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Besides mechanical destruction, another reason why one should avoid excessive bending of fiber-optic cables is to minimize microbending and macrobending losses. Microbending causes light attenuation induced by deformation of the fiber while macrobending causes the leakage of light through the fiber
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during installation, while being bent around a sheave while the fiber or cable is under tension. If no minimum bend radius is specified, one is usually safe in assuming a minimum long-term low-stress radius not less than 15 times the cable diameter, or 2 inches.
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also have a minimum bending radius. This radius is the radius below which the strain gauge will malfunction.
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The minimum radius to which one can bend a pipe, tube, sheet, cable, or hose without damage
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For metal tubing, bend radius is to the centerline of tubing, not the exterior.
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cladding and this is more likely to happen where the fiber is excessively bent.
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The minimum bend radius is of particular importance in the handling of
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without kinking it, damaging it, or shortening its life. The
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271:. June 1998
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133:Bend radius
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336:Plumbing
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