  Research achievements in hollow-core photonic crystal fibers technology allow
ascertaining such fibers as outstanding platforms for delivering high-power
laser beams. Indeed, the key property underlying the success of this family of
optical fibers for high-power beam delivery is their capability of efficiently
transmitting light through empty space with minimal interaction with the fiber
microstructure. In this context, here we widen the framework of hollow-core
fiber-based beam delivery applications by demonstrating their utilization as
promising platforms for Power-over-Fiber systems. Thus, we report on the use of
a tubular-lattice hollow-core fiber to deliver a watt-level continuous-wave
laser beam onto a photovoltaic converter and activate a representative camera
circuit. We believe that the experiments reported herein allow identifying
hollow-core fibers as eligible candidates for next-generation Power-over-Fiber
devices potentially able to lift the power restrictions of current solid-core
fiber-based Power-over-Fiber systems.
