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:
Nov. 09, 2004
Filed:
Nov. 10, 2003
Applicant:
Inventors:
Kazuhisa Kashihara, Chiyoda-ku, JP;
Kazutaka Nara, Chiyoda-ku, JP;
Assignee:
The Furukawa Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/34 ;
U.S. Cl.
CPC ...
G02B 6/34 ;
Abstract
An arrayed waveguide grating optical multiplexer/demultiplexer is configured to multiplex a plurality of lights having different wavelengths with a designed wavelength spacing and to demultiplex a light into a plurality of lights having different wavelengths with the designed wavelength spacing. The designed wavelength spacing is determined such that a value which is obtained by multiplying the designed wavelength spacing by an integer which is at least two is substantially equal to an actual wavelength spacing of lights which are input to or output from the multiplexer/demultiplexer.