Macrobending

Macrobending occurs when the Fiber is bent into a visible curvature.

A relatively large-radius bend in an Optical Fiber may be found in a Splice organizer Tray or a fiber-optic Cable that has been bent. Note: A macrobend will result in no significant Radiation Loss if it is of sufficiently large radius. The definition of "sufficiently large" depends on the type of fiber. Single-mode fibers have a low numerical aperture, typically less than 0.15, and are therefore are more susceptible to bend losses than other types. Normally, they will not tolerate a minimum Bend Radius of less than 6.5 to 7.5 Cm (2.5 to 3 inches). Certain specialized types of single-mode fibers, however, can tolerate a FAR shorter Minimum Bend Radius without appreciable loss. A Graded-Index Multimode Fiber having a Core diameter of 50 m and a Numerical Aperture of 0.20 will typically tolerate a minimum bend radius of not less than 3.8 cm (1.5 inches). The fibers commonly used in customer-premises applications (62.5-m core) typically have a relatively high numerical aperture, (approximately 0.27), and can tolerate a bend radius of less than an inch (2.5 cm). See Microbending See Macrobending Loss See Bending Loss See Microbend Modulated Sensor




Related Terms
Macrobending Loss,  

External links for Macrobending
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Macrobending on The Free Dictionary

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