Hi all,

I was researching fibre optics/ data transmission for a competition when I came upon this source: https://www.dtu.dk/english/newsarchive/2022/10/new-data-transmission-record.

It states: "researchers succeeded in transmitting 1.8 Pbit/s, which corresponds to twice the total global Internet traffic".

I cannot find any sources to back this statement of " twice the global internet traffic" in the article nor on Google? Could anyone help me?

On a side note, I was wondering if anyone had a good resource that explained linear and non-linear effects (and perhaps the corresponding research on optical logic gates using said effects) that is clear and explanative to a student still doing A levels/ about to go to Uni. I'm struggling to understand the topic at the moment.