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(封面文章)

doi:10.3969/j.issn.1007-5461.2026.03.009

量子电子学报 ›› 2026, Vol. 43 ›› Issue (3): 421-430.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(封面文章)

邱江 1, 闫宇 1, 李嘉敏 1,2*, 肖连团 1,2,3,4*

1 太原理工大学物理与光电工程学院, 山西太原 030024; 2 精密测量物理山西省重点实验室, 山西太原 030024; 3 太原理工大学新型传感器与智能控制教育部重点实验室, 山西太原 030024;4 山西大学光量子技术与器件全国重点实验室激光光谱研究所, 山西太原 030006

收稿日期:2025-12-22 修回日期:2026-03-03 出版日期:2026-05-28 发布日期:2026-05-28
通讯作者: E-mail: lijiamin@tyut.edu.cn; xlt@sxu.edu.cn E-mail: E-mail: lijiamin@tyut.edu.cn; xlt@sxu.edu.cn
作者简介: 邱江 ( 2001 - ), 江西赣州人, 研究生, 主要从事光纤超连续谱仿真方面的研究。E-mail: qiujiangjiayou@163.com
基金资助:
国家自然科学基金 (U23A20380, 62305240)

Design of an optical fiber with dual zero⁃dispersion wavelengths forming a narrow anomalous dispersion band for high⁃ coherence mid⁃infrared supercontinuum generation(Cover Paper)

QIU Jiang 1 , YAN Yu 1 , LI Jiamin 1,2*, XIAO Liantuan 1,2,3,4*

1 College of Physics and Optoelectronic Engineering, Taiyuan University of Technology, Taiyuan 030024, China;2 Shanxi Key Laboratory of Precision Measurement Physics, Taiyuan 030024, China; 3 Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China; 4 Institute of Laser Spectroscopy, State Key Laboratory of Quantum Optics Technologies and Devices, Shanxi University, Taiyuan 030006, China

Received:2025-12-22 Revised:2026-03-03 Published:2026-05-28 Online:2026-05-28

摘要/Abstract

摘要： 本文提出了一种锗芯硅包层六角晶格光子晶体光纤, 采用改进的灰狼优化算法对光纤结构参数进行逆向优化设计, 使其在中红外波段形成了由两个零色散波长界定的窄反常色散带(5.196~7.544 µm)。数值模拟表明, 利用峰值功率为2 kW、脉冲宽度为100 fs、泵浦波长为5.5 µm的泵浦光激发该光纤, 可产生覆盖3~10 µm的中红外超连续谱。在引入1%振幅抖动、反相关脉宽抖动及量子噪声的混合噪声模型条件下, 产生的中红外超连续谱平均一阶复相干度保持在98.27%。本研究证实了超短脉冲激光在硅锗光纤的窄反常色散带内泵浦产生宽带高相干中红外超连续谱的可行性。

关键词: 中红外超连续谱, 光子晶体光纤, 反常色散带, 相干性

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.

Key words: mid-infrared supercontinuum, photonic crystal fiber, anomalous dispersion band, coherence

中图分类号:

TN242
TN219

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(封面文章)[J]. 量子电子学报, 2026, 43(3): 421-430.

QIU Jiang , YAN Yu , LI Jiamin , XIAO Liantuan , . Design of an optical fiber with dual zero⁃dispersion wavelengths forming a narrow anomalous dispersion band for high⁃ coherence mid⁃infrared supercontinuum generation(Cover Paper)[J]. Chinese Journal of Quantum Electronics, 2026, 43(3): 421-430.

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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(封面文章)

Design of an optical fiber with dual zero⁃dispersion wavelengths forming a narrow anomalous dispersion band for high⁃ coherence mid⁃infrared supercontinuum generation(Cover Paper)

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