optical fiber techenology
Anincreasingproportionoftheworld’scommunicationsarecarriedbyfiber
opticcables.Ithasspreadquietly,almostwithoutbeingnoticedintoeverysitu-
ationinwhichinformationisbeingtransmittedwhetheritiswithinthehome
hi-fisystem,cabletelevisionortelecommunicationcablesund
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