Interesting.

Not sure if this is specifically pointed at POET but this paragraph mentions something that POET possesses..

Includes an extensive library of PIC elements such as bidirectional waveguides, bidirectional couplers and connectors, light sources such as lasers and VCSELs, modulators, phase shifters and photodiodes such as PINs and APDs. This modular, system-level modeling framework complements the RSoft products' geometrical-layout-based device tools and addresses system complexity while offering an easy-to-use, block-oriented design method for higher productivity.