Re:OCaml All the Way Down – How Jane Street Builds FPGA Desi...
by datenwolf on Monday October 01, 2018 @10:14AM
(#18112680)
The basic principle has been invented over 30 years ago in 1987: https://ieeexplore.ieee.org/document/4258955
They're used in long haul communication for some 15 years or so. They're especially useful in submarine cables, for the sole reason, that new optical transmission schemes(modulation, wavelength multiplexing and so on) can be implemented by just replacing the equipment on either end, without the need to replace components down there on the seabed.
/me trying to get a handle on optical development.