Abstract
This paper describes the potential bandwidth achieved by the graded-index polymer optical fiber (GI POF). Modal dispersion should be minimized to realize the high-speed data transmission in multimode type GI POE On the other hand, when the refractive index profile is optimized to reduce the modal dispersion, mode coupling, and differential mode attenuation come affect the bandwidth characteristic. In this paper, the maximum bandwidth of the GI POF is clarified by considering all important factors mentioned above, andideal design of fiber material and structure is also described. And, it is described that this high speed GI POF will be used in the future how.