Patent date : january 3rd, 2023
Patent number : 11543588
Inventors : William Ring, NJ (USA), Miroslaw Florjanczyk, Kanata (Canada), Suresh Venkatesan, Los Gatos CA (USA)
Optical Dielectric Planar Waveguide Process
https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/11543588