A non-armoured single-tube optical cable for duct and underground conduit. The fibres sit in a gel-filled loose tube to stop water getting in and travelling along the cable, under a black UV- and water-resistant polyethylene jacket. Two embedded strength members (FRP for the all-dielectric GYFXY, metallic wire for GYXY) take the pulling load.
Construction
- 1-24 fibres, 250µm coloured
- Single gel-filled loose tube
- Two embedded strength members: glass-reinforced plastic (FRP) or steel wire
- Black UV- and water-resistant polyethylene (PE) outer jacket
Why use it
- Gel-filled single tube protects the fibres
- Embedded strength members give good tensile strength and crush resistance
- Small diameter, easy to install
- UV- and water-resistant
Typical uses
Inter-building voice and data links; duct and underground conduit; FTTx.
Optical characteristics
| Fibre Type | G.652 | G.655 | 50/125µm | 62.5/125µm | |
|---|---|---|---|---|---|
| Attenuation (+20X) | 850 nm | <3.0 dB/km | <3.3 dB/km | ||
| 1300 nm | <1.0 dB/km | <1.0 dB/km | |||
| 1310 nm | <0.36 dB/km | <0.40 dB/km | |||
| 1550 nm | <0.22 dB/km | <0.23 dB/km | |||
| Bandwidth | 850 nm | >500 MHz-km | >200 Mhz-km | ||
| 1300 nm | >500 MHz-km | >500 Mhz-km | |||
| Numerical Aperture | 0.200±0.015 NA | 0.275±0.015 NA | |||
| Cable Cut-off Wavelength cc | <1260 nm | <1450 nm | |||
Mechanical specifications: GYXY (metallic strength members)
| Fibre Count | Nominal Diameter (mm) | Nominal Weight (kg/km) | Allowable Tensile Load (N) | Allowable Crush Resistance (N/100mm) | ||
|---|---|---|---|---|---|---|
| Short Term | Long Term | Short Term | Long Term | |||
| 2~12 | 6.2 | 52 | 1000 | 400 | 1000 | 1000 |
| 14~24 | 7.0 | 64 | 1200 | 500 | 1000 | 1000 |
Mechanical specifications: GYFXY (all-dielectric)
| Fibre Count | Nominal Diameter (mm) | Nominal Weight (kg/km) | Allowable Tensile Load (N) | Allowable Crush Resistance (N/100mm) | ||
|---|---|---|---|---|---|---|
| Short Term | Long Term | Short Term | Long Term | |||
| 2~12 | 6.2 | 45 | 600 | 250 | 1000 | 1000 |
| 14~24 | 7.0 | 56 | 800 | 300 | 1000 | 1000 |
Packing
Plywood or fumigated wooden drum.