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:
Jun. 18, 2019
Filed:
Apr. 20, 2017
Ohio State Innovation Foundation, Columbus, OH (US);
David Rabb, Wright-Patterson Air Force Base, OH (US);
Betty Lise Anderson, Gahanna, OH (US);
OHIO STATE INNOVATION FOUNDATION, Columbus, OH (US);
Abstract
Disclosed herein are various improvements in optical switching engines. In one aspect, a range of switching engines includes various multiple bounce, multiple image devices, such as, for example, the Herriott Cell and the Robert Cell. In another aspect, liquid crystal spatial light modulators (SLMs) are used in the switching engine of an optical cross-connect. In another aspect, polarization gratings (PGs) are used in the switching engine. In another aspect, a switching engine includes a Fourier cell using SLMs with more than two states. Alternative imaging optics in a Fourier cell implementing a multiple-bounce, multiple image device are also disclosed.