略語大辞典 [Opt] 23 GI graded index (fiber) 屈折率分布型(光ファイバー).graded index (fiber); an optical fiber in which the refractive index of the core is in the form of a parabolic curve, decreasing toward the cladding; [Opt:L:C]. 丸善「略語大辞典」JLogosID : 11875948