Method for increasing coupling efficiency between helical-core and standard single-mode fibers.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.413358
Abstract: Helical core fibers (HCFs) suffer from low coupling efficiency and unavoidable excitation of higher order modes below the cutoff wavelength because of a core tilt with respect to the symmetry axis of the cladding. We… read more here.
Keywords: helical core; hcf; coupling efficiency; increasing coupling ... See more keywords
High-sensitivity strain sensor based on a helical-core long-period fiber grating.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.463020
Abstract: A highly sensitive strain sensor based on a helical-core long-period fiber grating (HC-LPFG) is proposed and experimentally investigated. The helical core is fabricated in the common single-mode fiber by using a high-frequency CO2 laser and… read more here.
Keywords: helical core; core; sensitivity; fiber ... See more keywords