GJYXFHS / GJYXFHA Armored Duct Drop Fiber Optic Cable Bow-type

GJYXFHS/ GJYXFHA Armored Duct Drop Fiber Optic Cable Bow-type

Overview:

GJYXFHA/GJYXFHS armored duct drop (bow-type) fiber optic cables are designed for FTTH (Fiber to the Home) access networks. With a butterfly-shaped cable core (GJXFH drop cable), parallel strength members (FRP) on both sides, longitudinal aluminum/steel tape cladding, and an MDPE/HDPE outer sheath, they feature easy stripping, excellent tensile resistance, and moisture/water blocking properties, making them suitable for duct installation and short-distance direct burial.

Typical Structure of Armored Duct Bow-type Drop Cable (GJYXFHS/A):

The typical GJYXFHA/ GJYXFHS duct bow-type drop optical fiber cable is composed of one GJXFH cable in the middle and two Non-metallic strength members (FRP) on both sides, longitudinal wrapped by aluminum tape / steel tape and then PE sheath is extruded outside.

Middle GJXFH cable construction: the optical fiber unit is positioned in the center, two parallel FRP as strength members are placed at both sides, then a LSZH jacket.

•  Name & Standards:

• GJYXFHA: Non-metallic strength members + aluminum tape for moisture protection

• GJYXFHS: Non-metallic strength members + steel tape armoring
  

  Both belong to the "duct-use drop (bow/butterfly-type)" cable structure, compliant with relevant telecom fiber optic cable standards.

  
  

• Cross-Section Structure (From Inside to Outside):

  1. Central Butterfly Cable Core: 1–2 fibers (typically G.652D or G.657A optical fiber, optimized for low loss and bending resistance).

  2. Parallel Non-Metallic Strength Members: FRP (Fiberglass Reinforced Plastic) or KFRP (Kevlar-Reinforced FRP) on both sides of the core, providing mechanical support against tension and compression.

  3. Longitudinal Water-Blocking Tape: Wrapped around the core to prevent longitudinal water penetration.

  4. Longitudinal Armor Layer:

  
  

          GJYXFHA: Aluminum tape (enhances moisture resistance and electromagnetic shielding).

          GJYXFHS: Steel tape (significantly improves lateral pressure resistance and rodent protection).

      5. Outer Sheath:

          HDPE (High-Density Polyethylene): For outdoor use, offering weather resistance and UV protection.

          LSZH (Low Smoke Zero Halogen): For indoor/vertical shaft applications, meeting flame retardancy and low-              toxicity requirements.

GHYXFHS/ GJYXFHA Drop Cable

GJYXFHS Structure Diagram

Features:

• Easy Stripping & Splicing: The notched design of the butterfly core allows quick stripping of the sheath, simplifying fiber splicing or connector termination (reducing on-site construction time).

• Mechanical Performance:

• Parallel strength members ensure excellent tensile (short-term tensile force up to 2000 N) and compression resistance.

• Steel tape armoring (GJYXFHS) provides superior lateral pressure resistance (withstands 200 N/100 mm flattening force) and anti-rodent capability, suitable for harsh installation environments.

• Environmental Protection:

• Longitudinal aluminum/steel tape + water-blocking tape achieves comprehensive moisture and water blocking, preventing fiber damage from humidity or water intrusion.

• HDPE sheath resists aging and UV radiation; LSZH sheath minimizes smoke and toxic gas release in case of fire, ensuring safety in enclosed spaces.

• Typical Operating Parameters:

• Operating temperature: -20°C to +60°C

• Bending radius: ≥10D (dynamic) / ≥20D (static, D = cable outer diameter)

• Service life: ≥20 years (under standard operating conditions)

Applications:

• Duct Branch Cabling: Used for FTTH drop connections in inter-building ducts, residential community pipelines, basements, and vertical shafts (connecting backbone cables to building entrances).

• Short-Distance Direct Burial: GJYXFHS (with steel tape armoring) is preferred for short-distance direct burial scenarios (e.g., across small green areas or roads) or sections vulnerable to mechanical damage.

• Indoor-Outdoor Transition: Can be paired with self-supporting bow-type cables (e.g., GJYXFCH) to form an integrated "aerial → duct → in-home" cabling solution, adapting to diverse FTTH deployment needs.

Selection & Installation Tips:

• Selection Guidelines:

• Prioritize GJYXFHS for scenarios requiring strong mechanical protection (e.g., direct burial, rodent-prone areas).

• Choose GJYXFHA (preferably with LSZH sheath) for standard duct installation, indoor use, or environments emphasizing flame retardancy and low toxicity.

• Installation Precautions:

• Strictly adhere to bending radius requirements (≥10D dynamic / ≥20D static) to avoid fiber micro-bending loss.

• Clean ducts and apply lubricant before cable pulling to reduce friction damage.

• Remove residual water-blocking materials from the fiber surface before splicing to ensure connection quality.

• Secure strength members and seal cable terminals according to specifications to prevent moisture ingress.