100G over 100 km of dark fiber

Fri Oct 30 14:33:58 UTC 2020

You may also find that 100G PAM4 could work.  There are some vendors that
sell the optic, and an outboard EDFA + DCF pizza box.

Dale

Thus spake Tarko Tikan (tarko at lanparty.ee) on Fri, Oct 30, 2020 at 04:25:58PM +0200:
> hey,
> 
> > I need to push 100G over 100 km of dark fiber. Since there are no 100G pluggable optics with this reach (~25 dB), I have been offered coherent transport systems to solve my problem. This is all good and well, except total system costs start from high five figures.
> 
> 100G-ZR4 QSFP28 is on the market and works. Just watch out for power
> limitations, your typical DC switch might not support it but proper stuff
> has no problems providing 6.5W of power.
> 
> -- 
> tarko