Microbends of Fibers
Microbends largely arise not during the process of pulling the fiber from the preform, but when the fiber is cabled or spooled. Of course, the amount of microbends depends strongly on the cabling or spooling technology. For modern telecom fibers, microbends are carefully minimized.
It is also possible to intentionally introduce microbends e.g. in order to realize a special kind of fiber Bragg grating .
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