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:
Oct. 31, 2000
Filed:
Jan. 26, 1998
Applicant:
Inventors:
Loudon T Blair, Annapolis, MD (US);
Steven W Cornelius, Lilburn, GA (US);
Steffen Koehler, Annapolis, MD (US);
Kevin Meagher, Bowie, MD (US);
Victor Mizrahi, Columbia, MD (US);
Assignee:
CIENA Corporation, Linthicum, MD (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
359110 ; 359124 ; 359119 ; 359152 ; 385 24 ;
Abstract
A method for monitoring a plurality of components associated with a communications network node. A diagnostic service signal is generated at an intra-node component and transmitted along a first optical path to another intra-node component where the presence or absence of the signal is detected. In this manner, optical paths defined between intra-nodal components can be monitored using a diagnostic service signal.