The first theoretical models of the propagation of an electromagnetic field in a waveguide date back to the second half of the 19th century (Hertz, Debye, Rayleigh). The technological fallout for long ...

The scattering of an acoustic wave propagating in a non-uniform waveguide is inspected by revisiting improved multimodal methods in which the introduction of additional modes, so-called boundary modes ...

The refraction of acoustic duct waveguide modes emitted from the open end of a semi-infinite rectangular duct by a jet-like exhaust flow is studied theoretically.The problem is formulated as a ...

In a paper published in the journal Advanced Photonics, researchers demonstrated broadband nonlinear frequency conversion using mode-hybridization on X-cut thin film lithium niobate. They achieved ...