| 矩形晶格高偏振、低损耗铋锗镓光子晶体光纤的结构设计及性能分析 |
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| 引用本文： | 谭芳,杨强,霍慕逸,周晶,周德春,许鹏飞.矩形晶格高偏振、低损耗铋锗镓光子晶体光纤的结构设计及性能分析[J].强激光与粒子束,2021,33(10):101002-1-101002-8. |
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| 作者姓名： | 谭芳 杨强 霍慕逸 周晶 周德春 许鹏飞 |
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| 作者单位： | 1.长春大学 理学院，长春 130000 |
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| 基金项目： | 吉林省教育厅“十三五”科学技术项目（JJKH20200565KJ）；吉林省科技厅项目（20200401053GX） |
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| 摘 要： | 非对称结构光子晶体光纤应用广泛。其良好的偏振特性、灵活的色散调控能力以及低限制损耗品质，对于优化与改善偏振光纤器件、非线性光学光纤、光通信光纤、光纤传感器等性能发挥着关键的作用。选用高折射率铋锗镓激光玻璃为材料，设计了八边形阵列、矩形晶格排列的光子晶体光纤，纤芯缺陷区包层及外包层均为圆形空气孔。模拟实验数据显示，结构参数为M=0.5，0.6时，在波长为1.55 μm处的双折射系数分别为1.16×10?2和1.33×10?2；在近红外波段短波区，矩形晶格结构光子晶体光纤的色散范围分别在±30 ps·nm?1·km?1之间及?18～32 ps·nm?1·km?1之间。色散斜率较低，曲线具有零色散点，展现了良好的连续谱调控能力；在1.00～1.90 μm波段内，当M=0.5，0.6时，光纤限制损耗稳定在10?7～10?9 dB·km?1之间；在1.55 μm处，限制损耗测量值分别为2.32×10?7和1.62×10?8 dB·km?1。
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| 关 键 词： | 矩形晶格 铋锗镓激光玻璃 双折射 色散特性 限制损耗 |
| 收稿时间： | 2021-04-02 |
Structural design and properties study of rectangular lattice high polarization low-loss-Bi-Ge-Ga photonic crystal fiber |
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| Affiliation: | 1.School of Science, Changchun University, Changchun 130000, China2.School of Material Science and Engineering, Changchun University of Science and Technology, Changchun 130000, China |
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| Abstract: | Asymmetric structure photonic crystal fibers are widely used. Its good polarization characteristics, flexible dispersion control ability and low limit loss quality play a key role in regulating and improving the performance of polarization fiber devices, nonlinear optical fibers, optical communication fibers, and fiber sensors. In this paper, high refractive index bismuth-germanium-gallium laser glass material is used and a photonic crystal fiber with an octagonal array and a rectangular lattice arrangement structure is designed. The core defect area cladding and outer cladding are all circular air holes. The simulation experiment data show that when the structural parameter M=0.5 and 0.6, the birefringence coefficients at the wavelength of 1.55 μm are 1.16×10?2 and 1.33×10?2, respectively; In the short-wave region of the near-infrared band, the dispersion range of rectangular lattice photonic crystal fiber is ±30 ps·nm?1·km?1 and ?18?32 ps·nm?1·km?1, respectively. The dispersion slope is low. The dispersion curve has a zero dispersion point, which demonstrates good continuous spectrum control ability; When M=0.5, 0.6, in the band of 1.00?1.90 μm, the limit loss keeps in 10?7?10?9 dB·km?1 stably; At the wavelength of 1.55 μm, the limit loss are 2.32×10?7 and 1.62×10?8 dB·km?1, respectively. |
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