  Spin waves (SWs), being usually reflected by domain walls, could also be
channeled along them. Edge domain walls yield the interesting, and potentially
applicable to real devices property of broadband spin waves confinement to the
edges of the structure. Here we investigate through numerical simulations the
propagation of quasi one-dimensional spin waves in triangle-shaped amorphous
YIG ($Y_3Fe_5O_{12}$) micron sized ferromagnets as a function of the angle
aperture. The edge spin waves (ESWs) have been propagated over the corner in
triangles of 2 microns side with a fixed thickness of 85 nm. Parameters such as
superior vertex angle (in the range of 40$^\circ$-75$^\circ$) and applied
magnetic field have been optimized in order to obtain a higher transmission
coefficient of the ESWs over the triangle vertex. We observed that for a
certain aperture angle for which dominated ESW frequency coincides with one of
the localised DW modes, the transmission is maximized near one and the phase
shift drops to $\pi/2$ indicating resonant transmission of ESWs through the
upper corner. We compare the obtained results with existing theoretical models.
These results could contribute to the development of novel basic elements for
spin wave computing.
