标题：Form factor of a planar light source and its application in optical fiber
作者：Yu, T; Wang, FX
作者机构：[Yu, T; Wang, FX]Shandong Univ, Sch Informat Sci & Eng, Jinan 250100, Peoples R China.
通讯作者地址：[Yu, T]Shandong Univ, Sch Informat Sci & Eng, Jinan 250100, Peoples R China.
来源：ACTA PHYSICA SINICA
关键词：fiber optics; multipole planar light source; form factor
摘要：By comparing the radiation field excited by a multipole point sow-cc with that excited by a cylindrical planar light source, the form factor of the planar light source is defined. The form factor is determined by the distribution of the source strength on the plane. A general formula for form factor is obtained, and several examples of form factor are given. Introduction of form factor in fiber optics completes the formulation of the boundary value problem. The influences of the distribution of the source strength to the modes propagating in a fiber are discussed briefly by using the form factor.