Variations in properties, e.g., radius or refractive index, of the waveguide fiber core provide a total dispersion which varies along the length of the waveguide. The algebraic sum of products of length times total dispersion is controlled to a pre-selected value for each waveguide fiber which makes up a system link. Proper choice of total dispersion variation magnitude and sub-length results in a system link wherein a signal travels only short distances in waveguide portions having total dispersion near zero. However, the variation of the total dispersion provides a system link which has a pre-selected dispersive effect on the signal over a selected wavelength range. The dispersive effect on the signal can be chosen to be essentially zero. A number of techniques for fabricating DM fiber are also disclosed.Type: GrantFiled: January 11, 1996Date of Patent: April 13, 1999Assignee: Corning IncorporatedInventors: George E. Berkey, Venkata A. Bhagavatula, Peter C. Jones, Donald B. Keck, Yanming Liu, Robert A. Modavis, Alan J. Morrow, Mark A. Newhouse, Daniel A. Nolan
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Patent number: 5681365Abstract: A radiation resistant optical waveguide fiber doped with fluorine or drawn with low tension in the fiber. The fluorine doping is substantially constant across the core and a portion of the clad adjacent the core. The concentration of the fluorine is in the range of about 0.3 to 3.0 weight percent. The draw tension is less than or equal to about 5 grams (40 dynes/cm.sup.2) to achieve optimum radiation resistance. A synergy is found when fluorine and low draw tension are applied to a fiber. Improvement in radiation resistance is largely independent of fiber type and geometry. Further improvement in radiation resistance is found when germanium is doped in a portion of the clad adjacent the core.Type: GrantFiled: March 28, 1995Date of Patent: October 28, 1997Assignee: Corning IncorporatedInventors: John W. Gilliland, Alan J. Morrow, Kenneth Sandhage
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Patent number: 5509101Abstract: A radiation resistant optical waveguide fiber doped with fluorine or drawn with low tension in the fiber. The fluorine doping is substantially constant across the core and a portion of the clad adjacent the core. The concentration of the fluorine is in the range of about 0.3 to 3.0 weight percent. The draw tension is less than or equal to about 5 grams (40 dynes/cm.sup.2) to achieve optimum radiation resistance. A synergy is found when fluorine and low draw tension are applied to a fiber. Improvement in radiation resistance is largely independent of fiber type and geometry.Further improvement in radiation resistance is found when germanium is doped in a portion of the clad adjacent the core.Type: GrantFiled: July 11, 1994Date of Patent: April 16, 1996Assignee: Corning IncorporatedInventors: John W. Gilliland, Alan J. Morrow, Kenneth Sandhage
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Patent number: 5203898Abstract: Disclosed is a method of forming a glass tube doped with boron and fluorine. A B.sub.2 O.sub.3 -doped tubular porous preform is heated, and a fluorine-containing gas is flowed into its aperture. The temperature is sufficiently high to cause the fluorine-containing gas to decompose and form fluorine which dopes the preform. Also flowed into the aperture is a sufficient amount of BF.sub.3 to prevent fluorine from reacting with the B.sub.2 O.sub.3 in the porous preform and forming a B.sub.2 O.sub.3 -depleted region near the aperture surface. The particles are then fused to form a fluorine-containing dense glass tube.Type: GrantFiled: December 16, 1991Date of Patent: April 20, 1993Assignee: Corning IncorporatedInventors: Norman W. Carpenter, Alan J. Morrow, Donald R. Young, Jr.
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Patent number: 5146519Abstract: An apparatus for selectively transmitting input optical signals carried on input optical fibers to output optical fibers. A three refractive index tapered wave guide structure is bent and maintained in the bent state. This structure is, thereafter, rotated in the bent state. The coupling characteristics are tunable based on the degree of rotation.Type: GrantFiled: August 28, 1990Date of Patent: September 8, 1992Assignee: Corning IncorporatedInventors: William J. Miller, Alan J. Morrow
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Patent number: 4413882Abstract: Solid glass articles are made by the flame hydrolysis technique. A thin stratum of low viscosity glass soot is applied to the surface of a mandrel. First and second coatings of glass soot are deposited on the surface of the thin stratum to form a porous preform. The refractive index of the soot particles of the first coating is greater than that of the soot of the second coating, and the soot of the first coating has a viscosity lower than that of the second coating. The mandrel is removed, and the soot preform is subjected to a high temperature whereby it is consolidated to form a dense glass blank. The glass surface tension and the relative viscosities of the inner and outer portions of the preform cause the aperture to close during the consolidation process. The thin stratum, which preferably includes P.sub.2 O.sub.5, smoothes over the damage caused by removing the mandrel and reduces or even eliminates seed formation at the axis of the resultant glass blank.Type: GrantFiled: May 26, 1981Date of Patent: November 8, 1983Assignee: Corning Glass WorksInventors: Alan C. Bailey, Alan J. Morrow
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Patent number: 4298365Abstract: A method of making solid glass articles by the flame hydrolysis technique. A thin stratum of low viscosity glass soot is applied to the surface of a mandrel. First and second coatings of glass soot are deposited on the surface of the thin stratum to form a porous preform. The refractive index of the soot particles of the first coating is greater than that of the soot of the second coating, and the soot of the first coating has a viscosity lower than that of the second coating. The mandrel is removed, and the soot preform is subjected to a high temperature whereby it is consolidated to form a dense glass blank. The glass surface tension and the relative viscosities of the inner and outer portions of the preform cause the aperture to close during the consolidation process. The thin stratum, which preferably includes P.sub.2 O.sub.5, smoothes over the damage caused by removing the mandrel and reduces or even eliminates seed formation at the axis of the resultant glass blank.Type: GrantFiled: July 3, 1980Date of Patent: November 3, 1981Assignee: Corning Glass WorksInventors: Alan C. Bailey, Alan J. Morrow