Robert J Kimball

US Patent:

20040052526, Mar 18, 2004

Filed:

Sep 16, 2002

Appl. No.:

10/244928

Inventors:

Kevan Jones - Kanata, CA
Mark Wight - Ottawa, CA
Hock Lim - Green Brook NJ, US
Paul Beer - Nepean, CA
Clarence Kan - Bridgewater NJ, US
Aihua Yu - Ottawa, CA
Sheldon Walklin - Kanata, CA
Jingyu Zhou - Morganville NJ, US
Paul Chan - Ottawa, CA
David Whittaker - Nepean, CA
Kinh Pham - Nepean, CA
Robert Kimball - Lanoka Harbor NJ, US
Christian Scheerer - Ottawa, CA
Alan Solheim - Stittsville, CA

International Classification:

H04J014/02

US Classification:

398/050000, 398/195000

Abstract:

An agile network is provided with a layered control system for maintaining a network-wide target performance parameter (e.g. power) along all end-to-end connections. A connection is controlled at the physical layer using optical control loops that have a concatenated response based on a set of loop time constants. The network is separated into gain based span loops and power based switch loops; each link has a gain profile, and requires a per-wavelength power target as the output power target for the switch loop at the start of the link. Use of achievable gain for the span loops allow to optimize the performance of the link. Use of individual achievable power targets allows each switch loop to autonomously ramp on and off channels without causing interference with existing and other ramping channels. A loop control uses a model-based rules block, to distribute control signals to an optical section encompassing a plurality of optical components. Results from a set of tests performed during link commissioning are used as parameters for the expert system. After examining the current status of the entire optical section and collecting a set of measurements, the rules block determines the best way to achieve the target, whilst maximizing performance. Use of an embedded expert system enables to perform accurate real time performance estimation. Use of a model for all optical sections allows a level of abstraction at the loop boundaries, such that changes can be made independently. A device template is used for all optical devices in the network. The template defines the control and monitoring points for the respective device and specifies the type, range, and points to the device constants. With each iteration, the model and the current optical path measurements are used to adjust the optical path settings and update the model.

US Patent:

50919881, Feb 25, 1992

Filed:

Apr 12, 1991

Appl. No.:

7/684129

Inventors:

Yinon Degani - Highland Park NJ
Robert M. Kimball - Lanoka Harbor NJ
George J. Shevchuk - Old Bridge NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

G02B 636

US Classification:

385 70

Abstract:

An optical fiber connector pair is provided, which includes a plug assembly and a receptacle. An optical connection can be repeatedly made and broken by insertion and withdrawal, repectively, of the plug assembly relative to the receptacle. The final alignment of the mating fiber ends is provided by a pair of silicon blocks, each having a guiding groove formed in one surface. One block is included in the receptacle, and the other block is included in the plug assembly. One fiber end is affixed in each groove. The act of inserting the plug assembly in the receptacle brings the grooved surfaces together such that each fiber is captured by the opposing groove.

US Patent:

49731262, Nov 27, 1990

Filed:

Dec 7, 1989

Appl. No.:

7/447295

Inventors:

Yinon Degani - Highland Park NJ
Robert M. Kimball - Brick NJ
Richard T. Kraetsch - Berkeley Heights NJ
Robert M. Lien - Chester NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

G02B 638

US Classification:

350 9621

Abstract:

A fiber optical end connector is disclosed, comprising a grooved base member having mounted thereupon a grooved silicon block, and means for holding optical fibers in the grooves on the base member and on the silicon block.

US Patent:

51502461, Sep 22, 1992

Filed:

Aug 31, 1989

Appl. No.:

7/401354

Inventors:

Robert M. Kimball - Brick NJ
Thomas F. McIntosh - Dunwoody GA

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

H04B 1020

US Classification:

359118

Abstract:

A network ring topology includes a plurality of entry and exit interfaces (100,110) disposed in administrative locations such as in an equipment room (53) and in riser and satellite closets (51, 57), and at stations. Interconnections between ports of sets of ports of the interfaces are made in the closets by jumpers (120--120) and either in a direct or in an inverted manner, the direct being between corresponding ports of corresponding sets of ports in interfaces. Inverted connections are made between two exit or between two entry interfaces in which input and output ports of corresponding rings are connected by jumpers. The interfaces are color coded and may be either entry or exit type to denote the arrangement of the ports. The interfaces and the color coding arrangement allow a craftperson to make connections in an administrative location without having to follow signals through the ring. For a dual ring counter rotating network, each interface necessarily include two sets of ports.