2022
DOI: 10.1364/ol.459564
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Optical isolation via direction-dependent soliton routing in birefringent soft matter

Abstract: We introduce optical isolation based on reorientational solitary waves in nonuniformly oriented uniaxial soft matter, namely nematic liquid crystals. A longitudinally nonsymmetric angular distribution of the optic axis provides the system with direction-dependent routing, resulting in an all-optical diode owing to input-side sensitive steering. Numerical experiments demonstrate the phenomenon and its effectiveness in realistic samples.

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Cited by 7 publications
(3 citation statements)
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“…NFS also extended his work towards the control of solitons via external voltages or potentials [41], other beams [42] and boundaries [43], aiming at reliable design tools for optical devices based on reorientational nematic liquid crystals. One of his last publications dealt with optical isolation using nematicon waveguides in samples with graded orientation of the molecular director [44].…”
Section: Nonlinear Self-guided Beams In Soft Mattermentioning
confidence: 99%
“…NFS also extended his work towards the control of solitons via external voltages or potentials [41], other beams [42] and boundaries [43], aiming at reliable design tools for optical devices based on reorientational nematic liquid crystals. One of his last publications dealt with optical isolation using nematicon waveguides in samples with graded orientation of the molecular director [44].…”
Section: Nonlinear Self-guided Beams In Soft Mattermentioning
confidence: 99%
“…Stemming from the conspicuous interest afforded in photonics by isolators and nonreciprocal responses at optical frequencies [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30], in this Paper we discuss the propagation of nematicons and their induced waveguides in orientation-modulated NLC planar cells, demonstrating that a non-specular in-out molecular distribution [31] in the nonlinear regime supports non-symmetric soliton propagation and transmission when identical light-beams are launched from opposite ends of the sample [32][33]. The resulting nonlinear optical behaviour is investigated by numerical experiments and interpreted in terms of nonreciprocity and diode-like isolation [34].…”
Section: Introductionmentioning
confidence: 99%
“…At variance with changes in wavelength, some schemes entail isolation through changes in the transmitted polarization [3] or output/input ports [2,15]. The phenomenon we address in this work can be framed in the latter category, as we investigate self-induced waveguides which, by launching intense beams from the opposite ends of a specific sample, establish signal pipelines with distinguishable paths, as alluded in [29]. Hence, the all-optical waveguide connecting the FP input to its output port after propagation does not overlap with the self-waveguide formed between the FP and the BP outputs, as illustrated in Figure 1.…”
Section: Introductionmentioning
confidence: 99%