A phase-interrogation approach for the bulk refractive index sensing based on a silicon-on-insulator (SOI) ring resonator is introduced. The rapid phase variation around the resonance of the ring resonator is interrogated. and a single-sideband generation and coherent detection technology is adopted for the phase measurement. In the proposed approach. https://www.spidertattooz.com/Horse-Painting-3-Piece-HD-Multi-Panel-Canvas-Wall-Art-Frame/