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:
Nov. 29, 2011
Filed:
Sep. 13, 2010
Robert W. Herrick, San Jose, CA (US);
Charles B. Roxlo, Saratoga, CA (US);
T. H. Ola Sjolund, Morgan Hill, CA (US);
Tsurugi Sudo, San Jose, CA (US);
Robert W. Herrick, San Jose, CA (US);
Charles B. Roxlo, Saratoga, CA (US);
T. H. Ola Sjolund, Morgan Hill, CA (US);
Tsurugi Sudo, San Jose, CA (US);
Finisar Corporation, Sunnyvale, CA (US);
Abstract
Semiconductor lasers are aged to identify weak or flawed devices, resulting in improved reliability of the remaining devices. The lasers can be aged using a high-power optical burn-in that includes providing a high drive current to the lasers for a period of time, and maintaining the ambient temperature of the lasers at a low temperature. After the high-power optical burn-in, the output of the lasers can be measured to determine if the lasers are operating within specifications. Those that are not can be discarded, while those that are can be further aged using a high-temperature thermal burn-in that includes providing a drive current to the lasers while maintaining the ambient temperature of the lasers at a high-temperature.