GI POF was prepared using polymethyl methacrylate (PMMA) as core and clad,diphenyl sulfide(DPS) as the dopant. The refractive index profile of GI POF was measured using focusing method.

• 以聚甲基丙烯酸甲酯为芯皮层原料、苯硫醚为掺杂剂制备了GI POF,并通过聚焦法测得光纤折射率分布。