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. 18, 2011
Filed:
Sep. 23, 2008
Takashi Kounosu, Yokohama, JP;
Satoshi Yoshimura, Yokohama, JP;
Shin Satoh, Yokohama, JP;
Masaki Furumai, Yokohama, JP;
Takashi Kounosu, Yokohama, JP;
Satoshi Yoshimura, Yokohama, JP;
Shin Satoh, Yokohama, JP;
Masaki Furumai, Yokohama, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A method to produce an optical module, in particular, a module to transmit an analog data to enhance a yield thereof is disclosed. The method comprises (a) taking an I-L characteristic and its slope efficiency, (b) taking a gradient of a linear approximation between the slope efficiency and a current applied to an LD, and (c) taking an optimum current for the CSO characteristic as varying the current. Steps (a) to (c) give a correlation between the gradient of the linear approximation and the optimum current and are performed in advance to the practical production.