Discussion on divergence half-angle for two kinds of optical waveguides

作者：Li, Lianhuang^*; Guo, Fuyuan

来源：Optik, 2013, 124(17): 2998-3000.

DOI：10.1016/j.ijleo.2012.09.013

• Fiber optics
• Far-field
• Gaussian approximation
• Divergence half-angle

The characteristic of matching efficiency between the far-field of the fundamental mode for two kinds of waveguides and its Gaussian approximate field is analyzed respectively, then, a new method that divergence half-angle for the Gaussian approximation should be defined based on the maximal matching efficiency method is presented. Relationship between the divergence half-angle for the Gaussian approximate field obtained from the maximal matching efficiency method and normalized frequency is studied and two formulas of divergence half-angle as function of normalized frequency are proposed for two kinds of waveguides.

• 出版日期2013
• 单位福建师范大学