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:
Dec. 28, 2004
Filed:
Jan. 28, 2003
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/04 ; H01S 5/00 ;
U.S. Cl.
CPC ...
H01S 3/04 ; H01S 5/00 ;
Abstract
An LD module capable of generating a good optical waveform at a high speed of about 10 Gbit/s or higher in which a damping resistor is disposed in parallel with a laser-diode device in the inside of a laser-diode module, the damping resistor being preferably disposed between the connection point of the high-frequency transmission line and the terminating resistor, and the ground.