The following article presents the results of research connected with modeling lighting optical fibers of the 'side-core' type. Distribution of the luminous flux was caused by its emission from the surface of the cladding, which is modified in such a way that its refractive index is larger than the refractive index of the material of the core. Luminous intensity and luminance of the model optical fiber curves were also determined, their suitability for lighting was also evaluated.
Maciej Zajkowski, Maciej Zajkowski,
"Lighting optical fibers of the side-core type with modified cladding", Proc. SPIE 5028, Optical Fibers and Their Applications VIII, (14 April 2003); doi: 10.1117/12.497608; https://doi.org/10.1117/12.497608