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:
Feb. 09, 2010
Filed:
Nov. 06, 2007
Tsutomu Niiho, Osaka, JP;
Kouichi Masuda, Osaka, JP;
Masaru Fuse, Osaka, JP;
Fumio Fujisaki, Kanagawa, JP;
Kuniharu Itakura, Kanagawa, JP;
Tomoaki Ohira, Osaka, JP;
Tsutomu Niiho, Osaka, JP;
Kouichi Masuda, Osaka, JP;
Masaru Fuse, Osaka, JP;
Fumio Fujisaki, Kanagawa, JP;
Kuniharu Itakura, Kanagawa, JP;
Tomoaki Ohira, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An optical modulator comprises an electrodewhich applies to an optical waveguidesof a Mach-Zehnder type optical interference system a first electric signal based on an alternating current signal Sand a direct current bias V, an electrodewhich applies to an optical waveguideof the Mach-Zehnder type optical interference system a second electric signal based on an alternating current signal Sand a direct current bias V, and a bias setting sectionwhich sets average direct current levels of the first and second electric signals based on signal frequency information Dwhich indicates a magnitude relation between a maximum frequency of the alternating current signal Sand a maximum frequency of the alternating current signal S