https://www.technologist.eu/new-record-data-transfer-speed-…

https://www.technologist.eu/new-record-data-transfer-speed-in-fiber-optic-network/
a data transfer rate of 500 Gbit/s for each wavelength would result in an overall transmission capacity of more than 50 terabits per second (Tbit/s: 1 Tbit = 1000 Gbit).