首页> 外文期刊>Applied optics >Tellurite glass defect-core spiral photonic crystal fiber with low loss and large negative flattened dispersion over S plus C plus L plus U wavelength bands
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Tellurite glass defect-core spiral photonic crystal fiber with low loss and large negative flattened dispersion over S plus C plus L plus U wavelength bands

机译:在S + C + L + U波段上具有低损耗和大的负扁平色散的碲酸盐玻璃缺陷芯螺旋光子晶体光纤

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摘要

A defected-core spiral photonic crystal fiber is proposed to achieve very large negative flattened dispersion and small confinement loss. Simulation results reveal that the designed structure exhibits very large flattened dispersion over S + C + L + U wavelength bands and an average dispersion of about -720.7 ps nm(-1) km(-1) with an absolute dispersion variation of 12.7 ps nm(-1) km(-1) over the wavelength ranging from 1.45 to 1.65 mu m. The proposed fiber has five air-hole rings in the cladding leading to very small confinement loss of 0.00111 dB/km at the excitation wavelength of 1.55 mu m. The tolerance of the fiber dispersion of +/- 2% changing in the structural parameters is investigated for practical conditions. (C) 2015 Optical Society of America
机译:提出了一种有缺陷的芯螺旋光子晶体光纤,以实现很大的负扁平平坦度和很小的限制损耗。仿真结果表明,设计的结构在S + C + L + U波段上显示出非常大的平坦色散,平均色散约为-720.7 ps nm(-1)km(-1),绝对色散变化为12.7 ps nm (-1)km(-1)在1.45至1.65μm的波长范围内。所提出的光纤在包层中具有五个气孔环,从而在1.55μm的激发波长下导致0.00111 dB / km的很小的限制损耗。对于实际条件,研究了结构参数变化中+/- 2%的纤维分散体的公差。 (C)2015年美国眼镜学会

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