US Patent Issued to Cisco Technology on Sept. 23 for "Tunable silicon nitride waveguide structure" (California Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,422,624, issued on Sept. 23, was assigned to Cisco Technology Inc. (San Jose, Calif.).

"Tunable silicon nitride waveguide structure" was invented by Matthew J. Traverso (Saratoga, Calif.) and Donald J. Adams (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments herein describe using an actuator to tune a waveguide. In one embodiment, the tunable waveguide includes a gap between the waveguide and cladding. The actuator can compress the cladding to shrink this air, bringing the cladding closer to the waveguide. Doing so changes the effective refractive index of the waveguide. Alternatively or additionally, the actuator can increase...