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:
Jun. 08, 2010
Filed:
Jul. 23, 2007
Tomoaki Ohira, Osaka, JP;
Kouichi Masuda, Osaka, JP;
Masaru Fuse, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An optical SSB-SC modulation sectionsubjects an optical signal fa outputted from an optical sourceto an optical SSB-SC modulation based on the amplitude of an external electric signal fc to thereby output an optical intensity-modulated signal. An optical phase modulation sectionsubjects the optical signal fa to an optical phase modulation based on the amplitude levels of the first to nexternal electric signals having frequencies fto fn to thereby output the resultant signal as an optical phase-modulated signal. An optical combining sectioncombines together the optical intensity-modulated signal and the optical phase-modulated signal. An optical detecting sectionperforms an optical homodyne detection through a squared detection of the optical intensity-modulated signal and the optical phase-modulated signal combined together to thereby produce a wideband modulated signal, being the difference beat signal between the two optical signals. A combining sectioncombines together the wideband modulated signal and the oto telectric signals having frequencies fo to ft to thereby output the resultant signal as a wideband modulated signal.