title: Control of orbital angular momentum of light with optical fibers.
abstract: We present a fiber-based method for generating vortex beams with a tunable value of orbital angular momentum from -1ℏ to +1ℏ per photon. We propose a new (to our knowledge) method to determine the modal content of the fiber and demonstrate high purity of the desired vortex state (97% after 20 m, even after bends and twists). This method has immediate utility for the multitude of applications in science and technology that exploit vortex light states.
authors: Boston University, 8 Saint Mary’s Street, Boston, Massachusetts 02215, USA. nesa@bu.edu
authors: Nenad
authors: N
authors: Bozinovic
authors: Steven
authors: S
authors: Golowich
authors: Poul
authors: P
authors: Kristensen
authors: Siddharth
authors: S
authors: Ramachandran