Optical / Fiber parameters

• Core type: Single-mode (e.g., fibre count = 2) — suitable for long-distance, high-bandwidth links.

• Fibre standard: e.g., ITU-T G.652D or G.657A1/A2.

• Attenuation / loss: For example, ≤ 0.4 dB/km @1310 nm, ≤ 0.3 dB/km @1550 nm for high-grade OS2 outdoor 2-core SM.

• Mode-field diameter, cladding diameter, etc: e.g., for G.652D: Mode Field Diameter @1550 nm ~10.4 ±0.5 µm; cladding diameter 125 ±1 µm.

• Bending loss / bend radius: For example G.657A2 can allow 10 turns on a 15 mm mandrel with little loss.

Mechanical / Jacket / Cable parameters

• Number of cores: 2 optical fibres.

• Jacket/outer diameter: examples: ~4.5 mm OD for indoor FTTH 2-core. Another example: 3 mm diameter for outdoor flat 2-core cable.

• Jacket material: e.g., HDPE (for outdoor), LSZH (Low Smoke Zero Halogen) in many drop cables.

• Strength members: For outdoor 2-core drop cable you may have steel wire, FRP (fibre reinforced plastic) strength member.

• Operating temperature range: e.g., –40 °C to +60 °C for some outdoor versions.

• Mechanical specs: Tensile strength, crush resistance, minimum bend radius: example: 10D short-term, 20D long-term where D = cable diameter.

  • Fibre count: 2 cores (single-mode)

  • Fibre standard: ITU-T G.657A2 / G.652D

  • Core / cladding diameter: 9 µm / 125 µm (typical)

  • Attenuation: ≤ 0.4 dB/km @1310 nm, ≤ 0.3 dB/km @1550 nm

  • Jacket diameter: ~4.5 mm (indoor) or ~3.0 mm (flat outdoor drop)

  • Jacket material: LSZH (indoor) or HDPE/UV-resistant (outdoor)

  • Strength member: Steel wire or FRP

  • Operating temperature: –40 °C to +60 °C

  • Minimum bend radius: Short term 10×D, Long term 20×D

  • Application: FTTH, indoor/outdoor drop, telecom networks