We numerically demonstrate that Lithium Niobate on Insulator (LNOI) waveguides may support confined short-wavelength surface acoustic waves interact strongly with optical fields through backward stimulated Brillouin scattering in both $Z$ and $X$-cut orientation. conduct fully anisotropic simulations consider not only moving boundary photoelastic forces, but also roto-optic forces for the inter...

The stress-optical coefficient C σ of copolymers based on cured epoxy resins has been calculated. Calculations were made for bisphenol A and aliphatic aromatic diamines. values are in the range 91.6÷103 weight percent. All calculations carried out using Cascade computer program (developed by INEOS RAS). investigated structures obtained from industrial components. High make it possible to confid...