Fig. 6: Illustration of light propagation in a hybrid photonic waveguide.

a Confocal optical, b FL and (c) corresponding color-coded FESEM, images of ferroelastic bent 1-Cl, 1-F, and, 1-Br crystal waveguides, respectively. d Stitched confocal microscope images of a hybrid photonic structure fabricated by mechanical integration of crystals shown in (a). e Graphical illustration of light squeezing in the fabricated hybrid photonic structure. T indicates the thickness of the crystal. T1-T4 stand for different crystal terminals. λ1(A) and λ1(P) correspond to active and passive signals operational in hybrid photonic waveguide.