Design of a seven-core photonic crystal fibers with low crosstalk and nearly zero ultra-flattened dispersion
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 numeri-cally simulated by the finite element method.Numerical simulation results show that the fiber not only a-chieves nearly zero ultra-flattened dispersion but also significantly suppresses inter-core crosstalk and ben-ding 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.
space division multiplexflattened dispersioninter-core crosstalkbending lossmulti-core fibers
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