Yuanhui Wen

TL;DR: In this article, a new optical transformation that maps spirals (instead of concentric circles) to parallel lines was proposed to separate orbital angular momentum modes with superior resolution while maintaining unity efficiency, where the phase excursion along a spiral in the wave front of an optical vortex is theoretically unlimited.

TL;DR: In this paper, a low-cross-talk, wide-optical-bandwidth, polarization-insensitive, compact, and robust OAM mode sorter is proposed to realize the desired bidirectional conversion between seven co-axial OAM modes carried by a ring-core fiber and seven linearly displaced Gaussian-like modes in parallel single-mode fiber channels.

TL;DR: A comprehensive review of recent research on the key aspects of RCF-based MDM transmission is presented, including a theoretical comparison between RCFs and conventional step-index and graded-index multi-mode fibers in terms of their MDM capacity and the associated MIMO complexity.

TL;DR: A simple yet effective scheme using an azimuth-scaling spiral transformation that can accomplish both OAM multiplication and division by arbitrary rational factors in a single stage is proposed and experimentally demonstrated.

TL;DR: In this article, a superposition caustic method capable of winding light beams along non-convex trajectories was proposed to construct a one-dimensional accelerating beam moving along a sinusoidal trajectory, and subsequently extending to two-dimensional (2D) accelerating beams along arbitrarily elliptical helical trajectories.