GYTS光纜的(de)結構為(wei)將250μm光纖(xian)套(tao)入高(gao)模量材制成(cheng)(cheng)的(de)松(song)套(tao)管中(zhong)，松(song)套(tao)管內(nei)填(tian)充(chong)防水(shui)化合物(wu)。纜芯(xin)(xin)中(zhong)心為(wei)金(jin)屬加強芯(xin)(xin)（某(mou)些芯(xin)(xin)數(shu)GYTS光纜金(jin)屬加強芯(xin)(xin)外(wai)還需擠上(shang)一層聚(ju)乙烯(xi)（PE）以擴(kuo)大直徑）。松(song)套(tao)管（和填(tian)充(chong)繩(sheng)）圍繞中(zhong)心加強芯(xin)(xin)絞合成(cheng)(cheng)緊湊的(de)圓形(xing)纜芯(xin)(xin)，纜芯(xin)(xin)內(nei)的(de)縫隙填(tian)充(chong)阻水(shui)填(tian)充(chong)物(wu)，再(zai)由涂塑(su)鋼帶（PSP）縱包后擠制聚(ju)乙烯(xi)（PE）護套(tao)成(cheng)(cheng)纜。
