400G ZR+ BiDi does not exist, it can't hurt you. Or can it? (denog17)

As it's common practice, each new hacker event needs something weird and funky. For this years summer camp in the Netherlands called WHY2025, we build a 400G link over a single fibre. Since 400G BiDi does not exist (yet), we had to get creative and built something, which might be considered out of spec. Licensed to the public under http://creativecommons.org/licenses/by/4.0 about this event: https://pretalx.com/denog17/talk/KLXJS8/