US Patent Issued to SiFotonics Technologies (Beijing) on July 1 for "Silicon-based integrated optical chip" (Chinese Inventors)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,921, issued on July 1, was assigned to SiFotonics Technologies (Beijing) Co. Ltd. (Beijing).

"Silicon-based integrated optical chip" was invented by Yadong Liu (Beijing), Pengfei Cai (Beijing) and Tzung-I Su (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a silicon-based integrated optical chip integrating a silicon-based optical modulator and a germanium-silicon detector and a preparation method thereof. A position and dimension of a silicon nitride waveguide are defined by a slot formed by using an etching process, then surplus silicon nitride is removed by means of chemico-mechanical polishing, and an optical...