[EA-3167]

The energy densities required for photon-photon interactions are so far beyond anything we need to worry about that it's a non-issue. Photons also aren't going to just ignore local potential barriers and tunnel at the energy levels and scales involved in foreseeable chip designs either.

[wyager]

P-p interactions are not an issue but we do have high enough field intensities in high bandwidth fibers to run into p-f nonlinearity issues.