How to simulate an optical fiber in FDTD ?

please i need to simulate an optical fiber in FDTD in two dimensions
how can i do this?
if you have any materials(papers,thesis,codes) related please put it here

regards

please i need this phD thises it is very important to me

Analysis of a Two-Dimensional Cylinder Using the Finite Difference Time Domain Method
in the Cartesian Coordinate System, L. Xu, University, MS, University of Mississippi, 1996.
(bibkey=xu1996m

see this link it has a program implementing PCF and you can change the medium to deal with fiber optics
https://www.edaboard.com/viewtopic.p...675&highlight=

Also search for the post by xiangyuanjiang he is very effective and helpful