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:
Apr. 25, 2006
Filed:
Mar. 06, 2003
Tomokazu Tanaka, Yokohama, JP;
Cleitus Antony, Yokohama, JP;
Hiroo Matsue, Yokohama, JP;
Hideki Murakawa, Yokohama, JP;
Tadashi Hatano, Yokohama, JP;
Tomokazu Tanaka, Yokohama, JP;
Cleitus Antony, Yokohama, JP;
Hiroo Matsue, Yokohama, JP;
Hideki Murakawa, Yokohama, JP;
Tadashi Hatano, Yokohama, JP;
OpNext Japan, Inc., Yokohama, JP;
Abstract
The present invention provides an optical transmission module having a laser diode that generates laser beams and a differential type current switch provided with a first switch and a second switch in order to supply a modulating current to the laser diode. A terminal of the laser diode and the first switch are connected in series through a first transmission line and a first capacitor, the other terminal of the laser diode and the second switch are connected in series through a second transmission line and a second capacitor. The current driven by the second switch is terminated by a resistor connected to the first switch and the current driven by the first switch is terminated by a resistor connected to the second switch. Thus, the laser diode is modulated bidirectionally.