Tracy F Brewer

US Patent:

59431261, Aug 24, 1999

Filed:

May 8, 1998

Appl. No.:

9/074865

Inventors:

Charles J. Aloisio - Atlanta GA
Theatrice S. Penn - Norcross GA
Leonardo M. Penn - Norcross GA
Tracy E. Brewer - Duluth GA
Shahabuddin Siddiqui - Lawrenceville GA

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G01N 2100

US Classification:

3562371

Abstract:

The present invention provides an optical detection system for detecting surface qualities on an optical fiber. The system comprises a light source for projecting a beam of light onto the outer surface of an optical fiber. An optical detector positioned adjacent the optical fiber receives light reflected from the outer surface of the optical fiber and generates an electrical output signal which is delivered to a signal processing device. The signal processing device analyzes the electrical output signal to determine whether one or more surface qualities exist on the outer surface of the optical fiber. In accordance with the preferred embodiment of the present invention, the optical detection system is used to detect surface qualities that include ink skips, i. e. , locations on the outer surface of the optical fiber that do not contain any ink. The signal processing device comprises a computer that records the intensity of the light received by the optical detector array, which corresponds to the magnitude of the electrical signal generated by the optical detector array, along with the location along the optical fiber that corresponds to the electrical output signal.

US Patent:

57868913, Jul 28, 1998

Filed:

Mar 11, 1997

Appl. No.:

8/815180

Inventors:

Christian Jakobsen - Copenhagen, DK
Flemming Pedersen - Farum, DK
Leonardo M. Penn - Norcross GA
Tracy E. Brewer - Charleston SC
Aarne Karp - Hamilton Square NJ
David H. Smithgall - East Windsor NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G01N 2100
G01N 2184
G01B 910

US Classification:

356237

Abstract:

The present invention provides an optical detection system for detecting defects in an optical fiber. The system includes a light source for coupling light into the secondary coating of an optical fiber at a preselected angle with respect to the longitudinal axis of the fiber and an optical detector positioned adjacent the fiber at a preselected distance from the point at which the light is coupled into the fiber coating. In accordance with one embodiment, the light is coupled into the fiber coating at a sufficiently shallow angle with respect to the longitudinal axis of the fiber to cause the light to travel through the coating in a direction substantially parallel to the axis of the optical fiber for some distance before exiting the coating. By placing the detector a preselected distance from the coupling point, detection of light reflected from the fiber at the coupling spot is avoided and only light reflected by defects contained in the primary or secondary coating layers, or light reflected by delaminations between the primary coating layer and the fiber, will be detected by the detector.

US Patent:

61146730, Sep 5, 2000

Filed:

May 28, 1999

Appl. No.:

9/321412

Inventors:

Tracy E. Brewer - Duluth GA
George F. DeVeau - Cumming GA
Daren Li - Marietta GA

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H05B 306

US Classification:

219530

Abstract:

A preferred embodiment of the housing incorporates an enclosure defining an interior cavity. A thermal bed is supported within the cavity and is configured to retain an optical integrated circuit within the cavity. First and second fiber members also are provided that each include a circuit end for engaging and optically communicating with the optical integrated circuit, and a coupling end for engaging a coupling. Preferably, the couplings are mounted to the enclosure so that an external fiber member can engage a coupling and optically communicate with the optical integrated circuit.

US Patent:

58284486, Oct 27, 1998

Filed:

Mar 11, 1997

Appl. No.:

8/814673

Inventors:

Christian Jakobsen - Copenhagen, DK
Flemming Pedersen - Farum, DK
Leonardo M. Penn - Norcross GA
Tracy E. Brewer - Charleston SC
Aarne Karp - Hamilton Square NJ
David H. Smithgall - Windsor NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G01N 2100
G01N 2184
G01B 910

US Classification:

356237

Abstract:

The present invention provides an optical detection system for detecting defects in an optical fiber. The system includes a light source for coupling light into the secondary coating of an optical fiber at a preselected angle with respect to the longitudinal axis of the fiber and an optical detector positioned adjacent the fiber at a preselected distance from the point at which the light is coupled into the fiber coating. In accordance with one embodiment, the light is coupled into the fiber coating at a sufficiently shallow angle with respect to the longitudinal axis of the fiber to cause the light to travel through the coating in a direction substantially parallel to the axis of the optical fiber for some distance before exiting the coating. By placing the detector a preselected distance from the coupling point, detection of light reflected from the fiber at the coupling spot is avoided and only light reflected by defects contained in the primary or secondary coating layers, or light reflected by delaminations between the primary coating layer and the fiber, will be detected by the detector.