Point by point method demonstrates cladding and core mode coupling in tilted fibre Bragg gratings, indicating new possibilities.
To the best of our knowledge the inscription of tilted fibre Bragg gratings via the point by point method, without beam shaping, has been demonstrated for the first time. Using two parallel inscribed FBGs we have been able to create cladding and core mode coupling effects indicative of a tilted FBG.
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Hainsworth et al. (2025) studied this question.
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