一种低串扰近零超平坦色散七芯光子晶体光纤的设计

摘要/Abstract

摘要： 设计了一种七芯低串扰近零超平坦色散液体填充光子晶体光纤,利用有限元法模拟计算了色散、芯间串扰和弯曲损耗等性能.数值模拟结果表明,该多芯光纤在实现近零宽带超平坦色散的同时,显著抑制了芯间串扰和弯曲损耗.在波长为1.38~1.74 μm时,色散值介于0±0.5 ps/(km·nm)之间,且色散斜率介于0±0.02 ps/(km·nm²)之间.芯间串扰在C+L波段的最大值低于－84.09 dB/100 km,并且弯曲损耗值满足ITU-T建议的G.654光纤在125 μm包层直径中对七芯光子晶体光纤的要求.

关键词: 空分复用, 色散平坦, 芯间串扰, 弯曲损耗, 多芯光纤

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

中图分类号:

TN929.11

范世卓, 侯尚林, 雷景丽. 一种低串扰近零超平坦色散七芯光子晶体光纤的设计[J]. 兰州理工大学学报, 2024, 50(4): 94-102.

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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