500 OAM Modes Over 360-nm Communications Bandwidth

We propose and design a hollow As2S3 ring-core photonic crystal fiber (PCF) with 514 radially fundamental orbital angular momentum (OAM) modes over 360 nm communications bandwidth across all the O, E, S, C, and L bands. The designed PCF with 40 [Formula Omitted]-radius air core and 150 nm-width As2S...

Full description

Saved in:
Bibliographic Details
Published in:IEEE access 2021-01, Vol.9, p.66999
Main Authors: Wang, Yingning, Lu, Yao, Bao, Changjing, Geng, Wenpu, Fang, Yuxi, Mao, Baiwei, Wang, Zhi, Yan-Ge, Liu, Huang, Hao, Ren, Yongxiong, Pan, Zhongqi, Yang, Yue
Format: Article
Language:English
Subjects:
Angular momentum
Arsenic trisulfide
Bandwidths
Bend radius
Communications systems
Crystal fibers
Multiplexing
Numerical analysis
Optical communication
Optical fibers
Photonic crystals
Refractivity
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We propose and design a hollow As2S3 ring-core photonic crystal fiber (PCF) with 514 radially fundamental orbital angular momentum (OAM) modes over 360 nm communications bandwidth across all the O, E, S, C, and L bands. The designed PCF with 40 [Formula Omitted]-radius air core and 150 nm-width As2S3 ring can support eigenmodes up to HE130,1 and EH128,1. The numerical analysis shows that the designed ring PCF has large effective refractive index contrast, and can transmit up to 874 OAM modes near 1.55 [Formula Omitted]. Simulation results show that in the C and L bands, the PCF with a hollow-core radius of 40 [Formula Omitted] and a ring width of 0.15 [Formula Omitted] can retain an [Formula Omitted] effective refractive index difference between the two highest order OAM modes, which achieves effective mode separation, thereby achieving stable OAM mode transmission. The [Formula Omitted] difference between the even and odd fiber eigenmodes and the intra-mode walk-off are also carefully studied under different bending radii. The results show that higher-order OAM modes has better tolerance to the fiber bending, compared with the lower-order modes. The fiber has the potential to support ultra-high capacity OAM mode division multiplexing in the optical fiber communication systems.
ISSN:2169-3536
DOI:10.1109/ACCESS.2021.3076490