Karl E May

US Patent:

20110206203, Aug 25, 2011

Filed:

Feb 21, 2011

Appl. No.:

13/031594

Inventors:

Pavan Voruganti - San Jose CA, US
Karl May - Menlo Park CA, US

Assignee:

VELLO SYSTEMS, INC. - Menlo Park CA

International Classification:

H04K 1/00

US Classification:

380256

Abstract:

The present invention includes various novel techniques, apparatus, and systems for optical WDM communications that involve dynamically modifying certain aspects of the WDM transmission (and corresponding receive) process at the optical (physical) layer to significantly enhance data/network security. These various dynamic modifications can be employed individually or in combination to provide even greater security depending upon the desired application and design tradeoffs. WDM transmission steps typically include encoding the client signals, mapping them to one or more subchannels within or across ITU channels, modulating them onto subcarrier frequencies, and multiplexing them together for optical transmission. By dynamically modifying one or more of these processing steps over time (in addition to any encryption of the underlying client signals), the current invention provides additional security at the physical (optical) layer of an optical network and thus greatly enhances overall network security.

US Patent:

20140193154, Jul 10, 2014

Filed:

Dec 30, 2013

Appl. No.:

14/143726

Inventors:

- Menlo Park CA, US
Scott Walker - Holywood, IE
Alan McKee - County Antrim, IE
Karl May - Menlo Park CA, US
Piotr Myslinski - Fremont CA, US
Richard King - San Jose CA, US

International Classification:

H04J 14/02

US Classification:

398 79

Abstract:

The present invention includes various novel systems and methods for dynamically modifying WDM transmission and receive steps (individually or in combination), including encoding client signals, mapping them to subchannels within or across ITU channels, modulating them onto subcarrier frequencies, and multiplexing them together for optical transmission. By dynamically modifying one or more of these processing steps over time (as well as encrypting underlying client signals), additional security is provided at the physical (optical) layer of an optical network, thereby greatly enhancing overall network security. Tunable lasers are employed to generate respective subcarrier frequencies, which represent subchannels of an ITU channel to which client signals are mapped. Client circuits are divided and combined with one another before being mapped to individual subchannels within and across ITU channels, thereby facilitating desired optical routing, switching, concatenation and protection of the client circuits mapped to those subchannels across the nodes of a WDM network.

Author:

Karl Friedrich May

ISBN #:

0816492905

Author:

Karl Friedrich May

ISBN #:

0816493065

Author:

Karl Friedrich May

ISBN #:

0816493162

Author:

Karl Friedrich May

ISBN #:

0816493618

Author:

Karl Friedrich May

ISBN #:

0816493634

Author:

Karl Friedrich May

ISBN #:

0826401740

Author:

Karl Friedrich May

ISBN #:

0826418481

Author:

Karl Friedrich May

ISBN #:

0854350411