Steven R Shepherd

US Patent:

6754174, Jun 22, 2004

Filed:

Sep 15, 2000

Appl. No.:

09/662697

Inventors:

Raanan Ben-Zur - Campbell CA
Steven L. Shepherd - Monte Sereno CA
Boris Reynov - Cupertino CA
Bayne G. Steele - Pleasanton CA
Nicholas A. Balatoni - Santa Clara CA

Assignee:

Ciena Corporation - Linthicum MD

International Classification:

H04L 2154

US Classification:

370225, 370466

Abstract:

An interface for communications among network elements of at least one network is provided, comprising at least one transmitter, at least one receiver, at least one processor, and at least one backplane coupled among the network elements. Data frames of a second type, or Time Slot Network (TS Net) data frames, are generated and transferred over the backplane in response to receipt data frames of a first type from the network. The TS Net data frames comprise switching event information. Compare operations are performed among prespecified TS Net data frames at prespecified intervals, and at least one interrupt signal is generated in response to data changes determined by the compare operations. Information routing is controlled over the network by a processor in response to the interrupt signal.

US Patent:

6826327, Nov 30, 2004

Filed:

Dec 18, 2001

Appl. No.:

10/024905

Inventors:

Chang-Hee Lee - Taejon, KR
Wayne V. Sorin - Mountain View CA
Steven L. Shepherd - Monte Sereno CA

Assignee:

Novera Optics, Inc. - Palo Alto CA

International Classification:

G02B 626

US Classification:

385 28, 385 29, 385 7

Abstract:

A method, an apparatus and a system are described for receiving an optical signal in an optical filter and routing the optical signal through the optical filter multiple times.

US Patent:

6865148, Mar 8, 2005

Filed:

Sep 15, 2000

Appl. No.:

09/663512

Inventors:

Raanan Ben-Zur - Campbell CA, US
Steven L. Shepherd - Monte Sereno CA, US
Boris Reynov - Cupertino CA, US
Bayne G. Steele - Pleasanton CA, US
Nicholas A. Balatoni - Santa Clara CA, US

Assignee:

Ciena Corporation - Linthicum MD

International Classification:

G01R031/08

US Classification:

370218, 370540

Abstract:

A method for routing network switching information includes generating at one Time Slot Network (TS Net) data firame from at least one data frame of a first type. The TS Net data frame comprises switching event information. The TS Net data frame is transferred and stored among a number of network elements using a backplane network. Compare operations are performed among prespecified data frames of the TS Net data frame, and at least one interrupt signal is generated in response to detected changes resulting from the compare operations. Information routing is controlled in at least one network and the associated network elements in response to the interrupt signals.

US Patent:

20020003915, Jan 10, 2002

Filed:

Dec 4, 2000

Appl. No.:

09/729661

Inventors:

Wayne Sorin - Mountain View CA, US
Pavel Polynkin - Fremont CA, US
Steven Shepherd - Monte Sereno CA, US

International Classification:

G02F001/335
G02B006/26

US Classification:

385/007000, 385/028000

Abstract:

An acousto-optic filter includes an optical fiber with a first region and a second region. A first acoustic wave generator is coupled to optical fiber. The first acoustic wave generator produces a first acoustic wave that travels in a first direction in the first region. A backward-propagating wave is generated in response to propagation of the first acoustic wave along the optical fiber. The backward-propagating wave travels in an opposite direction relative to the first acoustic wave. A first acoustic wave propagation member is coupled to the optical fiber. A second acoustic wave generator is coupled to the optical fiber at the second region. The second acoustic wave generator produces a second acoustic wave that combines with the backward propagating acoustic wave.