This paper investigates the temperature dependence of a multi turn bend loss component based on SMF28. Papers investigating the bend loss effect, also known as macro bending, have been widely published with regard to eliminating or minimising the effect. Investigation of the effect especially multiple small diameter turns has had little attention. A mandrel of diameter 28m was wrapped 1.5meters of SMF28 and the insertion loss measured. The temperature dependence of the insertion loss was then investigated.
Theoretical modeling of macro-bend losses for a single mode fiber is firstly presented. Macro-bend losses for standard single mode fibers (SMF28) are investigated theoretically and experimentally. The agreement between theoretical calculation results and experimental measured results suggests that 1) most of the radiation field is absorbed in the inner coating layer of SMF28 and 2) so-called elastooptical correction is not required for SMF28.
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