EXTRA LENGTH CONTAINING STRUCTURE FOR OPTICAL FIBER

PROBLEM TO BE SOLVED: To facilitate extra length processing work of optical fiber by providing a first winding drum fixed to a base movably between first and second positions, and a second winding drum fixed to the base movably between third and fourth positions. SOLUTION: A first supporting member 22 is fixed with a pair of grasping wire fixing part 40 and a pin 41 and a first winding drum 24 is fixed to a base 12 movably between a first fixing position on the base 12 and a second position projecting partially therefrom. A second supporting member 42 is fixed with a pin 55 and a second winding drum 44 is fixed to the base 12 movably between a third fixing position on the base 12 and a fourth position projecting partially therefrom. Consequently, an optical fiber can be wound under spatially loose state by turning the first and second winding drums to the parts projecting partially from the base.