2 ms·
The older wire based are more at risk, fiber is immune. I am not sure of the housing or any internal steel wires used for strength, but fiberglass or kevlar str
by aurizon 5y ago
The older wire based are more at risk, fiber is immune. I am not sure of the housing or any internal steel wires used for strength, but fiberglass or kevlar strength cable are also immune. Armor?- steel - that would get a current hit but would attenuate it via the spiral current path. In addition the conductive volumetric shield of deep sea water would also attenuate the EMP?
Do modern fibers need repeaters? or do they use distributed amplification via co-carried laser light that offsets losses?
- bcrl 5y agoLong haul fibres need EDFAs to boost the optical signal so that it can travel through thousands of kilometers of fibre. EDFAs need laser light to perform amplification. Generating laser light requires electricity. Electricity requires conductive wires. Conductive wires are susceptible to induced currents caused by solar flares over large distances. The IEEE brings this up every few years into relation with the electrical grid. A massive solar flare will likely result in humanity being thrown into chaos for multiple years with large chunks of infrastructure being offline until low volume high cost replacement parts (especially high voltage transformers) are built.