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Optical fiber communications technology has emerged from optical communications and has become one of the main pillars of modern communications, playing a decisive role in modern telecommunications networks.

In the selection of optical fiber, should pay attention to the tensile strength and heat resistance of optical fiber. Fiber optic tensile strength is generally 50N or higher, heat resistance requirements should be able to withstand -20 ° C to 60 ° C within forty hours of temperature change.