Oh boy! pedant time. note that ethernet and gpon(single line fiberoptic) are not broad band, they are base band.
Broad band does not mean speed. it means it uses a lot of frequencies at the same time.
OK getting dizzy here from too much excitement, pedant time is over for this week. We are all allowed to go back to using the non-technical meaning of broadband where it means speed.
Maybe old fashioned "blink on means 1, no light means 0" is base-band, but these days they have virtual data channels and bidirectional fiber transmits on a different frequency than it receives on...so definitely broad-band.
Broad band does not mean speed. it means it uses a lot of frequencies at the same time.
OK getting dizzy here from too much excitement, pedant time is over for this week. We are all allowed to go back to using the non-technical meaning of broadband where it means speed.