Topological Photonic Crystal Ring Resonator Pressure Sensor in the Optical Communication Range.

ABSTRACT: Optical pressure sensors offer the advantages of high sensitivity, immunity to interference, and suitability for use in extreme environments. Based on the defect-immune, unidirectional transmission characteristics of valley photonic crystals (VPCs) and the refractive-index modulation of germanium under different pressures, we designed a topological ring resonator pressure sensor based on germanium VPCs. The shift of the resonance peak in the optical communication wavelength range with respect to pressure magnitude is studied to realize a pressure-sensing function. The results show that within the range of 0-10 GPa, the wavelength of the single resonance peak of the topological ring resonator pressure sensor shifts from 1580 nm to 1489 nm as the pressure increases. The sensor's maximum dete

SUBMITTER: Wu M 

PROVIDER: S-EPMC12845562 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature