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GYTA53 光纜的結構是將 250μm 光纖套入高模量材料製成的松套管中，松套管內填充防水化合物。纜芯的中心是一根金屬加強芯，對於某些芯數的光纜來說，金屬加強芯外還需要擠上一層聚乙烯（PE）。松套管（和填充繩）圍繞中心加強芯絞合成緊湊和圓形的纜芯，纜芯內的縫隙充以阻水填充物。塗塑鋁帶（APL）縱包后擠一層聚乙烯內護套，雙面塗塑鋼帶（PSP）縱包后擠制聚乙烯護套成纜。

The fibers, 250μm, are positioned in a loose tube made of a high modulus plastic. The tubes are filled with a water-resistant filling compound. A steel wire, sometimes sheathed with polyethylene (PE) for cable with high fiber count, locates in the center of core as a metallic strength member. Tubes (and fillers) are stranded around the strength member into a compact and circular cable core. An Aluminum Polyethylene Laminate (APL) is applied around the cable core. which is filled with the filling compound to protect it from water ingress. Then the cable core is covered with a thin PE inner sheath. After the PSP is longitudinally applied over the inner sheath, the cable is completed with a PE outer sheath.
　

        · 具有很好的機械性能和溫度特性
        · Good mechanical and temperature performance

        · 松套管材料本身具有良好的耐水性能和較高的強度
        · High strength looes tube that is hydrolysis resistant

        · 管內充以特種油膏，對光纖進行了關鍵性保護
        · Special tube filling compound ensure a critical protection of fiber

        · 良好的抗壓性和柔軟性
        · Crush resistance and flexibility

        · 採用下列措施來確保光纜的防水性能：
        · The following measures are taken to ensure the cable watertight:

                - 單根鋼絲中心加強芯
                - Steel wire used as the central strength member

                - 松套管內填充特種防水化合物
                - Loose tube filling compound

                - 完全纜芯填充
                - 100% cable core filling

                - 塗塑鋁帶（APL）防潮層
                - APL moisture barrier

                - 雙面塗塑鋼帶（PSP）提高光纜的抗透潮能力
                - PSP enhancing moisture-proof

                - 良好的阻水材料防止光纜縱向滲水
                - Water-blocking material

        GYTY53 光纜符合 YD/T 901-2001 和 IEC 60794-1 標準
        GYTY53 cable complies with Standard YD/T 901-2001as well as IEC 60794-1.

·光學特性 Optical Characteristics