层绞式非金属加强芯非铠裝光缆（GYFTY）

·  产品描述 Description

GYFTY 光缆的结构是将 250μm 光纤套入高模量材料制成的松套管中，松套管内填充防水化合物。缆芯的中心是一根玻璃纤维增强塑料（FRP），松套管（和填充绳）围绕中心加强芯绞合成紧凑和圆形的缆芯，缆芯内的缝隙充以阻水填充物。 缆芯外挤上一层聚乙烯内护套成缆。

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 Fiber Reinforced Plastic (FRP) locates in the center of core as a non-metallic strength member. The tubes (and fillers) are stranded around the strength member into a compact and circular core. After the cable core is filled with the filling compound to protect it from water ingress, the cable is completed with a PE sheath.

·产品特点 Characteristics

· 具有很好的机械性能和温度特性
· Good mechanical and temperature performance

· 松套管材料本身具有良好的耐水性能和较高的强度
· High strength looes tube that is hydrolysis resistant

· 管内充以特种油膏，对光纤进行了关键性保护
· Special tube filling compound ensure a critical protection of fiber

· 良好的抗压性和柔软性
· Crush resistance and flexibility

· 采用下列措施来确保光缆的防水性能：
· The following measures are taken to ensure the cable watertight:

- 单根非金属中心加强芯
- Single Fiber Reinforced Plastic as the central strength member

- 松套管内填充特种防水化合物
- Loose tube filling compound

- 完全缆芯填充
- 100% cable core filling

·产品标准 Standards

GYFTY 光缆符合 YD/T 901-2001 和 IEC 60794-1 标准
GYFTY cable complies with Standard YD/T 901-2001as well as IEC 60794-1.

·光学特性 Optical Characteristics