The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2009
Filed:
May. 15, 2008
Applicants:
Martin Birk, Belford, NJ (US);
Angela Lan Chiu, Holmdel, NJ (US);
John L. Strand, Holmdel, NJ (US);
Inventors:
Assignee:
AT&T Corp., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/26 (2006.01); H04B 10/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
An arrangement provides low cost path protection in an optical communications network. The arrangement has a portionthat provides (broadcasts) an outbound optical signal, and at least first and second transmitting portionstransmit the outbound optical signal simultaneously onto at least first and second respective mutually distinct optical pathways. Meanwhile, a selection arrangementselects among plural incoming optical signals (via) according to a SELECT control signalto provide a selected signal, and an analyzeranalyzes characteristics of the selected signal to provide the SELECT control signal