The fibre I used 50 years ago was in an industrial setting and nothing to do with telecom's, it was all very new back then.
Also early days on LED's only red was made in a glass envelope (still got some ).
Lasers where only just being developed as well.
The modern fibre is totally different now.
The chaps gave me a few 'Off Cuts' today and the total fibre's combined in the cores of the 3x 36 fibre cable would = one fibre cable back then.
The fibre that's being laid in our village is made in India
and the CBT's are made in Poland
according to the labels I read today.
We also had a new device back then called a 'Modem', even though they had been invented in the 1960's not many people knew what they could be used for.
we rigged it up between two offices using the telephone wires to send data from electronic instruments (our telecom's chaps were not impressed) it worked very well, where would we be now without a Modem.
We rigged up a system using modems for sending data from all around the uk to our head offices back in the 1970's
Edit.... the Modem we used in the 1970's was only the IC Chip, we had to build the rest of the circuit on a small piece of 'Vero-board' circuit board and powered it from a lab power supply.
It was great being involved back then in the development of what we call now our normal technology.
Edited by APTMAN (Thu 30-Jul-20 22:56:35)