Abstract
We present a hill-shaped refractive index (HS-RI) structure in 16-core fiber that can
provide 160 channels for the transmission system. The HS-RI mainly
settles the issue of the large inter-mode crosstalk (IMXT) between LP21 mode and LP02 mode. We obtain the optimized
parameters using the finite element method. Numerical analyses reveal
that the inter-core crosstalk (ICXT) of all modes is smaller than −30dB/100km in the C band, and the effective mode
refractive index difference (Δneff) is more than 1×10−3. The minimum effective mode field
area can achieve 89.80µm2, which greatly reduces the
nonlinearity of fiber. The max dispersion is 15.59ps/(nm∗km), which can greatly guarantee signal
quality in the transmission process. he relative core multiplexing
factor (RCMF) can reach 65.81, which realizes the high space division
multiplexing rate. The proposed fiber can be applied to a space
division multiplexing system to enhance the fiber transmission
channels and capacity.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Subject
Atomic and Molecular Physics, and Optics,Statistical and Nonlinear Physics