Generation of vector type vortices in gradient fiber with spatial dependence of the refractive index

Slavchev, V., Dakova, A., Bojikoliev, I., Dakova, D., & Kovachev, L. (). Generation of vector type vortices in gradient fiber with spatial dependence of the refractive index. Journal of Optoelectronics and Advanced Materials; Journal of Optoelectronics and Advanced Materials.