1.1 Other technical requirements not specified in this specification shall meet the requirements of ITU-T and IEC recommendations and Chinese national standards and communication industry standards.
1.2 The ITU-T, IEC recommendations and Chinese national standards and communication industry standards not dated in this specification are used in the latest version.
2,Optical fiber index after the cable formation
||1310nmThe wavelength attenuation≤0.38dB/km
|1550nmThe wavelength attenuation≤0.24dB/km
Polarization mode dispersion
|In1550ｎｍSingle-disc polarization mode dispersion coefficient of wavelength fiber optic cable:≤0.20ｐｓ／；
|The polarization mode dispersion coefficient in the 1550nm wavelength optical cable link (20 disc optical cable) must be satisfied after the optical fiber cable formation≤0.10ｐｓ／；Q=0.01%.
GYFDTZY configuration parameter
|Number of cores per tube
|Refer to the outer diameter(mm)
|Outer diameter of parallel FRP reinforcing parts
|FRP Outer edge sheath thickness(mm)
|Optical cable reference outer diameter (mm)
|Optical cable reference weight (kg/km)
||Transport storage temperature
4,Mechanical test methods and acceptance standards for optical cable
(1)Test method: GB / T 7424.2-E1, Tensile
(2) Test conditions: Cuck diameter: not less than 30 times the outer diameter of the optical cable. Allowed tension: see optical cable allowable tension table. Length of the optical cable used for the test: not less than 50 meters. Tensile rate: 10mm / min. Maximum pull time: 1 minute.
No obvious additional attenuation and strain shall not be greater than 0.2% under long-term allowable tensile force, the additional attenuation shall be no greater than 0.15dB and strain no greater than 0.6%, the fiber shall have no obvious additional attenuation and no obvious strain, the residual strain of optical cable shall not be greater than 0.08%, and the sheath shall be cracked without visual force.
Optical cable allowable tension meter
|Optical cable type
(1)Test method: GB / T 7424.2-E3 flattening ".
(2) Test conditions: the allowable side pressure gauge of the optical cable.
Duration: 1 minute.
- acceptance requirement:There shall be no obvious additional attenuation under long-term allowable flattening force; the additional attenuation under temporary flattening force shall not be greater than 0.1dB. The fiber shall be obvious after this pressure removal, and the sheath shall be cracked without visibility.
Optical cable allowable side pressure gauge
|Optical cable type
||Allow side pressure(N/100mm)
4.3 Flame resistance
The outer jacket uses a low-smoke halogen-free flame retardant jacket. Cable flame retardant performance of IEC60332-1-2, single vertical combustion.
5,Cable structure diagram
Note: The schematic diagram is for reference only.
5.1 Identification of optical fibers in optical fiber bands Complete chromatography was used and specified in Table 1.Table 1 Full chromatographic optical fiber identification rules
5.2 Identification of fiber optic bands
For the optical fiber band, it shall be identified by printing on the optical fiber band, with 1,02,03,04..., no more than 20cm apart. Where the number of fiber strips in a single loose sleeve exceeds two, the numbered adjacent strips shall be stacked adjacent