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. 07, 2026
Filed:
May. 22, 2023
The Charles Stark Draper Laboratory, Inc., Cambridge, MA (US);
Zhuoran Fang, Seattle, WA (US);
Rui Chen, Seattle, WA (US);
Jiajiu Zheng, Seattle, WA (US);
Asir Intisar Khan, Stanford, CA (US);
Kathryn M. Neilson, Stanford, CA (US);
Sarah J. Geiger, Cambridge, MA (US);
Dennis M. Callahan, Jr., Cambridge, MA (US);
Michael G. Moebius, Cambridge, MA (US);
Abhi Saxena, Seattle, WA (US);
Michelle E. Chen, Stanford, CA (US);
Carlos Rios, College Park, MD (US);
Juejun Hu, Cambridge, MA (US);
Eric Pop, Stanford, CA (US);
Arka Majumdar, Seattle, WA (US);
Abstract
In one aspect, an integrated photonic device is disclosed, which comprises a waveguide through which radiation having one or more wavelengths within a wavelength band can propagate, a phase shifter optically coupled to said waveguide. The phase shifter comprises a heat-actuable phase change material (PCM) optically coupled to the waveguide, and a heater having a layer of a two-dimensional material in thermal communication with the PCM and configured to receive a reset voltage pulse for causing heating of the graphene layer followed by cooling thereof, wherein the thermal communication between the heated graphene layer and the PCM causes at least a portion of the PCM to undergo a phase transition from a crystalline state to an amorphous state, thereby causing a change in a refractive index of the PCM and a resultant phase shift in the radiation propagating through the waveguide.