HAL (France)
open access
Fully controllable multichannel waveguides induced by counterpropagating Bessel beams
Abstract We theoretically analyze the waveguiding structures photo-induced by two incoherent counter-propagating Bessel beams (BBs) in a biased photorefractive crystal. We demonstrate that the cross-coupling of two BBs enables adressable channels and tunability of the forming guiding structures. The
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