量子电子学报2026，Vol.43Issue(3)：421-430,10.DOI:10.3969/j.issn.1007-5461.2026.03.009
利用双零色散点窄反常色散带光纤制备高相干中红外超连续谱
Design of an optical fiber with dual zero-dispersion wavelengths forming a narrow anomalous dispersion band for high-coherence mid-infrared supercontinuum generation
摘要
Abstract
This paper proposes a germanium-core silicon-cladding photonic crystal fiber with a hexagonal lattice structure.An improved Grey Wolf optimization algorithm is employed for the inverse design of the fiber's structure parameters,yielding a narrow anomalous dispersion band(5.196-7.544 µm)bounded by two zero-dispersion wavelengths in the mid-infrared region.Numerical simulations demonstrate that under femtosecond pulse pumping with a peak power of 2 kW,a pulse width of 100 fs at the wavelength of 5.5 µm,the fiber can generate a broadband mid-infrared supercontinuum covering 3 µm to 10 µm.Under the mixed noise model incorporating 1%amplitude fluctuation,anti-correlated pulse duration jitter,and quantum noise,the average first-order complex degree of coherence for the generated mid-infrared supercontinuum can be maintained at 98.27%.This study confirms the feasibility of generating broadband,highly coherent mid-infrared supercontinuum by pumping ultrashort pulses within the narrow anomalous dispersion band of silicon-germanium fibers,providing a promising light source solution for applications in mid-infrared optical frequency combs and precision spectroscopy.关键词
中红外超连续谱/光子晶体光纤/反常色散带/相干性Key words
mid-infrared supercontinuum/photonic crystal fiber/anomalous dispersion band/coherence分类
信息技术与安全科学引用本文复制引用
邱江,闫宇,李嘉敏,肖连团..利用双零色散点窄反常色散带光纤制备高相干中红外超连续谱[J].量子电子学报,2026,43(3):421-430,10.基金项目
国家自然科学基金(U23A20380,62305240) （U23A20380,62305240）
