Description
OMC’s Unitube No-armored Cable (GYFXTY) is a kind of outdoor no-armored cable, usually with a maximum capacity of 12F. So 1-12pcs of single-mode fibers are positioned in the loose tube which is made of PBT materials and filled with filling compound. The loose tube is covered with a layer of water-blocking tape. Finally, a durable polyethylene (PE) jacket is added to create a round cable cross-section and lend added protection to the cable core. At the same time, in order to offer high tensile strength, two strand steel wires are embedded in the PE jacket.
Standard color of fiber and tube
The color code of the individual fibers, shall be in accordance with the table as below:
| No. | 1 | 2 | 3 | 4 | 5 | 6 |
| Color | Blue | Orange | Green | Brown | Slate | White |
| No. | 7 | 8 | 9 | 10 | 11 | 12 |
| Color | Red | Black | Yellow | Violet | Pink | Aqua |
Cable Structure parameter
| Items | Description | |
| Number of fiber | 1-12F | |
| Cable diameter | 6.1±0.3mm | |
| Fiber | type | G65A2 |
| Loose tube Strength member | material | PBT 2.0mm OD |
| material | Steel wire 0.4*3-0.86mm | |
| Outer sheath | material | PE |
| Jacket Dielectric Strength | The outer jacket incorporates two steel strength elements laid in parallel can withstand a spark test with respect to the steel strength elements at a voltage of 8 kv without any breakdown | |
| Thickness | 1.9±0.1mm | |
| color | Black with one yellow stripe | |
Mechanical & Environmental Performance
| Item | Contents | Value |
| Max. tensile load | Short term | 1200N fiber strain≤0.6% |
| Long term | 300N | |
| Max. crush resistance | Short term | 1000N/100mm |
| Long term | 300N/100mm | |
| Min. bending radius | Installation | 20 x cable diameter |
| Operation | 10 x cable diameter | |
| Temperature range | Operation | -40℃ ~ +70℃ |
| Installation | -20℃ ~ +60℃ | |
| Storage/transportation | -40℃ ~ +70℃ |
Optical fiber technical parameters-SMF
| Item | Unit | Specification | |
| G. 657A2 | |||
| Mode field diameter | 1310nm | nm | 9.2 ± 0.4 |
| 1550nm | nm | 10.4 ± 0.5 | |
| Cladding diameter | nm | 125.0 ± 0.7 | |
| Cladding non-circularity | % | ≤1.0 | |
| Core concentricity error | nm | ≤0.6 | |
| Coating diameter | nm | 242 ± 7 | |
| Coating/cladding concentricity error | nm | ≤12 | |
| Cable cut-off wavelength λcc | nm | ≤ 1260 | |
| Attenuation | 1310nm | dB/km | ≤0.35 |
| 1550nm | dB/km | ≤0.21 | |
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