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I worked with glass fibre multiplexers that used multiple colours of might back in 2000. It's called DWDM. I moved on to different things so I don't know if it'
by GekkePrutser 4y ago
I worked with glass fibre multiplexers that used multiple colours of might back in 2000. It's called DWDM. I moved on to different things so I don't know if it's still used, I assume so because it had no real drawbacks. But it was definitely a thing used on many expensive long distance fibres.
On the short ones it wasn't used because the equipment was more expensive than just laying more fibre.
- hinkley 4y agoWhatever happened with polarized light? I recall at one point them deciding it needed either a different chemical formula for the fiber or tighter tolerances on the surface? Either way the problem was that yes they could shove more bandwidth down the pipe but you needed to run new fiber to get it. I didn’t hear anything after that.
- GekkePrutser 4y agoIf you have to run more fibre, there is no point. Because the main cost of running fibre is the work, not the material. And it's so thin you can run as many as you want. So, if you're going to run new fibre anyway, just run 10x as much as you need. In fact this is pretty standard procedure with most telcos. Not sure about the polarisation by the way, when I was working with this it was not yet a thing but it's decades ago.