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:
Jan. 11, 2011
Filed:
Mar. 22, 2004
Yoshihiro Hashimoto, Tokyo, JP;
Kaoru Higuma, Tokyo, JP;
Junichiro Ichikawa, Tokyo, JP;
Shingo Mori, Tokyo, JP;
Yozo Shoji, Tokyo, JP;
Hiroyo Ogawa, Tokyo, JP;
Yoshihiro Hashimoto, Tokyo, JP;
Kaoru Higuma, Tokyo, JP;
Junichiro Ichikawa, Tokyo, JP;
Shingo Mori, Tokyo, JP;
Yozo Shoji, Tokyo, JP;
Hiroyo Ogawa, Tokyo, JP;
Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;
National Institute of Information and Communications Technology, Tokyo, JP;
Abstract
A method for generating a carrier residual signal and its device, in which a heterodyne optical signal used in a photometric field or an optical fiber radio communication field can be stably generated with a simplified structure. The device includes an optical modulating unit that includes a light source generating a light wave having a specific wavelength, and an SSB optical modulator. A light wave emitted from the light source enters into the optical modulating unit. A light wave emitted from the optical modulating unit includes a carrier component related to a zero-order Bessel function and a specific signal component related to a specific high-order Bessel function while suppressing signal components other than the specific signal component related to the specific high-order Bessel function, and a ratio of optical intensity between the carrier component and the specific signal component is set substantially to 1.