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:
Jul. 28, 2026
Filed:
Mar. 22, 2024
Honeywell International Inc., Charlotte, NC (US);
Chellappan Narayanan, Phoenix, AZ (US);
Lee K. Strandjord, Tonka Bay, MN (US);
Matthew Wade Puckett, Phoenix, AZ (US);
Honeywell International Inc., Charlotte, NC (US);
Abstract
An optical filter twice filters an optical signal. The optical filter includes a first optical waveguide, an elliptical optical resonator, and a second optical waveguide. The optical signal is coupled from an input/output port of the optical filter which is a port of the first optical waveguide. A portion of the optical signal is coupled through and filtered by the elliptical optical resonator. The filtered optical signal is emitted from another port of the optical filter which is a port of the second optical waveguide. A reflector reflects the filtered optical signal back into the other port. The filtered optical signal is coupled through and filtered by the elliptical optical resonator to the input/output port. A twice filtered optical signal is emitted from the input/output port.