Related Experiment Video
Updated: Sep 11, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
All-fiber generation and Poincaré sphere representation of double superposition states of OAM modes
Abstract:
This paper proposes a hybrid-order orbital angular momentum Poincaré sphere to refine the representation of high-order spatial modes. The orbital angular momentum Poincaré sphere is extended to a more general form. Benefiting from the degenerate case of the hybrid-order Poincaré sphere, this new Poincaré sphere is both complete and intuitive, enabling the guided generation of vector light fields. By utilizing an all-fiber structured light field generation system based on cascaded fused-biconical tapered mode selective couplers, some typical beams corresponding to arbitrary points on the hybrid-order orbital angular momentum Poincaré sphere are generated. This miniaturized solution for structured light field generation is both cheap and fast compared to liquid crystal devices.
Related Concept Videos
Modes of Standing Waves - I
Modes of Standing Waves: II
For a tube open at one end and closed at the other filled with air, the modes are such that there is always an antinode at the open end and a node at the closed end....
Molecular Orbital Theory I
Standing Electromagnetic Waves
Suppose a sheet of a perfect conductor is placed in the yz-plane, and a linearly polarized electromagnetic wave traveling in the...
Symmetry in Maxwell's Equations
Plane Electromagnetic Waves I
The EM field is assumed...

