A 2-core butterfly drop cable is a flat, LSZH-sheathed fiber optic cable with two G.657A1/A2 singlemode fibers and FRP strength members, ideal for FTTH installations.

Cable Structure and Specifications

• Fiber Type: Singlemode G.657A1 or G.657A2, designed for small bending radii, reducing attenuation in tight spaces .
• Cores: 2 optical fibers positioned centrally within the cable.
• Strength Members: Two parallel Fiber Reinforced Plastic (FRP) rods on either side of the fiber core provide mechanical strength without using metal, ensuring safety and lightning protection .
• Sheath: LSZH (Low Smoke Zero Halogen) jacket, flame-resistant and suitable for indoor use .
• Cable Shape: Butterfly flat or figure-8 design, which allows easy handling, installation, and direct cabling to end users .
• Dimensions: Typically 2x3 mm for the butterfly flat design, compact for indoor routing .
• Performance: Low insertion loss (≤0.2–0.3 dB at 1550 nm) and high durability under bending and tensile stress .

Applications

• FTTH Installations: Direct connection from the access network to homes or offices.
• Indoor Cabling: Suitable for routing inside buildings due to its flexible, non-metallic design.
• Access Networks: Ideal for short-distance drop connections where small bending radius is required.

Local Availability in Malta

• Conversa is a leading supplier of networking and fiber optic products in Malta, offering consultation, installation, and certification services for FTTH networks .
• They provide a range of fiber optic cables, including 2-core butterfly drop cables, and can assist with overhead or indoor installations.

Installation Considerations

• Avoid sharp bends beyond the minimum design radius (typically 7.5 mm for G.657A2) to prevent fiber breakage .
• Use FRP strength members to maintain safety and prevent electrical hazards.
• LSZH sheath ensures compliance with fire safety standards in indoor environments. This type of 2-core butterfly drop cable is widely used in Malta for residential and small business FTTH deployments, offering high bandwidth, flexibility, and safe installation.