Affiliation:
1. City University of Hong Kong
Abstract
A multi-ring core photonic crystal fiber (PCF) with seven high-index ring regions is designed for the transmission of multiple orbital angular momentum (OAM) modes. The new structure which has an optimized air hole arrangement shows improved transmission quantity and number of OAM modes. Numerical analysis reveals that the PCF can transmit 518 OAM modes in the range of 1.4–1.75 µm stably while avoiding cross talk from the adjacent ring core resulting in a low cross talk of merely −208.5dB, confinement loss less than 10−9dB/m, as well as mode quality greater than 0.925. The results disclose a new method to increase the communication capacity and suggest that the PCF has great application potential.
Funder
Provincial Talent Project
Hainan Province Science and Technology Special Fund
Local Universities Reformation and Development Personnel Training Supporting Project from Central Authorities
Natural Science Foundation of Heilongjiang Province
China Postdoctoral Science Foundation
City University of Hong Kong
City University of Hong Kong Donation Research Grant
Subject
Atomic and Molecular Physics, and Optics,Statistical and Nonlinear Physics