Related Experiment Video
Updated: Aug 11, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
Observation of orbital angular momentum transfer between acoustic and optical vortices in optical fiber
Pedram Z Dashti1, Fares Alhassen, Henry P Lee
1Department of Electrical Engineering and Computer Science, The Henry Samueli School of Engineering, University of California, Irvine, Irvine, California 92697, USA.
Abstract:
Acousto-optic interaction in optical fiber is examined from the perspective of copropagating optical and acoustic vortex modes. Calculation of the acousto-optic coupling coefficient between different optical modes leads to independent conservation of spin and orbital angular momentum of the interacting photons and phonons. We show that the orbital angular momentum of the acoustic vortex can be transferred to a circularly polarized fundamental optical mode to form a stable optical vortex in the fiber carrying orbital angular momentum. The technique provides a useful way of generating stable optical vortices in the fiber medium.
Related Concept Videos
Energy Stored In A Coaxial Cable
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic field inside...
Atomic Nuclei: Larmor Precession Frequency
Interference and Diffraction
IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations
Standing Waves in a Cavity
Doppler Effect - II

