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. 26, 2013
Filed:
Feb. 20, 2010
Corrado Pietro Dragone, Little Silver, NJ (US);
Corrado Pietro Dragone, Little Silver, NJ (US);
Other;
Abstract
A planar optical router consisting of two stages performing stationary imaging has advantages of reduced size, increased number of channels and reduced crosstalk. In one embodiment, each stage of the router includes a waveguide grating, and the router produces several sets of interleaved images, with the property that different sets are characterized by different diffraction orders of the two gratings. The new arrangement substantially increases the number of output waveguides, as compared to previous arrangements using only one set of images, characterized by the same order of the output stage. Moreover, since adjacent sets are characterized by different orders, crosstalk is substantially reduced. In a second embodiment, the number of output waveguides is further increased by including two gratings in the second stage.