title: Observation of Interaction of Spin and Intrinsic Orbital Angular Momentum of Light.
abstract: The interaction of spin and intrinsic orbital angular momentum of light is observed, as evidenced by length-dependent rotations of both spatial patterns and optical polarization in a cylindrically symmetric isotropic optical fiber. Such rotations occur in a straight few-mode fiber when superpositions of two modes with parallel and antiparallel orientation of spin and intrinsic orbital angular momentum (IOAM=2ℏ) are excited, resulting from a degeneracy splitting of the propagation constants of the modes.
authors.affiliation: Department of Physics and Oregon Center for Optical, Molecular, and Quantum Science, University of Oregon, Eugene, Oregon 97403, USA.
authors.forename: Dashiell L P
authors.initials: DL
authors.lastname: Vitullo
authors.affiliation: Department of Physics, College of Wooster, Wooster, Ohio 44691, USA.
authors.forename: Cody C
authors.initials: CC
authors.lastname: Leary
authors.affiliation: Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, USA.
authors.forename: Patrick
authors.initials: P
authors.lastname: Gregg
authors.affiliation: Department of Physics and Oregon Center for Optical, Molecular, and Quantum Science, University of Oregon, Eugene, Oregon 97403, USA.
authors.forename: Roger A
authors.initials: RA
authors.lastname: Smith
authors.affiliation: Department of Physics and Oregon Center for Optical, Molecular, and Quantum Science, University of Oregon, Eugene, Oregon 97403, USA.
authors.forename: Dileep V
authors.initials: DV
authors.lastname: Reddy
authors.affiliation: Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, USA.
authors.forename: Siddharth
authors.initials: S
authors.lastname: Ramachandran
authors.affiliation: Department of Physics and Oregon Center for Optical, Molecular, and Quantum Science, University of Oregon, Eugene, Oregon 97403, USA.
authors.forename: Michael G
authors.initials: MG
authors.lastname: Raymer