Publications by authors named "Xiongfeng Rao"
Article Synopsis
- A new type of fiber, called chirally-coupled-ring fiber (CCRF), is designed to efficiently generate and detect various orbital angular momentum (OAM) modes using a unique structure with inner and outer cores and twisted dielectric rods.
- The study involves theoretical modeling to explain how CCRFs can produce spin-entangled OAM eigenmodes, showcasing the advantages in power transfer and mode coupling through simulation and experiments.
- CCRFs demonstrate high conversion efficiencies and mode purities across a range of OAM topological charges, providing a flexible solution for OAM mode manipulation and promising applications in fiber-based multiplexing communications.
The orbital angular momentum (OAM) of light is particularly promising for multi-channel data transmission in optical fiber communications. In the implementation, one of the impediments is the lack of an effective all-fiber method to demultiplex and filter OAM modes. To solve the problem, by utilizing the inherent spiral characteristics of a chiral long-period fiber grating (CLPG), we propose and demonstrate experimentally a CLPG-based scheme for filtering spin-entangled OAM of photons.
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