SELF SUPPORTING AERIAL APPLICATIONS(SM 12/24 FIBERS)
Cable Cross-section
Cable Identification
Each cable ends are sealed with heat shrinkable end caps to prevent
water ingress.
Fiber color code
| No. | 1 | 2 | 3 | 4 | 5 | 6 |
| Color | Blue | Orange | Green | Brown | Gray | White |
| No. | 7 | 8 | 9 | 10 | 11 | 12 |
| Color | Red | Black | Yellow | Violet | Pink | Aqua |
Loose tube (LT) & filler rod (FR) color code
Fiber count | Element no. |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 12 | LT | LT | FR | FR | FR | | | | | | | |
| 24 | LT | LT | LT | LT | FR | | | | | | | |
* “LT” means “Loose Tube”;
** “FR” means “Filler Rod”.
Cable Assembly & Dimensions
Fiber count | Max. fiber count per tube | Total unit count (LT + FR) | Loose tube | Messenger wire | Cable sheath thickness (nominal*) | Connector (Height*Width) | Overall diameter (nominal**) | Weight (approx.) |
| mm | mm | mm | mm | mm | kg/km |
| 12 | 6 | 2LT+3FR | 1.9 | 1.6*7 | 2.0 | 2.5*2.0 | 10.5*19.4 | 235 |
| 24 | 6 | 4LT+1FR | 1.9 | 1.6*7 | 2.0 | 2.5*2.0 | 10.5*19.4 | 235 |
* The nominal sheath thickness may have a tolerance with ±0.2mm.
* * The nominal overall diameter may have a tolerance with ±0.5mm.
Performance of Cabled Optical Fiber
The performance of cabled optical fiber (ITU-T Rec. G.652D)
| Item | Specification |
| Fiber type | Single mode |
| Fiber material | Doped silica |
Attenuation coefficient @ 1310 nm @ 1550 nm |
£ 0.36 dB/km £ 0.22 dB/km |
| Point discontinuity | £ 0.05 dB |
| Cable cut-off wavelength | £ 1260 nm |
| Zero-dispersion wavelength | 1302 ~ 1322nm |
| Zero-dispersion slope | £ 0.092 ps/(nm2.km) |
Chromatic dispersion @ 1288 ~ 1339 nm @ 1271 ~ 1360 nm @ 1550 nm @ 1625 nm |
£3.5 ps/(nm. km) £5.3 ps/(nm. km) £18 ps/(nm. km) £22 ps/(nm. km) |
| Mode field diameter @ 1310 nm | 9.2±0.4 um |
| Core / Clad concentricity error | £ 0.5 um |
| Cladding diameter | 125.0 ± 0.7um |
| Cladding non-circularity | £1.0% |
| Primary coating diameter | 245 ± 5 um |
| Proof test level | 100 kpsi (=0.69 Gpa), 1% |
Performance of Optical Fiber Cable
5.1 Cable bending radius: 15 x cable diameter (static)
25 x cable diameter (dynamic)
5.2 Application temperature range
| Operating temperature range | : -40oC to +70oC |
| Storage / Transport temperature range | : -40oC to +70oC |
| Installation temperature range | : -10oC to +50oC |
5.3 Mechanical & environmental performance test
| S/N | Item | Test Method | Acceptance Condition |
| 1 | Tensile Strength IEC 794-1-E1 | - Load: 5.0KN - Length of cable under load: 50 m -Load time: 1min | - Loss change £ 0.1 dB @1550 nm - No fiber break and no sheath damage. |
| 2 | Crush Test IEC 794-1-E3 | - Load: 1.0KN/100mm - Load time: ≥1min. | - Loss change £ 0.1 dB @1550 nm - No fiber break and no sheath damage. |
| 3 | Impact Resistance IEC 794-1-E4 | - Points of impact: 3 -Times of per point: 1 - Impact energy: 4.5 Nm - Radius of hammer head: 12.5mm | - Loss change £ 0.1 dB @1550 nm - No fiber break and no sheath damage. |
| 4 | Repeated Bending IEC 794-1-E6 | - Bending radius: 20 x cable diameter - Load: 150 N - Flexing rate: 3 sec/cycle - No. of cycle: 30 | - Loss change £ 0.1 dB @1550 nm - No fiber break and no sheath damage. |
| 5 | Torsion IEC 794-1-E7 | - Length: 1 m - Load: 150 N - Twist rate: 1 min/cycle - Twist angle: ±90° - No. of cycle: 10 | - Loss change £ 0.1 dB @1550 nm - No fiber break and no sheath damage. |
| 6 | Water Penetration Test IEC 794-1-F5B | - Height of water: 1 m - Sample length: 3 m - Test time: 24 hours | - No water shall have leaked from the opposite end of cable. |
| 7 | Temperature Cycling Test IEC 794-1-F1 | - Temperature step: +20oC→-40oC→+70oC →+20oC - Time per each step: 12 hrs - Number of cycle: 2 | - Loss change £ 0.05 dB/km@1550 nm - No fiber break and no sheath damage. |
| 8 | Compound Flow IEC 794-1-E14 | - Sample length: 30 cm - Temp: 70°C ± 2°C - Time: 24 hours | - No compound flow |
Packing
6.1 Each single cable length been wound on an iron stand-wooden
composite or pure wooden drum.
6.2 Standard drum length is 4000m with ±2%.
6.3 Covered by plastic buffer sheet.
6.4 Sealed by strong wooden battens.
6.5 At least 1m of cable inner end should be reserved for testing.
Note: The value “D” contain the seal dimension
| Cable Type | Drum length | D | d | B | b |
| GYFC8S | m | mm | mm | mm | mm |
| 12/24F | 4000 | 1440 | 760 | 1100 | 980 |
