Reduced Fresnel losses in chalcogenide fibers obtained through fiber-end microstructuring

摘要

We demonstrate microstructuring of chalcogenide fiber facets in order to obtain enhanced transmission due to the antireflective properties of the microstructured surfaces. A variety of molding approaches have been investigated for As_(2)S_(3) and As_(3)Se_(3) fibers. Transmission as high as 97percent per facet was obtained in the case of As_(2)S_(3) fiber, compared to the native, Fresnel-loss limited, transmission of 83percent.