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:
Jul. 10, 2012
Filed:
Nov. 25, 2009
Osamu Kagaya, Tokyo, JP;
Satoshi Motohiro, Yokohama, JP;
Masahiro Hirai, Yokohama, JP;
Opnext Japan, Inc., Yokohama-shi, JP;
Abstract
Provided are an optical transmitter device and an optical transmitter module which are capable of reducing the optical transmitter module size while maintaining a state where an excellent optical transmission waveform quality is obtained over a wide range of frequencies. The optical transmission module () includes a semiconductor laser diode device (), an optical modulator device (), and a first termination resistor circuit (-). A printed circuit board () includes a driver IC () and a second termination resistor circuit (-). A lower cutoff frequency of the first termination resistor circuit (-) and an upper cutoff frequency of the second termination resistor circuit (-) correspond to each other. An impedance of the first termination resistor circuit (-) in a pass frequency band thereof and an impedance of the second termination resistor circuit (-) in a pass frequency band thereof correspond to each other.