title: Angular-momentum coupled optical waves in chirally-coupled-core fibers.
abstract: A new type of interaction between optical waves occurs in chirally-coupled-core (CCC) fibers. Instead of linear-translational symmetry of conventional cylindrical fibers, CCC fibers are helical-translation symmetric, and, consequently, interaction between CCC fiber modes involves both spin and orbital angular momentum of the waves. Experimentally this has been verified by observing a multitude of new phase-matching resonances in the transmitted super-continuum spectrum, and theoretically explained through modal theory developed in helical reference frame. This enables new degrees of freedom in controlling fiber modal properties.
authors.affiliation: Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA. xqma@umich.edu
authors.forename: Xiuquan
authors.initials: X
authors.lastname: Ma
authors.forename: Chi-Hung
authors.initials: CH
authors.lastname: Liu
authors.forename: Guoqing
authors.initials: G
authors.lastname: Chang
authors.forename: Almantas
authors.initials: A
authors.lastname: Galvanauskas
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008962:Models, Theoretical; D055100:Optical Fibers; D012542:Scattering, Radiation