Laser beam self-focusing in optical fiber controlled through FBG integration
Optical fibers are elements that are mainly used
as a means to transmit light. In this paper, a fiber optic
constituted by a core, a cladding and a Bragg grating in the core
center has been studied. A laser beam with a Gaussian shape is
let to propagate through the core of the fiber with an intensitydependent
refractive index. In the center of the fiber, the
refractive index will reach the highest value, focusing the beam.
This property of the Gaussian beam to a specific intensity