Optimizing Evanescent Efficiency of Chalcogenide Tapered Fiber.

ABSTRACT: Evanescent wave absorption-based mid-infrared chalcogenide fiber sensors have prominent advantages in multicomponent liquid and gas detection. In this work, a new approach of tapered-fiber geometry optimization was proposed, and the evanescent efficiency was also theoretically calculated to evaluate sensing performance. The influence of fiber geometry (waist radius (R_w), taper length (L_t), waist deformation) on the mode distribution, light transmittance (T), evanescent proportion (T_O) and evanescent efficiency (τ) is discussed. Remarkably, the calculated results show that the evanescent efficiency can be over 10% via optimizing the waist radius and taper length. Generally, a better sensing performance based on tapered fibe

SUBMITTER: Zhao X 

PROVIDER: S-EPMC9181228 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature