title: Experimental study of low-loss single-mode performance in anti-resonant hollow-core fibers.
abstract: Anti-resonant hollow-core fibers are optical fiber waveguides which exhibit very low dispersion, high damage threshold and ultra-low nonlinear response. However, they typically deliver the light in several spatial modes, whereas their application usually requires that they support a single spatial mode. We report the principles, fabrication, demonstration and characterization of anti-resonant hollow-core fibres with strong differential modal attenuations and low overall attenuations. These fibers perform as single-mode and are eminently suitable for delivery of powerful ultrashort optical pulses in machining, cutting, welding and multiphoton microscopy applications.
authors.forename: Fei
authors.initials: F
authors.lastname: Yu
authors.forename: Mengrong
authors.initials: M
authors.lastname: Xu
authors.forename: Jonathan C
authors.initials: JC
authors.lastname: Knight