Du Yungang, Li Jijun, Ying Chun, et al. Effects of central dip in refractive index on GIF dispersion characteristics. [J]. (6):48-51(2011) DOI: 10.13756/j.gtxyj.2011.06.002.
Effects of central dip in refractive index on GIF dispersion characteristics
This paper analyzes the causes of the generation of a central dip in the refractive index in fiber fabrication
sets up a model of the Graded-Index Fiber(GIF) with such a central dip and obtains the expressions for the time delay and self-focusing period of light transmissions by using the ray optics method.Simulation results show that with the increase of the dip width and depth
the self-focusing effects of the light beams in GIF become worse and the time delay difference increases.