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:
Feb. 09, 2016
Filed:
Oct. 27, 2014
Applicant:
Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;
Inventor:
Hirotaka Oomori, Yokohama, JP;
Assignee:
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/00 (2013.01); H04B 10/50 (2013.01); H04B 10/564 (2013.01); H04J 14/00 (2006.01);
U.S. Cl.
CPC ...
H04B 10/503 (2013.01); H04B 10/564 (2013.01);
Abstract
An algorithm to reduce a peak current for a transmitter module with multiple laser diodes (LDs) is disclosed. When the current temperature of the LDs is higher than the target temperature, the thermo-electric cooler (TEC) controller is first activated then the LD driver to drive the LDs is subsequently activated with a substantial delay. When the ambient temperature of the LDs is lower than the target temperature, the LD driver is first driven; then, the TEC controller is subsequently activated.