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. 19, 2018
Filed:
Mar. 17, 2015
Politecnico Di Milano, Milan, IT;
Mario Martinelli, San Donato Milanese, IT;
POLITECNICO DI MILANO, Milan, IT;
Abstract
Described herein is a multiplexer/demultiplexer optical device () comprising: a first beam-splitter cube (BS); a second beam-splitter cube (BS) optically coupled to the first splitter (BS); a first Porro-prism reflector (PR), which is optically coupled to the second splitter (BS); and a second Porro-prism reflector (PR), which is optically coupled to the second splitter (BS) and is structured for introducing into optical beams that traverse it a phase delay depending upon an orbital angular momentum of the optical beams and upon an orientation of the second reflector. The device is a Michelson interferometer structured for obtaining constructive/destructive interference such as to multiplex/demultiplex on/from corresponding input/output ports, on the basis of values of orbital angular momentum, an optical beam comprising a plurality of concentric optical beams with cylindrical symmetry having different values of orbital angular momentum.