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:
Oct. 28, 2025
Filed:
Jun. 14, 2022
Oxford University Innovation Limited, Oxford, GB;
OXFORD UNIVERSITY INNOVATION LIMITED, Oxford, GB;
Abstract
A photonic content addressable memory (CAM) () is provided. The photonic CAM () comprises: N search lines () and a plurality of match lines (), each match line comprising N photonic CAM cells (). Each search line () is configured to receive a search optical signal and each search optical signal comprises a different wavelength encoding one of N parallel search symbols. Each match line () is configured to receive: a wavelength division multiplexed content optical signal comprising a plurality of wavelengths, each wavelength encoding one of N parallel content symbols; and the N search optical signals from the N search lines (). Each photonic CAM cell is configured to compare a respective search symbol with a respective content symbol and provide an output optical signal that is responsive to the comparison. Each match line () also comprises a content optical demultiplexer (), configured to demultiplex the wavelength division multiplexed content optical signal and provide each CAM cell () with the respective content symbol.