I-GGG/SGGG/NGG Iigarnets zisetyenziselwa i-epitaxy engamanzi.I-SGGG subatrates yi-substrates ezinikeleyo yefilimu yemagneto-optical.Kwizixhobo zonxibelelwano lwe-optical, zifuna kakhulu ukusebenzisa i-1.3u kunye ne-1.5u yokuhlukanisa i-optical isolator, icandelo layo eliphambili yifilimu ye-YIG okanye ye-BIG. ibekwe kumhlaba wemagnethi.