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Non-Intrusive Testing On High Bend Radius Fiber

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Non-Intrusive Testing On High Bend Radius Fiber

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  • Author: Francis Audet
Fiber-to-the-home (FTTH) requires larger angles of bending and more compact fiber-management systems. This has forced the fiber industry to develop new fiber technology that allows fibers to remain efficient in environments where extreme bending occurs. These fibers, commonly referred to as low-loss high bend radius fibers1, protect the network by limiting high losses that can result from fiber pinching or bending, therefore, making twisting, pulling and all physical manipulation of the fiber less damageable. These fibers are great for installation, but for maintenance and upgrades, a number of issues can emerge. One of the favored tools in central offices and cabinets is the live fiber detector, which uses a macro-bending technique to eject light, thus enabling live fiber identification or dark fiber management with modulated tones (e.g., 1 kHz or 2 kHz tones).

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