John M Wachsman

US Patent:

6614583, Sep 2, 2003

Filed:

Apr 5, 2001

Appl. No.:

09/826627

Inventors:

John M. Wachsman - Dublin CA

Assignee:

Genoa Corporation - Fremont CA

International Classification:

G02F 202

US Classification:

359326, 359124, 359135, 359140

Abstract:

A method and system for introducing optical delay. Using a tunable laser in combination with a group velocity dispersive element, laser tuning is used to create the desired amount of optical delay.

US Patent:

6829405, Dec 7, 2004

Filed:

Mar 11, 2002

Appl. No.:

10/095539

Inventors:

John M. Wachsman - Dublin CA
Jeffrey D. Walker - El Cerrito CA

Assignee:

Finisar Corporation - Sunnyvale CA

International Classification:

G02B 628

US Classification:

385 24, 385 17

Abstract:

An optical add drop multiplexer (OADM) comprised of a plurality of lasing semiconductor optical amplifiers for performing the switching of optical signals from various inputs to outputs in the switching fabric of the OADM.

US Patent:

7130500, Oct 31, 2006

Filed:

Aug 26, 2004

Appl. No.:

10/926809

Inventors:

John M. Wachsman - Delray Beach FL, US
Jeffrey D. Walker - El Cerrito CA, US

Assignee:

Finisar Corporation - Sunnyvale CA

International Classification:

G02B 6/35

US Classification:

385 17, 385 24

Abstract:

An optical multiplexer is provided that includes a reconfigurable switching fabric with a number of inputs and outputs. In addition, the reconfigurable switching fabric employs VLSOAs that facilitate at least partial reconfiguration of the switching fabric by serving as switches to add, drop or pass-through one or more optical signals received at the inputs of the reconfigurable switching fabric. In some cases, one or more of the VLSOAs also serve to amplify one or more optical signals so as to compensate for losses that may be experienced by the signal in transit through the switching fabric, or elsewhere. Finally, this example of the optical multiplexer includes a wavelength division multiplexer coupled to the reconfigurable switching fabric and configured to multiplex at least some of the optical signals received from outputs of the reconfigurable switching fabric.

US Patent:

7174100, Feb 6, 2007

Filed:

Apr 2, 2001

Appl. No.:

09/824360

Inventors:

John M. Wachsman - Dublin CA, US

Assignee:

Finisar Corporation - Sunnyvale CA

International Classification:

H04J 14/00

US Classification:

398 47, 398 75, 398147

Abstract:

A method and system for performing OTDM. Laser wavelength tuning is used to create appropriate time differentials between bits in a combined optical output data stream.

US Patent:

D436824, Jan 5, 1999

Filed:

Feb 11, 1997

Appl. No.:

D/066558

Inventors:

Todd G. Brehmer - San Jose CA
John M. Wachsman - Pleasanton CA

Assignee:

Pacific Monolithics, Inc. - Sunnyvale CA

International Classification:

1403

US Classification:

D14230

US Patent:

D3632881, Oct 17, 1995

Filed:

Oct 8, 1993

Appl. No.:

D/014008

Inventors:

Todd G. Brehmer - San Jose CA
Albert W. Berg - Newark CA
Allen F. Podell - Palo Alto CA
John M. Wachsman - Pleasanton CA
Laurence M. Markowitz - late of Menlo Park CA

Assignee:

Pacific Monolithics, Inc. - Sunnyvale CA

US Classification:

D14230