Kevin P Sweeney

US Patent:

7903980, Mar 8, 2011

Filed:

Jun 19, 2007

Appl. No.:

11/765152

Inventors:

Fernando X. Villarruel - Romeoville IL, US
Steven C. Condra - Plainfield IL, US
Yihong Chen - Naperville IL, US
Kevin L. Sweeney - Naperville IL, US
James W. Sulhoff - Naperville IL, US

International Classification:

H04B 10/04
H04B 10/12
H04J 14/02

US Classification:

398193, 398 90, 398201

Abstract:

Provided herein are embodiments of a device, method of use and system for a low-cost analog multi-wavelength video distribution transamplifier for CATV and FTTH networks having a broadband overlay. The transamplifier embodiments described herein allow the use of multiple wavelengths to segment logical service groups in a CATV distribution system and a FTTH system having a broadband overlay. Improved optical signal power performance can be achieved by using direct modulating transmitters and modulating the optical signal for with an external waveguide, thereby decreasing SBS and reducing non-linearities.

US Patent:

8111992, Feb 7, 2012

Filed:

Jun 19, 2007

Appl. No.:

11/765078

Inventors:

Fernando X. Villarruel - Romeoville IL, US
Steven C. Condra - Plainfield IL, US
Yihong Chen - Naperville IL, US
Kevin L. Sweeney - Naperville IL, US
James W. Sulhoff - Naperville IL, US

International Classification:

H04J 14/02

US Classification:

398 79, 398192

Abstract:

Provided herein are embodiments of a device, method of use and system for a low-cost analog multi-wavelength video distribution transamplifier for CATV and FTTH networks having a broadband overlay. The transamplifier embodiments described herein allow the use of multiple wavelengths to segment logical service groups in a CATV distribution system and a FTTH system having a broadband overlay.

US Patent:

8265490, Sep 11, 2012

Filed:

May 28, 2009

Appl. No.:

12/473736

Inventors:

Fernando X. Villarruel - Romeoville IL, US
Steven C. Condra - Plainfield IL, US
Yihong Chen - Naperville IL, US
Kevin L. Sweeney - Naperville IL, US
James W. Sulhoff - Naperville IL, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04B 10/04
H04B 10/12

US Classification:

398193, 398201

Abstract:

Disclosed herein are embodiments of a device, method of use and system for an analog multi-wavelength transamplifier. The transamplifier embodiments described herein allow the use of multiple wavelengths to segment logical service groups, such as for use in a CATV distribution system and a FTTH system having a broadband overlay. Improved optical signal power performance can be achieved by using direct modulating transmitters and maintaining polarization of the optical signals that are modulated by a phase modulator, such as an external waveguide.

US Patent:

47969750, Jan 10, 1989

Filed:

May 14, 1987

Appl. No.:

7/050254

Inventors:

Gregory J. Lukas - Lisle IL
Kevin L. Sweeney - Wheaton IL
Michael R. Keur - Niles IL

Assignee:

Amphenol Corporation - Wallingford CT

International Classification:

G02B 600
B65H 6902

US Classification:

350320

Abstract:

A method of aligning and attaching optical fibers to substrate optical waveguides is disclosed. In accordance with the method, one or more slabs of preferentially etchable material and a waveguide substrate are placed adjacent each other face down on a flat surface for aligning the tops of the slabs with the top of the waveguide. A backing plate is secured to the back surface to hold the entire assembly together. The preferentially etchable material is thereafter etched to form v-grooves in alignment with the light guiding region of the waveguide substrate. Thereafter, optical fibers are secured thereto in an optically aligned manner with the light guiding region. In another aspect, the invention is directed to a fiber pigtailed waveguide substrate manufactured in accordance with the method.

US Patent:

62788167, Aug 21, 2001

Filed:

Mar 30, 2000

Appl. No.:

9/539632

Inventors:

Michael R. Keur - Des Plaines IL
James H. Fisher - Batavia IL
Douglas W. Anthon - Wheaton IL
Kevin L. Sweeney - Naperville IL

Assignee:

Scientific-Atlanta, Inc. - Lawrenceville GA

International Classification:

G02B 626

US Classification:

385 29

Abstract:

Systems and methods for suppressing cladding modes at the signal wavelength in an optical fiber system utilizing an optical amplifier without perturbing the pump wavelength. An outer cladding of the gain fiber is removed providing a short section of a single mode fiber that does not guide the higher order modes, thus attenuating the higher order modes. Therefore, this system eliminates unwanted noise. In an embodiment, the modes are filtered at the end of the gain section of the optical fiber before splicing to an input fiber. Hydro florate etching can be utilized to remove the outer cladding. The resulting fiber maintains fundamental mode propagation and no mode mixing occurs while losing the higher order modes eliminating the noise.

Author:

Kevin Sweeney

ISBN #:

0313265712

Author:

Kevin Sweeney

ISBN #:

0313284962

Author:

Kevin Sweeney

ISBN #:

0595171869

Author:

Kevin J. Sweeney

ISBN #:

0060511923

Author:

Kevin J. Sweeney

ISBN #:

0060597232