Category Archives: Air Blown Micro Cable

Multi-Loose Tube Fiber Cable

General

  • This specification covers the requirements for the supply of single-mode optical fiber cables.
  • The single mode optical fiber cable comply with the requirements of this specification and generally meet any latest relevant ITU-T Recommendation G.652D YOFC brand

Fiber characteristics

Geometric characteristics

Item Item
Mode field diameter At 1310nm 9.2±0.4μm
Cladding diameter 125±1μm
Core concentricity error ≤0.6μm
Cladding non-circularity ≤1.0%
Cut-off wavelength (λcc) (for cable) ≤1260nm
Cut-off wavelength (λc) (for fiber) 1180nm~1330nm
Primary coating diameter (Not included color layer) 245±10μm
(Included color layer) 250±15μm
Coating-cladding concentricity error ≤12.5μm
Fiber curl radius ≥4m

Transmission characteristics

Item Item
Attenuation At 1310nm ≤0.34dB/km
At 1550nm ≤0.19dB/km
Macro bending loss Φ=60mm, 100turns at 1550nm ≤0.1dB
Chromatic dispersion Within 1288~1339nm ≤3.5ps/nm·km
At 1550nm ≤18ps/nm·km
Zero dispersion wavelength Zero dispersion wavelength
Zero dispersion slope Zero dispersion slope

Optical Fiber Cable

Cross section

Technical Characteristics

The unique extruding technology provides the fibers in the tube with good flexibility and bending endurance

  • The unique fiber excess length control method provides the cable with excellent mechanical and environmental properties
  • Multiple water blocking material filling provides dual water blocking function

Construction:

  1. Outer sheath (HDPE, Black)
  2. Loose tube
  3. Fiber and jelly
  4. Central strength member (FRP)
  5. Water blocking yarn
  6. Rip cord*1

Fiber count 24F 48F 72F 96F 144F
Model Number TGT-MY2H1-24 TGT-MY2H1-48 TGT-MY2H1-72 TGT-MY2H1-96 TGT-MY2H1-144
No of loose tube / filler 2/4 4/2 6/0 8/0 12/0
Fiber No. per tube 12
Loose tube diameter 1.5±0.1mm
Central strength member diameter 1.6±0.1mm 1.6±0.1mm
Outer sheath thickness Nominal 0.45mm Nominal 0.45mm
Cable OD 5.6mm Cable OD 5.6mm
Cable weight 26kg/km Cable weight 26kg/km
Operation temperature range -20 deg C to + 70 deg C
Installation temperature range -10 deg C to + 50 deg C
Transport and storage temperature range -20 deg C to + 70 deg C
Tensile load 550N
Crush resistance: short/long term(N/10cm) Short term:500;Long term:200
Minimal installation bending radius 20 x OD
Minimal operation bending radius 10 x OD

Color code scheme

Fiber color blue orange green brown grey white red black yellow violet pink aqua
Tube color blue orange green brown grey white red black yellow violet pink aqua

TEST LIST

Tension Loading Test

Test Standard IEC 60794-1-2 E1
Sample length No less than 50 meters
Load tension load
Duration time 1 minute
Test result Additional attenuation:≤0.1dB after test
No damage to outer jacket and inner elements

Crush/Compression Test

Test Standard IEC 60794-1-2 E3
Load Max. crush load
Duration time 1 minute
Test number 3
Test result Additional attenuation:≤0.1dB after test
No damage to outer jacket and inner elements

Impact Resistance Test

Test Standard IEC 60794-1-2 E4
Impact energy 1J
Radius 300mm
Number of impacts One in 3 different places spaced not less than 500 mm apart
Test result No damage to outer jacket and inner elements

Torsion/Twist Test   

Test Standard IEC 60794-1-2 E7
Sample length 1m
Angles ±180 degree
cycles 10
Test result Additional attenuation:≤0.1dB after test
No damage to outer jacket and inner elements

Bend Test      

Test Standard IEC 60794-1-2 E11A
Mandrel radius 20 X diameter of cable
Turn number 4
Number of cycles 3
Test result No damage to outer jacket and inner elements

Repeated Bending Test

Test Standard IEC 60794-1-2 E6
Bending radius 20 X diameter of cable
Cycles 25 cycles
Test result Additional attenuation:≤0.1dB after test
No damage to outer jacket and inner elements

Temperature cycling Test    

Test Standard IEC 60794-1-2 F1
Temperature step +20℃ →-20℃ →+70℃→20℃
Time per each step 12 hrs
Cycles 2
Test result Attenuation variation for reference value (the attenuation to be measured before test at +20±3℃) ≤ 0.15dB/km @1550nm and reversible

Water penetration Test   

Test Standard IEC 60794-1-2 F5
Height of water column 1m
Sample length 3m
Test time 24 hrs
Test result No water leakage from the opposite of the sample

PACKING AND DRUM

Our cables are coiled on wooden drum. During transportation, right tools should be used to avoid damaging the package and to handle with ease. Cables should be protected from moisture; kept away from high temperature and fire sparks; protected from over bending and crushing; protected from mechanical stress and damage.

Wooden Drum
(The barrel core is a metal structure)

Note: The drum size & cable weight as above is estimated and final size & weight shall be confirmed before shipment.

The inner end and the outer end of cable are equipped with heat shrinkable end cap and the drum protected with strong wooden batten.

Part No Core Type No of Cores OD-mm
TGT-MY2H1-24 YOFC-G652D 24 5.6±0.2
TGT-MY2H1-48 YOFC-G652D 48 5.6±0.2
TGT-MY2H1-72 YOFC-G652D 72 5.6±0.2
TGT-MY2H1-96 YOFC-G652D 96 7±0.2
TGT-MY2H1-144 YOFC-G652D 144 7.8±0.2

Single-Loose Tube Fiber Cable

General

This specification presents the characteristics of air-blown cable. The cables and corresponding fiber optics are all compatible with latest relevant ITU recommendation for G.652D. The cable structure is well-designed to be installed inside micro ducts, thanks to the improved sheath used as the cable coating.

Fiber characteristics

Optics Specifications
Attenuation(dB/km) @1310nm ≤0.34db/km
@1383nm (after hydrogen aging) ≤0.32db/km
@1550nm ≤0.20db/km
@1625nm ≤0.24db/km
Dispersion @1285nm~1340nm -3.0~3.0ps/(nm*km)
@1550nm ≤18ps/(nm*km)
@1625nm ≤22ps/(nm*km)
Zero-Dispersion wavelength 1300~1324nm
Zero-Dispersion slope ≤0.092ps/(nm2*km)
Mode field diameter @ 1310nm 9.2±0.4μm
Mode field diameter @ 1550nm 10.4±0.8μm
PMD Max. value for fiber on the reel 0.2ps/km 1/2
Max. Designed value for link 0.08ps/km 1/2
Cable cutoff wavelength cc ≤1260nm
Effective group index(Neff)@1310nm 1.4675
Effective group index(Neff)@1550nm 1.4680
Macro-bend loss(Φ60mm,100 turns)@1550nm ≤0.05db

Back scatter characteristic (@1310nm&1550nm)
Point discontinuity ≤0.05db
Attenuation uniformity ≤0.05db/km
Attenuation coefficient difference for bi-directional measurement ≤0.05db/km

Geometrical characteristics
Cladding diameter 125±1μm
Cladding non-circularity ≤1%
Core/cladding concentricity error ≤0.4μm
Fiber diameter with coating(uncolored) 245±5μm
Cladding/coating concentricity error ≤12.0μm
Curl ≥4m

Mechanical characteristic
Proof test 0.69GPa
Coating strip force(typical value) 1.4N
Dynamic stress corrosion susceptibility parameter(typical value) ≥20

Environmental characteristics (@1310nm&1550nm)
Temperature induced attenuation(-60~+85℃) ≤0.5dB/km
Dry heat induced attenuation(85±2℃,30days) ≤0.5dB/km
Water immersion induced attenuation(23±2℃,30days) ≤0.5dB/km
Damp heat induced attenuation(85±2℃,RH85%,30days) ≤0.5dB/km

OPTICAL FIBER CABLE

Cross section

No. of cable 6 12 24
Fiber Model YOFC G 652D
Loose Tube Material PBT
Diameter (±0.1) mm 1.6 2.4
Thickness (±0.03) mm 0.2 0.35
Strength Member (Material) Aramid Yarn
Low Friction Material HDPE
Thickness (±0.1) mm 0.3 0.5
Cable Diameter (±5%) mm 2.3 3.0
Cable Weight (±10%) kg/km 5.0 8.0
Attenuation 1310nm ≤0.36dB/ km
1550nm ≤0.22dB/ km
Min. bending Without Tension 10.0×Cable-φ
Under Maximum 20.0×Cable-φ
Temperature range (°C) Tension -20~+60
Transport & Storage -40~+70
Operation -40~+70

The fibres shall be marked by a coloured coating with 12 different colors following the standard EIA/TIA598 as below: (Fiber cores with more than 12 cores are identified by dots.)

1 2 3 4 5 6 7 8 9 10 11 12
Blue Orange Green Brown Grey White Red Nature Yellow Violet Pink Aqua
13 14 15 16 17 18 19 20 21 22 23 24
Blue Orange Green Brown Grey White Red Black Yellow Violet Pink Aqua

Performance

NO ITEM TEST METHOD SPECIFICATION
1 Tensile performance IEC60794-1-21-E1 -Short-term load:20N Loss change ≤ 0.10 dB@1550 nm (after test) – Fiber strain ≤ 0.60 % – No sheath damage
2 Crush test IEC60794-1-21-E3 – Time: 5 minute Loss change ≤ 0.10 dB@1550 nm (during test) – No sheath damage
3 Repeated bending IEC60794-1-21-E6 – Bending radius.: 20 × D – Load: 25N – Flexing rate: 2sec/cycle – No. of cycle: 25 – No fiber break – No sheath damage
4 Water penetration IEC60794-1-22-F5 – Height of water: 1m – Sample length: 3 m – Time: 24 hr – No drip through the cable core assembly
5 Twist IEC60794-1-21-E7 – Length: 1 m – Load: 40N – Twist rate: ≤60sec/cycle – Twist angle: ±180° – No. of cycle: 5 Loss change ≤ 0.10 dB@1550 nm (during test) – No sheath damage
6 Temperature Cycling IEC60794-1-22-F1 – Temperature step: +20oC→-20oC→+70oC→+20oC – Number of cycle: 2 turns – Time per each step: 12 hrs – Loss change ≤ 0.15dB/ km@1550 nm (during test) – Loss change ≤ 0.05dB/ km@1550 nm (after test) – No sheath damage

D*: Cable diameter

SHEATH MARKING

Manufacturer Cable type Manufacturing year ID Length marking in feet or meter.

PACKING AND DRUM

The cables are packed in carton, coiled on Bakelite & Fumigated wooden drum. During transportation, right tools should be used to avoid damaging the package and to handle with ease. Cables should be protected from moisture; kept away from high temperature and fire sparks; protected from over bending and crushing; protected from mechanical stress and damage. Packing length: 2km/reel-4km/reel.

ORDERING INFORMATION

Part No Core Type No of Cores OD-mm
TGT-MY2L1-06 YOFC-G652D 6 2.3 ± 0.2
TGT-MY2L1-12 YOFC-G652D 12 2.3 ± 0.2
TGT-MY2L1-24 YOFC-G652D 24 3.0 ± 0.2