ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,554,060, issued on Feb. 17, was assigned to Cisco Technology Inc. (San Jose, Calif.).
"Polarization splitter rotator" was invented by Jean-Luc J. Tambasco (Macungie, Pa.) and Mark A. Webster (Bethlehem, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments herein describe a PSR that includes a rotator with two layers that are separated by a dielectric layer. A first layer of the rotator includes a first waveguide formed from a lower refractive index material (e.g., SiN) while a second layer of the rotator includes a second waveguide formed from a higher refractive index material (e.g., Si). An optical signal, which can include two optical modes...