▎ 摘　　要

NOVELTY - The modulator (10) for manufacturing integrated optical waveguide has a dielectric layer (30) that is mounted on a conductive layer (20). The dielectric layer having a length along a direction of wave propagation. A plasmonic layer (40) is mounted on the dielectric layer. The plasmonic layer comprises a graphene sheet. A voltage signal source electrically connected between the conductive layer and the plasmonic layer for modulating a propagation speed of a surface plasmon polariton (SPP) wave propagating on the plasmonic layer. The dielectric layer is made from silicon dioxide (SiO2 ). USE - Graphene-based plasmonic phase modulator for manufacturing integrated optical waveguide used in terahertz (THz)-band communication. ADVANTAGE - (1) The models are validated and the performance of the plasmonic phase modulator is analyzed. (2) The symbol error rates (SER) for a digital phase modulation with uniform constellation is derived based on the symbol decision regions are due to symmetry and are easy to define. (3) The SER for the modulator is slightly higher but still comparable to that of the uniform case. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for modulating an surface plasmon polariton wave. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the phase modulator. Plasmonic phase modulator (10) Conductive layer (20) Dielectric layer (30) Plasmonic layer (40) Second end (46)