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:
May. 02, 2006
Filed:
Aug. 07, 2001
Applicants:
Grant Moulton, Santa Rosa, CA (US);
Alain Houle, Petaluma, CA (US);
Inventors:
Grant Moulton, Santa Rosa, CA (US);
Alain Houle, Petaluma, CA (US);
Assignee:
Cisco Technology, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 14/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
Highly efficient control of laser frequency is provided. An optical channel monitor is coupled to a composite WDM signal resulting from the multiplexing of outputs from multiple laser sources. The monitor determines the frequency of each laser and this measurement is used to provide feedback for laser frequency control. In this way a single optical channel monitor can provide frequency control for numerous WDM channels, greatly reducing the cost and space required. Monitoring capability may be provided to individual channels as needed.