It is possible to decompose any elliptically polarized waves into two circularly polarized waves, where one is left handed and the other is right handed! This videos shows a simple example of how to do that. A visualization using
one of University of Michigan's applets. Note: circularly polarized waves are used everywhere. Since they have equal magnitudes at every point in time, it will be a lot easier for devices to receive an electromagnetic signal. Otherwise, if a mobile signal is sent to you in, say, a linearly polarized wave, then your phone would have to be positioned in a very specific angle to receive that text/call! Even though decomposing a circularly polarized wave does not constitute there actually being a circularly polarized wave, this is still a very helpful tool
