Intellectual Property India Publishes Patent Application for A Four-Pronged Hybrid Thin-Film Lithium Niobate / Silicon-Nitride Photonic Integrated Circuit With Graphene Guard-Ring Anti-Drift Stabilization, Inverse-Designed Polarization Metamaterial Filter, Three-Dimensional Interleaved Vertical Dual-Taper Coupler, And Etchless Strip-Loaded Waveguide Architecture

MUMBAI, India, Sept. 22 -- Intellectual Property India has published a patent application (202641109076 A) filed by Thinknex Technologies on September 11, 2026, for A Four-Pronged Hybrid Thin-Film Lithium Niobate / Silicon-Nitride Photonic Integrated Circuit With Graphene Guard-Ring Anti-Drift Stabilization, Inverse-Designed Polarization Metamaterial Filter, Three-Dimensional Interleaved Vertical Dual-Taper Coupler, And Etchless Strip-Loaded Waveguide Architecture.

Inventors include Casimeer Caroline Sangeetha; Arigala Haritha; Thatineni Meghana; and Bhavani Kumar Yellapragada.

The application for the patent was published on September 18, 2026, under issue no. 38/2026.

Abstract: A hybrid TFLN/SiN photonic integrated circuit comprises fou...