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, 2015
Filed:
Dec. 07, 2012
Applicant:
Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;
Inventors:
Chie Fukuda, Yokohama, JP;
Toshimitsu Kaneko, Yokohama, JP;
Lance Thompson, San Jose, CA (US);
Phillip Edwards, San Jose, CA (US);
Assignee:
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/10 (2006.01); H01S 3/13 (2006.01); H01S 5/022 (2006.01); H01S 5/0625 (2006.01); H01S 5/0687 (2006.01); H01S 5/042 (2006.01); H01S 5/12 (2006.01);
U.S. Cl.
CPC ...
H01S 3/13 (2013.01); H01S 5/02248 (2013.01); H01S 5/0425 (2013.01); H01S 5/06256 (2013.01); H01S 5/0687 (2013.01); H01S 5/1209 (2013.01); H01S 5/1212 (2013.01);
Abstract
A wavelength monitor monolithically integrated with a tunable LD is disclosed. The wavelength monitor includes at least two filters, each filter having a different periodic transmission spectrum. A transmittance of the first filter, and another transmittance of the second filter at a grid wavelength attributed to a WDM system forms a combination which is specific to the grid wavelength but different from other combinations at other grid wavelengths.