  With the advent of the post-Moore era, researches on beyond-Complementary
Metal Oxide Semiconductor (CMOS) approaches have been attracted more and more
attention. Magnonics, or spin wave is one of the most promising technology
beyond CMOS, which magnons-quanta for spin waves-process the information
analogous to electronic charges in electronics. Information transmission by
spin waves, which uses the frequency, amplitude and (or) phase to encode
information, has a great many of advantages such as extremely low energy loss
and wide-band frequency. Moreover, using the nonlinear characteristics of spin
waves for information transmission can increase the extra degree of freedom of
information. This review provides a tutorial overview over the effects of spin
wave propagation and recent research progress in uniform spin wave waveguide.
The propagation characteristics of spin waves in uniform waveguides and some
special propagation phenomena such as spin wave beam splitting and
self-focusing are described by combining experimental phenomena and theoretical
formulas. Furthermore, we summarize methods for modulating propagation of spin
wave in uniform waveguide, and comment on the advantages and limitations of
these methods. The review may promote the development of information
transmission technology based on spin waves.
