The material loss through the waveguides characterized by prism spectroscopy is <0.3dB/cm and is about one order of magnitude better than typically observed in small core silicon waveguides used in most other silicon photonics technologies.

Think of this way. Because POET's waveguides transfer light very efficiently this means there are less photons escaping and creating noise in neighboring waveguides. And of course power requirements are reduced as well as heat.