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:
Jul. 22, 2003
Filed:
Jan. 14, 2002
Benjamin B. Dingel, Painted Post, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
An optical device for receiving an optical signal of one or more wavelengths comprises an n-way optical coupler, where n is any integer ≧2, to split the optical signal by an intensity ratio into n branch signals. The device also comprises an arrayed waveguide grating, which includes a first optical slab having n input ports, where each branch signal is coupled to a different input port and a waveguide array structure including a plurality of waveguides. The waveguides have incrementally different path lengths. The device further comprises a second optical slab coupled to each of the plurality of waveguides of the waveguide array structure. In the second optical slab, the n branch signals are each demultiplexed. With this configuration, the demultiplexed signals of each branch signal do not substantially overlap with the demultiplexed signals of another branch signal at an output face of the second optical slab.