David C Huber

US Patent:

6449073, Sep 10, 2002

Filed:

Jul 21, 1998

Appl. No.:

09/119562

Inventors:

David R. Huber - Glenwood MD

Assignee:

Corvis Corporation - Columbia MD

International Classification:

H04J 1400

US Classification:

359128, 359117, 359127, 359130, 359124, 359134, 359139, 385 16

Abstract:

Apparatuses and methods are disclosed for use in optical communication systems. An optical system of the present invention includes an optical transmitter, an optical receiver, and an optical processing node optically connecting the transmitter and the receiver. The optical processing node includes at least one waveband selector configured to selectively pass at least one optical waveband of information including a plurality of information carrying wavelengths from the transmitter to the receiver. In an embodiment, the optical processing node includes a switch configured to separate an optical signal into optical wavebands of information and selectively pass the optical wavebands to the receiver without separating the plurality of information carrying wavelengths into individual wavelengths. In an embodiment of the optical transmission system, a plurality of nodes containing optical transmitters, receivers, and/or switching equipment are interconnected using optical processing nodes to form the network. The assignment of wavelengths to information and to destination can be performed at the client system interface with the optical network to provide for wavelength and waveband management without wavelength conversion.

US Patent:

6661973, Dec 9, 2003

Filed:

Jun 4, 1999

Appl. No.:

09/326748

Inventors:

David R. Huber - Glenwood MD 21046-9400
Alistair J. Price - Columbia MD 21046-9400

International Classification:

H04J 1402

US Classification:

398 91, 398 76, 398141, 398163

Abstract:

An optical transmission system of the present invention includes at least one transmitter configured to receive information from a plurality of optical receivers and transmit the information in a plurality of information carrying optical signal wavelengths. At least one optical receiver is configured to receive a plurality of information carrying optical signal wavelengths and a local oscillator signal. The optical receiver converts a plurality of optical signal wavelengths into a corresponding number of electrical signal frequencies. The optical systems reduce the number of transmitters and receivers required interconnecting various optical systems, as well as providing multiple wavelength regenerators and converters and add/drop devices with increased capacity and system flexibility.

US Patent:

7130540, Oct 31, 2006

Filed:

Feb 22, 2002

Appl. No.:

10/090015

Inventors:

Jane M. Simmons - Columbia MD, US
David R. Huber - Glenwood MD, US

Assignee:

Corvis Corporation - Columbia MD

International Classification:

H04J 14/00
H04J 14/02

US Classification:

398 49, 398 45, 398 50, 398 56, 398 79, 398 83

Abstract:

Optical systems and devices for processing spectral groups, and optical methods for forming spectral groups, the optical system including at least one sub-network including at least one spectral group router configurable to route a plurality of optical signal channels within a spectral group, when contained within said sub-network and terminate optical channels within a spectral group, when bounding said sub-network, each optical signal channel being transmitted from one node within said sub-network to another node in said sub-network.

US Patent:

20020114030, Aug 22, 2002

Filed:

Feb 8, 2002

Appl. No.:

10/071030

Inventors:

Anarug Dwivedi - Ellicott City MD, US
Harrison Roberts - Columbia MD, US
David Huber - Glenwood MD, US

Assignee:

Corvis Corporation

International Classification:

H04B010/20
H04J014/00
H04B010/00

US Classification:

359/118000, 359/154000

Abstract:

A transmission system, including a content server, an optical transmitter having an input connected to the content server and having an output for producing optical signals indicative of content on the server, an optical switching device for selectively multi-casting optical signals, and a plurality of optical receivers connected to the switching device and receiving multicast optical signals. The optical switching device may further include an optical duplicator having an input connected to the output of the transmitter and having a plurality of outputs, and a plurality of separately controllable optical switching elements connected to the outputs of the optical duplicator.

US Patent:

55328644, Jul 2, 1996

Filed:

Jun 1, 1995

Appl. No.:

8/457292

Inventors:

Stephen B. Alexander - Millersville MD
Steve W. Chaddick - Annapolis MD
David R. Huber - Annapolis MD

Assignee:

Ciena Corporation - Columbia MD

International Classification:

H04B 1002
H01S 300

US Classification:

359177

Abstract:

The present invention provides a wavelength division multiplexed optical communication system which includes an optical monitoring channel which is capable of surviving the failure of an optical amplifier. The optical communication system comprises a plurality of optical transmitters which optically communicate with an optical waveguide which carries the multiplexed optical transmission signal. At least one multiple-stage optical amplifier having at least first and second stages is positioned along said optical waveguide. The optical amplifier includes a first and second stages comprising doped fibers having a first gain wavelength band. An optical connecting element having a plurality of ports is positioned between the first and second stages. At least one of an optical monitoring signal transmitter and an optical monitoring signal receiver optical communicates with at least one port of the optical connecting element such that the optical monitoring signal passes through at least one of the first and second stages of the optical amplifier. The optical monitoring signal wavelength is selected to be greater than the longest wavelength of the first gain wavelength band such that the optical monitoring signal is not substantially attenuated by an unpumped optical amplifier.

US Patent:

57267847, Mar 10, 1998

Filed:

Mar 29, 1996

Appl. No.:

8/624269

Inventors:

Stephen B. Alexander - Millersville MD
Steve W. Chaddick - Annapolis MD
David R. Huber - Glenwood MD
Cecil D. Smith - Severna Park MD

Assignee:

Ciena Corp. - Linthicum MD

International Classification:

H04J 1402

US Classification:

359125

Abstract:

A WDM optical communication system is described which is capable of placing information from incoming information-bearing optical signals onto N optical signal channels for conveyance over an optical waveguide. The optical system includes a first set of one or more optical transmitters, each of which emits an information-bearing optical signal at one or more transmission wavelengths,. lambda. sub. Ti. At least M optical receiving systems are provided, each receiving system configured to receive an information-bearing optical signal at a particular reception wavelength. lambda. sub. j, where M is a whole number greater than or equal to N and j is from 1 to M. Each receiving system includes at least one Bragg grating member for selecting the particular reception wavelength. lambda. sub. j. An optical waveguide optically communicates with each of the M receiving systems for transmitting a plurality of optical signals. A plurality of optical remodulators is further included for communicating with the first set of optical transmitters and the optical waveguide.

US Patent:

58255206, Oct 20, 1998

Filed:

Aug 11, 1995

Appl. No.:

8/514422

Inventors:

David R. Huber - Annapolis MD

International Classification:

H04J 1402

US Classification:

359130

Abstract:

The present invention provides an optical demultiplexer for demultiplexing an input signal containing a group of optical signals each at a different wavelength into at least two optical signals. The demultiplexer comprises a first optical transfer system comprising an optical circulator having at least three circulator ports for circulating optical signals from one port to the next port in a circulating direction. An input signal containing a group of optical signals is coupled to each at a different wavelength to a first of the circulator ports. A second circulator port optical path is coupled to the second circulator port, the second circulator port being the next circulator port in the circulating direction from the first circulator port. The second circulator port optical path includes a grating reflector for reflecting one of the group of optical signals back to the second circulator port. The reflected optical signal is circulated from the second circulator port to the third circulator port which is the next port in the circulating direction from the second circulator port while the unreflected optical signals from the group of optical signals passes through the grating reflector and continuing on the second circulator port optical path.

US Patent:

55046096, Apr 2, 1996

Filed:

May 11, 1995

Appl. No.:

8/438844

Inventors:

Stephen B. Alexander - Millersville MD
Steve W. Chaddick - Annapolis MD
David R. Huber - Annapolis MD
Cecil D. Smith - Severna Park MD

Assignee:

Ciena Corporation - Columbia MD

International Classification:

H04J 1402

US Classification:

359125

Abstract:

The present invention provides an optical communication system capable of placing incoming information-bearing optical signals onto plural optical signal channels for transmission over an optical waveguide. The optical system includes plural optical transmission elements, each transmission element emitting an information-bearing optical signal at a first transmission wavelength. Plural optical receiving systems are provided, each receiving system configured to receive an information-bearing optical signal at a particular reception wavelength. Each receiving system includes an optical filtering member comprising at least one Bragg grating member for selecting the particular reception wavelength. An optical waveguide optically communicates with each of the receiving systems for transmitting a plurality of optical signals. A plurality of optical amplifiers are positioned along the optical waveguide for amplifying plural optical signals simultaneously.