Design of a seven-core photonic crystal fibers with low crosstalk and nearly zero ultra-flattened dispersion

Abstract

Abstract: In this paper, a liquid-filled seven-core photonic crystal fiber with low crosstalk and nearly zero ultra-flattened dispersion is designed, and its dispersion, inter-core crosstalk, and bending loss are numerically simulated by the finite element method. Numerical simulation results show that the fiber not only achieves nearly zero ultra-flattened dispersion but also significantly suppresses inter-core crosstalk and bending loss. At wavelengths of 1.38 μm to 1.74 μm, the absolute value of dispersion is less than 0.5 ps/(km·nm), while the absolute value of dispersion slope is less than 0.02 ps/(km·nm²). The maximum value of inter-core crosstalk is lower than －84.09 dB/100 km in the C+L band and the bending loss is lower than the ITU-T recommendations of G.654 in a seven-core PCFs with a 125 μm cladding diameter.

Key words: space division multiplex, flattened dispersion, inter-core crosstalk, bending loss, multi-core fibers

CLC Number:

TN929.11

FAN Shi-zhuo, HOU Shang-lin, LEI Jing-li. Design of a seven-core photonic crystal fibers with low crosstalk and nearly zero ultra-flattened dispersion[J]. Journal of Lanzhou University of Technology, 2024, 50(4): 94-102.

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