gyhty 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油膏后挤制聚乙烯内护套，再包上一层芳纶后挤制聚乙烯外护套成缆。
the fibers,  250μm, are positioned in a loose tube made of a high modulus plastic. the tubes are filled with a water-resistant fillingcompound. 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 circularcore. after the cable core is filled with filling compound, it is covered with thin pe (polyethylene) inner sheath. then, a layer of aramid yarn is applied as additional strength member and the cableis completed with a polyethylene (pe) outer 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
· 芳纶加强元件使光缆具有更强的抗拉性能· aramid yarn strength member ensures good performance of tensile strength
· 松套管材料本身具有良好的耐水性能和较高的强度· high strength loose 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
gyhty 光缆符合 yd/t 901-2001 和 iec 60794-1 标准gyhty cable complies with standard yd/t 901-2001as well as iec 60794-1.
·光学特性 optical characteristics
g.652
g.655
50/125μm
62.5/125μm
衰减attenuation
(+20℃)
@850nm
≤3.0 db/km
≤3.0 db/km
@1300nm
≤1.0 db/km
≤1.0 db/km
@1310nm
≤0.36 db/km
≤0.40 db/km
@1550nm
≤0.22 db/km
≤0.23db/km
带宽(a级)
bandwidth (class a)
@850nm
≥500 mhz·km
≥200 mhz·km
@1300nm
≥1000 mhz·km
≥600 mhz·km
数值孔径numerical aperture
0.200±0.015na
0.275±0.015na
光缆截止波长cable cut-off wavelength λcc
≤1260nm
≤1480nm
·结构参数 technical parameters
光缆型号cable type
光纤数fiber count
套管数
tubes
填充绳数fillers
光缆直径
cable diameter
mm
光缆重量cable weight kg/km
允许拉伸力
tensile strength
长期/短期
long/short term n
允许压扁力crush resistance
长期/短期
long/short term
n/100mm
弯曲半径
bending radius
静态/动态
static/dynamic
mm
gyhty-2~6芯
2~6
1
5
11.0
100
600/1500
300/1000
10d/20d
gyhty-8~12芯
8~12
2
4
11.0
100
600/1500
300/1000
10d/20d
gyhty-14~18芯
14~18
3
3
11.0
100
600/1500
300/1000
10d/20d
gyhty -20~24芯
20~24
4
2
11.0
100
600/1500
300/1000
10d/20d
gyhty-26~30芯
26~30
5
1
11.0
100
600/1500
300/1000
10d/20d
gyhty-32~36芯
32~36
6
0
11.0
100
600/1500
300/1000
10d/20d
储存、使用温度: -40℃ 至 + 70℃storage/operating temperature : -40℃ to + 70℃

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深圳市长飞通信有限公司
刘涵
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