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Optical network surprises sometimes like when certain wavelengths on a cable will become unreliable due to damage but others work fine.


Do the transceivers work around this (similar to what happens with DSL) or do you have to replace the whole fibre?


Hmm no I don't think so, the goal with multiplexing is to keep the streams separate so you can untangle them at the end since you're running multiple customers on a fiber. Losing a wavelength means less streams you can fit on it.




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