Multimode optical fiber and optical cable including the same

A multimode optical fiber comprising:

• an input end face;
• an output end face opposed to the input end face;
• a core with an outside diameter 2a extending from the input end face to the output end face and having an α-power refractive index profile;
• a cladding provided on an outer peripheral surface of the core;
• and
• a trench part provided between the core and the cladding and having a lower refractive index than the cladding,
• wherein, when an input position of a DMD measurement pulse on the input end face is represented by a distance r from a center of the core,
• a power of the DMD measurement pulse on the output end face with the input position r of the DMD measurement pulse being 0.8a is not more than 70% of a power of the DMD measurement pulse on the output end face with the input position r of the DMD measurement pulse being 0.