Performance for Fiber Optic Cable
| Type | Mode field diameter (μm) | Core efficiency area (μm²) | Cladding diameter (μm) | Core/cladding concentricity error (μm) | cladding non-circularity (%) | Coating thickness (μm) | Minimum sieving tension (N) |
|---|---|---|---|---|---|---|---|
| G.652 | 9.2±0.4 (1310nm) | - | 125±1.0 | ≤0.5 | ≤1.0 | 245±5 | ≥ 8.6* |
| G.655 | 92.--10.0 (1550nm) | 7.2 (1550nm) | 125±1.0 | ≤0.5 | ≤1.0 | 245±5 | ≥ 8.6* |
- G.652 — Single-mode Optical Fiber
- G.655 — Non-Zero Dispersion Displacement Single Mode Optical Fiber
- *(1% optical strain @100kpsi, hold time ≥ 1S)
Optical & Transmission Characteristics
| Attenuation | |||
|---|---|---|---|
| Item | G.652 | G.655 | |
| 1310nm | 1550nm | 1550nm | |
| Class A (dB/km) | ≤ 0.36 | ≤ 0.22 | ≤ 0.22 |
| Class B (dB/km) | ≤ 0.40 | ≤ 0.25 | ≤ 0.25 |
Attenuation Uniformity
G.652: ≤ (α mean + 0.10dB) / 2
G.655: ≤ (α mean + 0.10dB)
Attenuation Increase with Bending
| Item | G.652 | G.655 | |
|---|---|---|---|
| 1310nm | 1550nm | 1550nm | |
| 100 turns of fiber loosely wound with 50mm diameter | ≤ 0.05 | ≤ 0.10 | ≤ 0.10 |
Increased attenuation (dB)
Dispersion
G.652
| Dispersion | Amount |
|---|---|
| Zero dispersion wavelength | 1300-1322nm |
| Zero dispersion slope(S0) | ≤ 0.092ps/(nm² × km) |
| Dispersion modulus | ≤ 3.5ps / (nm × km) (1285-1330nm) ≤ 18.0ps/(nm × km) (1550nm) |
G.655
| Dispersion | Amount |
|---|---|
| 1530-1565nm | 2.0ps/(nm × km) ≤ | D(λ)| ≤ 6.0ps/(nm × km) |
| 1565-1625nm | 4.5ps/(nm × km) ≤ | D(λ)| ≤ 11.2ps/(nm × km) |
Cut-off Wavelength After Rewinding
| G.652 | G.655 |
|---|---|
| λcc ≤ 1260nm | λcc ≤ 1470nm |
(measured on a 20+2m length sample)