US Patent Issued on Jan. 28 for "System and apparatus of controlling ring resonator operating points" (California Inventors)

ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,210,198, issued on Jan. 28.

"System and apparatus of controlling ring resonator operating points" was invented by Tongqing Wang (Newark, Calif.), Xingyu Zhang (Fremont, Calif.), Dawei Zheng (Irvine, Calif.) and Zhoufeng Ying (Milpitas, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and system for locking the resonance frequency of ring resonators by using laser sources to emit a plurality of different wavelengths, applying a tagging signal to each of the wavelengths, multiplexing the tagged wavelengths using a wavelength division multiplexor, coupling the multiplexed tagged wavelengths onto a bus waveguide, detecting the multiplexed tagg...