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:
Apr. 06, 2021
Filed:
Jul. 16, 2018
Government of the United States of America, As Represented BY the Secretary of the Navy, Arlington, VA (US);
Daniel V. Nickel, Prince Frederick, MD (US);
Bryan Haas, Arnold, MD (US);
Abstract
A microwave photonic filter is provided. The filter includes an optical source, an electro-optic modulator, a single mode optical fiber, a few-mode optical fiber, and a photodiode. The electro-optic modulator is configured to receive an optical carrier from the optical source and an input electrical signal. The electro-optic modulator modulates the optical carrier based on the input electrical signal. The single mode optical fiber is configured to receive the modulated optical carrier from the electro-optic modulator. The few-mode optical fiber is configured to receive the modulated optical carrier from the single mode optical fiber. The filter includes one of a plurality of methods for causing higher order mode excitation in the few-mode fiber. The photodiode is configured to receive an output from the few-mode optical fiber.