中国激光, 2003, 30 (9): 809, 网络出版: 2006-06-27
弱导光纤的标量衍射光束特性分析
Beam Characteristic Analysis of Scalar Diffraction from Weakly Guiding Optical Fiber
导波光学 弱导光纤 瑞利 索末菲衍射 空间频谱 中央亮斑 guided-wave optics weakly guiding optical fiber Rayleigh-Sommerfeld diffraction spatial frequency spectrum central disc
摘要
仿照罗兰圆光学系统构造罗兰球光学系统，在罗兰球中简化电磁波的瑞利 索末菲标量衍射积分公式，推导出折射率阶跃分布的弱导光纤LP模衍射场分布和空间频谱的计算公式。提出LP 01模远场衍射分布存在类似于平面波圆孔夫琅禾费衍射艾里斑的中央亮斑概念，并给出中央亮斑角半宽度的计算公式。
Abstract
Imitated the optical system of Rowland circle structure, the Rowland sphere structure is built in this paper, the Rayleigh-Sommerfeld diffraction scalar integral formula of electromagnetic wave is simplified on the Rowland sphere structure, the computational formulas of spatial frequency spectrum and diffractional far field distribution from the weakly guiding optical fiber LP mode are derived. The concept of central disc in LP 01 mode optical fiber diffractional far field, which had analogy to the Airy disc of plane wave Fraunhofer diffraction from circular aperture, is presented, and the calculational formulas of LP 01 mode optical fiber diffractional far field divergence half width is deduced in the end of this paper.
林斌, 郭福源, 陈钰清, 曹向群, 上官成木生. 弱导光纤的标量衍射光束特性分析[J]. 中国激光, 2003, 30(9): 809. 林斌, 郭福源, 陈钰清, 曹向群, 上官成木生. Beam Characteristic Analysis of Scalar Diffraction from Weakly Guiding Optical Fiber[J]. Chinese Journal of Lasers, 2003, 30(9): 809.
PDF全文
