Spring Optical Communication is one of the largest and best dielectric gel-filled flat drop cable manufacturers and suppliers with rich experience. Welcome to buy our high quality products or wholesale our customized dielectric gel-filled flat drop cable in stock with our factory. Also, free sample is also available if necessary.
High-Performance FTTH Drop Cable for Harsh Outdoor and Moisture-Prone Environments
Product Overview
The Dielectric Gel-filled Flat Drop Cable is designed for FTTH last-mile networks requiring enhanced moisture protection and long-term outdoor reliability.
Unlike dry-type cables, this model uses a gel-filled loose tube structure, providing superior water blocking performance in humid, rainy, or coastal environments.
With a fully dielectric design and robust flat construction, this cable ensures stable optical transmission while simplifying installation in aerial, duct, and direct buried applications.
It is an ideal solution for operators who require maximum environmental protection and long service life in outdoor fiber networks.
Key Features
Gel-filled Water Blocking Technology
The loose tube is filled with high-quality gel compound to prevent water ingress:
Excellent long-term moisture resistance
Ideal for harsh outdoor environments
Enhanced fiber protection under temperature changes
Fully Dielectric Structure
No metallic elements are used:
No grounding required
Safe for electrical environments
Reduced lightning risk
High Mechanical Strength Design
Two parallel G-FRP rods provide:
Strong tensile resistance
Excellent crush protection
Stable installation performance
UV Resistant HDPE Jacket
Protects against:
UV radiation
Abrasion
Fungus
Environmental aging
Applications
This cable is widely used in:
FTTH outdoor access networks
Coastal and high-humidity regions
Long-term aerial or buried installations
Telecom operator backbone access sections
Rural broadband infrastructure
Cable Structure Description
The cable structure includes:
Central loose tube filled with gel compound
Two parallel G-FRP strength members
HDPE flat outer sheath for environmental protection
The gel filling ensures long-term fiber protection against water penetration, making it highly suitable for unstable or moisture-rich environments.
Advantages for FTTH Networks
Compared with dry-type drop cables:
Superior water resistance
Longer service life in harsh environments
Better performance stability in temperature variation
Reduced risk of fiber degradation
Ideal for critical outdoor infrastructure
Applications Scenarios
Coastal FTTH Networks
Resistant to salt and humidity.
Underground and Direct Burial Projects
Provides long-term moisture protection.
Telecom Operator Outdoor Networks
Ensures stable transmission over time.
Rural Long-Distance Fiber Deployment
Ideal for exposed environments.
FAQ
Q: What is gel-filled fiber optic cable used for?
A: It is used in outdoor FTTH environments requiring strong moisture protection.
Q: Is gel-filled cable better than dry type?
A: Yes, for harsh environments, gel-filled provides better long-term water resistance.
Q: Can it be used for aerial installation?
A: Yes, it supports aerial, duct, and direct buried installation.
Why Choose Us
We provide:
Stable gel-filled production technology
Strict IEC standard testing
OEM/ODM customization
Fast global shipping
Full FTTH drop cable portfolio
Need a high-reliability gel-filled FTTH drop cable?
Contact us for datasheets, samples, and pricing support.
Hot Tags: dielectric gel-filled flat drop cable
General Characteristics
| Item | Specification |
|---|---|
| Fiber Count | 1 / 2 / 4 / 6 / 8 / 12 fibers (up to 24 optional) |
| Fiber Type | G652D / G657A |
| Loose Tube Material | PBT |
| Water Blocking | Gel-filled |
| Strength Member | G-FRP (2 parallel rods) |
| FRP Diameter | 1.6 ± 0.1 mm |
| Outer Sheath Material | HDPE |
| Cable Dimensions | 4.5 × 8.1 mm ± 0.3 |
| Net Weight | 33 kg/km |
Optical Fiber Characteristics
| Item | Specification |
|---|---|
| Attenuation @1310nm | ≤ 0.36 dB/km |
| Attenuation @1550nm | ≤ 0.22 dB/km |
| Cut-off Wavelength | ≤ 1260 nm |
| Zero Dispersion Wavelength | 1300–1324 nm |
| Mode Field Diameter | 9.2 ± 0.4 μm @1310nm |
| Cladding Diameter | 125 ± 1 μm |
| Coating Diameter | 245 ± 5 μm |
| Proof Test | ≥ 0.69 GPa |
Mechanical & Environmental Performance
| Test Item | Standard | Requirement |
|---|---|---|
| Tensile Strength (Long Term) | IEC 60794-1-E1 | 400 N |
| Tensile Strength (Short Term) | IEC 60794-1-E1 | 1350 N |
| Crush Resistance | IEC 60794-1-E3 | 3000 N/100mm |
| Impact Resistance | IEC 60794-1-E4 | No damage |
| Repeated Bending | IEC 60794-1-E6 | No attenuation change |
| Torsion Test | IEC 60794-1-E7 | ±180° |
| Water Penetration | IEC 60794-1-F5B | No leakage |
| Temperature Cycling | IEC 60794-1-F1 | Stable performance |
Temperature Range
Operating: -40°C to +60°C
Storage: -50°C to +70°C
Installation: -20°C to +60°C
Minimum Bending Radius
Static: ≥ 10 × cable diameter
Dynamic: ≥ 20 × cable diameter
Fiber Identification Color Code
| Fiber No. | Color |
|---|---|
| 1 | Blue |
| 2 | Orange |
| 3 | Green |
| 4 | Brown |
| 5 | Slate |
| 6 | Natural |
| 7 | Red |
| 8 | Black |
| 9 | Yellow |
| 10 | Violet |
| 11 | Pink |
| 12 | Aqua |
Compliance & Standards
Telcordia GR-20
IEC 60794 series
ANSI/ICEA S-87-640
Packaging & Marking
Wooden drum packaging
Single continuous length per drum
Both ends sealed
Minimum 3m reserved length per end
Marking includes:
Brand
Cable type
Fiber count
Manufacturing year
Length marking
