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:
Jan. 07, 2025
Filed:
Feb. 23, 2021
Massachusetts Institute of Technology, Cambridge, MA (US);
Juejun Hu, Newton, MA (US);
Tian Gu, Fairfax, VA (US);
Yifei Zhang, Cambridge, MA (US);
Carlos Andres Rios Ocampo, Somerville, MA (US);
Mikhail Shalaginov, Somerville, MA (US);
Xiaoming Qiu, Somerville, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
Reversible phase-change materials (PCMs) can be added to or incorporated into meta-lenses, wave plates, waveguides, gratings, and other optical components to form active optical devices with controllable and adjustable optical characteristics. Local heating can be used to induce solid-state phase changes and large refractive index changes in the PCMs. The phase and index changes can provide large changes in the device's optical characteristics. Optical devices with PCM can be used for imaging applications, orbital angular momentum control, photonic integrated circuits and optical communication systems, beam steering, and other application.