光纤中慢光群折射率限定特性研究

发布时间：2018-06-01 08:18

  本文选题：光纤 + 群折射率　； 参考：《发光学报》2017年03期

【摘要】：粒子在基态和亚稳态之间的振荡会导致探测光吸收的降低,而探测光束在很窄的频率范围内吸收的降低,会使介质的感生折射率在同样范围内迅速变化,从而改变群折射率ng=n(ω)+ωdn/dω。本文利用光纤慢光理论,对不同条件下的群折射率限定和群速度的变化特性展开讨论。群折射率随光纤长度的增加而降低,不同离子浓度的掺铒光纤中慢光的感生群折射率均随调制频率的增加而降低,同时在不同的调制频率条件下,群折射率随入射信号光强度的增大均有一个饱和的过程。
[Abstract]:The oscillation of particles between ground state and metastable state will lead to the decrease of the absorption of probe light, while the decrease of absorption of probe beam in a narrow frequency range will cause the induced refractive index of the medium to change rapidly in the same range, thus changing the group refractive index ngn (蠅) 蠅 dn/d 蠅. In this paper, the limiting of group refractive index and the variation of group velocity under different conditions are discussed by using the theory of optical fiber slow light. The group refractive index decreases with the increase of fiber length, and the induced group refractive index of slow light in erbium doped fiber with different ion concentration decreases with the increase of modulation frequency. The group refractive index has a saturation process with the increase of the intensity of the incident signal.
【作者单位】： 辽宁大学物理学院;中国科学院低温工程学重点实验室(理化技术研究所);
【基金】：国家自然科学基金(51627809) 中国科学院国际大科学计划培训专项(1A1111KYSB20160017);中国科学院低温工程学重点实验室开放课题(CRYO201513)资助项目~~
【分类号】：TN253
，

本文编号：1963507