OM3 10G Multimode Light-weight Optical Fiber Cable GYFTA Outdoor Fiber Optic Cable for Underground Duct
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The OM3 Optical Fiber GYFTA Underground Cable is a high-bandwidth, multi-mode stranded loose-tube outdoor communication cable engineered specifically for high-speed enterprise campus backbones, data centers, and localized metropolitan networks.
It combines an all-dielectric central strength member (FRP) with an aluminum moisture barrier (APL), making it highly effective for underground ducts, pipes, and utility trenches where severe electromagnetic interference (EMI), lightning risks, or stagnant groundwater are present.
| Code Letter | Structural Meaning | Specific Engineering Definition |
|---|---|---|
| G | Communication Core | Designates an outdoor communication cable intended for telecommunications networks, data transmission, or television routing. |
| Y | Polyethylene Sheath | Specifies that the outer protection jacket is extruded from high-density or medium-density Polyethylene (PE), offering UV resistance and low surface friction. |
| F | Non-Metallic Strength Member | Indicates a completely non-metallic central strength member, specifically utilizing an FRP (Fiber Reinforced Plastic) core instead of a traditional steel wire. |
| T | Gel-Filled Loose Tube | Defines the core layout where optical fibers float freely inside PBT loose buffer tubes filled with a moisture-resistant thixotropic compound (gel). |
| A | Aluminum Tape Armor (APL) | Identifies the inner armoring material as an Aluminum Polyethylene Laminate (APL) tape wrapped longitudinally around the core to serve as a moisture barrier. |
| Main Layer / Component | Structural Material | Comprehensive Detailed Description |
|---|---|---|
| 1. Optical Fibers | Single-mode G.652D / G657 / G655 or Multimode OM1 / OM2 / OM3 / OM4 | High-purity 250µm color-coded fibers providing ultra-low signal attenuation. Colored per standard sequences (e.g., TIA/EIA-598) for fast splicing identification. |
| 2. Loose Tubes | PBT loose tube | Tubes that hold up to 12 fibers each. The loose-tube architecture gives the fibers "excess length," allowing them to move freely without stress during tight corner bends or cable pulls. |
| 3. Tube Filling Compound | Thixotropic Waterproof Fiber Gel | A specialized compound filling the loose tubes. It dampens physical shocks, resists chemical aging (hydrolysis), and shields the fibers from any ambient dampness. |
| 4. Central Strength Member | FRP | A rigid, non-metallic rod located in the exact center of the cable. It absorbs the primary longitudinal tension applied during installation pulls and prevents axial contraction in freezing temperatures. |
| 5. Cable Core Matrix | SZ-Stranding Layer with Water-Blocking Compound | The loose tubes and structural fillers are twisted around the FRP core in a back-and-forth "SZ" pattern. The interstitial spaces are flooded with a 100% water-blocking grease to stop water from traveling down the length of the cable if breached. |
| 6. Inner Moisture Armor | APL Tape (Aluminum Polyethylene Laminate) | A layer of aluminum tape coated with a protective polymer layer, applied longitudinally over the core matrix. It serves as a continuous radial moisture barrier and adds lightweight crush resistance. |
| 7. Outer Sheath | Black PE | A rugged outer sheath extruded directly over the aluminum armor. Formulated with carbon black to provide total resistance to outdoor UV radiation, thermal cracking, and friction within plastic ducts. |
- Total immunity to electrical interference (EMI)
- Lightning strike protection
- Corrosion-resistant moisture barrier
- Lightweight construction with lower friction
- Inter-building campus backbones
- High-voltage co-location conduits
- Damp municipal pipe networks
- Enterprise and university campus backbones
- High-lightning vulnerability zones
- Long-run intramural conduit pulls
- Passive fiber optic network systems
Complies with Standard YD/T 1155-2001 as well as IEC 60794-1.
| Position | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| Color | Blue | Orange | Green | Brown | Grey | White |
| Position | 7 | 8 | 9 | 10 | 11 | 12 |
| Color | Red | Black | Yellow | Violet | Pink | Aqua |
| Fiber Count | Loose Tubes × Fibers per Tube | Outer Diameter | Cable Weight |
|---|---|---|---|
| 2 to 24 Cores | 2 to 4 Tubes × 6 Fibers | 10.0 mm ±5 mm | ~100 kg / km |
| 26 to 42 Cores | 5 to 6 Tubes × 6 Fibers | 10.5 mm ±5 mm | ~135 kg / km |
| 46 to 72 Cores | 6 Tubes × 12 Fibers | 11.5 mm ±5 mm | ~155 kg / km |
| 74 to 96 Cores | 8 Tubes × 12 Fibers | 13.0 mm ±5 mm | ~175 kg / km |
| 98 to 120 Cores | 10 Tubes × 12 Fibers | 14.5 mm ±5 mm | ~200 kg / km |
| 122 to 144 Cores | 12 Tubes × 12 Fibers | 15.5 mm | ~270 kg / km |
If you want to show your own brand logo on the goods, such as on the cable, package bag, label, or anywhere else, it is no problem. Our OEM and ODM service is always ready to do it.
According to standard export packing: carton box, wooden box, wooden pallet.
- International express such as UPS, TNT, DHL, etc.
- International air: CA, AA, EA, etc.
- By sea
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