The Loose-tube Stranded Unarmored Optical Cable (GYTA) is designed for reliable optical fiber transmission in telecommunications networks. It places 250 μm optical fibers inside high-modulus loose tubes filled with water-blocking compound. The tubes and filler rods are stranded around a central metallic strength member to form a compact, round cable core. Coated aluminum tape (APL) is applied longitudinally, followed by a polyethylene (PE) outer sheath for moisture protection and environmental resistance.
Product Features
- Reliable Mechanical Performance: Designed to provide stable mechanical properties and temperature performance.
- High-Strength Loose Tubes: Loose-tube materials offer good hydrolysis resistance and high strength.
- Fiber Protection: Special water-blocking jelly inside the tubes helps protect optical fibers.
- Stable Cable Structure: The stranded core design helps prevent loose-tube shrinkage.
- Moisture Protection: Longitudinally applied coated aluminum tape provides a moisture barrier.
- UV-Resistant Sheath: The PE outer sheath offers good resistance to ultraviolet exposure.
Applications
- Telecommunications backbone networks
- Outdoor optical fiber communication systems
- Access and metropolitan area networks
- Optical transmission infrastructure requiring unarmored cable construction
Optical Fiber Parameters
| Fiber Type | Attenuation | Bandwidth | Numerical Aperture | Cable Cut-off Wavelength |
| G.652 | 1310 nm: ≤0.36 dB/km 1550 nm: ≤0.22 dB/km |
— | — | ≤1260 nm |
| G.655 | 1310 nm: ≤0.40 dB/km 1550 nm: ≤0.23 dB/km |
— | — | ≤1450 nm |
| 50/125 μm Multimode | 850 nm: ≤3.3 dB/km 1300 nm: ≤1.2 dB/km |
850 nm: ≥500 MHz·km 1300 nm: ≥500 MHz·km |
0.200 ± 0.015 | — |
| 62.5/125 μm Multimode | 850 nm: ≤3.5 dB/km 1300 nm: ≤1.2 dB/km |
850 nm: ≥200 MHz·km 1300 nm: ≥500 MHz·km |
0.275 ± 0.015 | — |
Cable Specifications
| Cable Model | Fiber Count | Tube Count | Filler Rod Count | Reference Weight (kg/km) | Tensile Load, Long/Short Term (N) | Crush Load, Long/Short Term (N/100 mm) | Bend Radius, Static/Dynamic |
| GYTA-2~6Xn | 2–6 | 1 | 4 | 76 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-8~12Xn | 8–12 | 2 | 3 | 76 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-14~18Xn | 14–18 | 3 | 2 | 76 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-20~24Xn | 20–24 | 4 | 1 | 76 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-26~30Xn | 26–30 | 5 | 0 | 76 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-32~36Xn | 32–36 | 6 | 0 | 85 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-38~48Xn | 38–48 | 4 | 1 | 90 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-50~60Xn | 50–60 | 5 | 0 | 90 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-62~72Xn | 62–72 | 6 | 0 | 113 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-74~84Xn | 74–84 | 7 | 1 | 136 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-86~96Xn | 86–96 | 8 | 0 | 136 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-98~108Xn | 98–108 | 9 | 1 | 163 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-110~120Xn | 110–120 | 10 | 0 | 163 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-122~132Xn | 122–132 | 11 | 1 | 190 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-134~144Xn | 134–144 | 12 | 0 | 190 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-146~216Xn | 146–216 | 13–18 | 5–0 | 190 | 600/1500 | 300/1000 | 10D/20D |
| GYTA-288Xn | 288 | 24 | 0 | 239 | 600/1500 | 300/1000 | 10D/20D |
Note: D represents the cable's outside diameter. Specifications are reference values; confirm the required fiber type, fiber count, and installation conditions when placing an order.
Customization and Support
Fiber type, fiber count, and cable configuration can be selected according to project requirements. Contact our team to discuss specifications and suitability for your optical network deployment.
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