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. 04, 2005
Filed:
Sep. 28, 2001
Applicant:
Rohit Mittal, Sunnyvale, CA (US);
Inventor:
Rohit Mittal, Sunnyvale, CA (US);
Assignee:
Ciena Corporation, Linthicum, MD (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B010/08 ; H04B017/00 ;
U.S. Cl.
CPC ...
Abstract
An apparatus and method for measuring optical signal to noise ratio (OSNR) in a node of an optical data network is disclosed. A peak power level and an average power level are measured for an optical input to an optical detector. The OSNR is determined by selecting an OSNR having the peak power level and the average power level associated with an optical signal traversing an optical path having attenuation and optical amplifier noise.