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:
May. 21, 2002
Filed:
Jun. 22, 2000
Applicant:
Inventors:
Assignee:
The Furukawa Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/12 ;
U.S. Cl.
CPC ...
G02B 6/12 ;
Abstract
An optical multiplexer/demultiplexer having a plurality of first waveguides a first slab waveguide an arrayed waveguide grating having a plurality of waveguides, a second slab waveguide and a plurality of second waveguides the individual waveguides being connected in the above order. The ratio of a distance between the plurality of first waveguides at a connecting portion with the first slab waveguide to a distance between the plurality of second waveguides at a connecting portion with the second slab waveguide differs from a ratio of a focal length of the first slab waveguide to a focal length of the second slab waveguide