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. 23, 2023
Filed:
Feb. 21, 2019
8 Rivers Capital, Llc, Durham, NC (US);
William J. Brown, Durham, NC (US);
Hannah Clark, Durham, NC (US);
David Freed, Durham, NC (US);
Miles R. Palmer, Chapel Hill, NC (US);
8 Rivers Capital, LLC, Durham, NC (US);
Abstract
An optical receiver is provided for a diverged-beam, free space optical communications system. The optical receiver includes a demultiplexer and a detector array. The demultiplexer includes a diffractive optic configured to receive an optical beam propagating in free space. The optical beam includes a plurality of optical carrier signals of respective wavelengths for a plurality of communication channels, and the diffractive optic is configured to spatially separate the optical beam by wavelength into the plurality of optical carrier signals. The detector array includes a plurality of optical detectors configured to convert the plurality of optical carrier signals into a respective plurality of electrical signals for the plurality of communication channels. The plurality of optical detectors includes at least twice as many optical detectors as optical carrier signals in the plurality of optical carrier signals.