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:
Oct. 13, 2004
Hidenori Takahashi, Kamifukukoka, JP;
Ryo Inohara, Kamifukuoka, JP;
Kosuke Nishimura, Kamifukuoka, JP;
Masashi Usami, Kamifukuoka, JP;
Hidenori Takahashi, Kamifukukoka, JP;
Ryo Inohara, Kamifukuoka, JP;
Kosuke Nishimura, Kamifukuoka, JP;
Masashi Usami, Kamifukuoka, JP;
KDDI Corporation, Tokyo, JP;
Abstract
A chromatic dispersion device according to the invention comprises an input/output waveguide, a plurality of first ring waveguides and a second ring waveguide. The plurality of first ring waveguides optically couple with the input/output waveguide through directional coupling and are disposed along an optical axis direction of the input/output waveguide, each ring waveguide having a predetermined FSR (free spectral range) and group delay characteristics with a peak value of the same polarity. The second ring waveguide optically couples with the input/output waveguide through directional coupling, the second ring waveguide having the predetermined FSR and group delay characteristics with a peak value of a polarity different from those of the first ring waveguides.