Patents by Inventor Arthur D. Pearson

Arthur D. Pearson 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).

  • Optical fiber fabrication process
    Patent number: 4526599
    Abstract: A method of forming optical fibers with minimal contamination from ambient air is disclosed. In the inventive method a gas stream is introduced into a rotating structure by means of a rotating seal. The rotating seal comprises a rotating member seated within a stationary member. Counterflowing gases are flowed through the clearance region between the rotating and stationary members to prevent seepage of ambient air into the gas stream.
    Type: Grant
    Filed: August 28, 1981
    Date of Patent: July 2, 1985
    Assignee: AT&T Bell Laboratories
    Inventors: Robert L. Barns, Arthur D. Pearson
  • Low dispension single mode fiber
    Patent number: 4447125
    Abstract: A low-loss single mode fiber with low total dispersion within the wavelength range 1.25-1.385 .mu.m and low added cabling loss is disclosed. The fiber has relatively high .DELTA. to assure low cabling loss. The high .DELTA. is obtained, however, without paying a cost in high material dispersion by providing at least 20 percent of the .DELTA. by down-doping of the fiber cladding.
    Type: Grant
    Filed: April 1, 1982
    Date of Patent: May 8, 1984
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Paul D. Lazay, Paul J. Lemaire, Arthur D. Pearson
  • Low dispersion single mode fiber
    Patent number: 4439007
    Abstract: A low-loss single mode fiber with low total dispersion within the wavelength range 1.25-1.385 .mu.m and low added cabling loss is disclosed. The fiber has relatively high .DELTA. to assure low cabling loss. The high .DELTA. is obtained, however, without paying a cost in high material dispersion by providing at least 20 percent of the .DELTA. by down-doping of the fiber cladding.
    Type: Grant
    Filed: June 9, 1981
    Date of Patent: March 27, 1984
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Paul D. Lazay, Paul J. Lemaire, Arthur D. Pearson
  • Optical fiber fabrication method and apparatus
    Patent number: 4278458
    Abstract: An optical fiber fabrication method and apparatus are described which are capable of producing reproducible and uniform layers of fiber quality glass. The formation of a saturated stream of glass precursor vapor by condensation allows for the delivery of calibrated predetermined quantities of vapor to an appropriate fiber fabrication apparatus, thereby permitting improved fabrication characteristics.
    Type: Grant
    Filed: February 7, 1979
    Date of Patent: July 14, 1981
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Paul B. O'Connor, Arthur D. Pearson
  • Optical fiber fabrication process
    Patent number: 4191545
    Abstract: Glass tubes which form an integral part of optical fiber preforms from which optical fibers are drawn are fabricated from tubular structures comprising amorphous powdery particles. The tubular structures are heated so as to fuse the particles thereby yielding a transparent tubular glass structure of optical fiber quality. During the fusing step, the structure is substantially constrained against shrinkage in both the radial and longitudinal direction thereby yielding a glass tube with improved dimensional characteristics.
    Type: Grant
    Filed: March 2, 1979
    Date of Patent: March 4, 1980
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: John B. MacChesney, Paul B. O'Connor, Arthur D. Pearson