Single Mode G.657 Optical Fiber
Sinocomms' G.657.A1, G.657.A2, and G.657.B2 single-mode optical fiber are designed specially for optical transmission systems operating over the entire wavelength window from O-E-S-C-L band(1260nm-1625nm). Sinocomms' bending insensitive feature not only guarantees L-band applications but also allows for easy installation without excessive care when storing the fiber especially for FTTH networks application. Bending radii in fiber guidance ports can be reduced as well as minimum bend radii in wall and corner mountings.
Sinocomms tightens many parameters of optical fiber products so as to offer more conveniences to customers.
- Specifications
- Features
- Applications
- Compliances
- Downloads
Specifications
| FIBER GEOMETRY | |
| Coating diameter, coloured | 250 ±10µm |
| Cladding diameter | 125.0 ± 0.7µm |
| Cladding non-circularity | ≤0.7% |
| Core concentricity error | ≤0.4µm |
| MECHANICAL PROPERTIES | |
| Minimum bending radius | 30mm |
| Proof stress | 1% |
| Proof stress time | 1s |
| Fiber curl radius | ≥4m |
| TRANSMISSION PROPERTIES–for optical fiber in cable | |
| Attenuation at 1310nm | mean 0.37dB/km, max 0.40dB/km |
| Attenuation at 1383nm* | mean 0.37dB/km, max 0.40dB/km |
| Attenuation at 1550nm | mean 0.22dB/km, max 0.28dB/km |
| Attenuation at 1625nm | mean 0.30dB/km, max 0.40dB/km |
| Cable cut-off wavelength | ≤1260nm |
| Mode field diameter | 8.8-9.6µm |
| Zero-dispersion wavelength | 1300-1324nm |
| Zero-dispersion slope | 0.092ps/nm/nm/km |
| Chromatic dispersion at 1550nm | 18ps/nm/km |
| Chromatic dispersion at 1285-1330nm | 3.5ps/nm/km |
| PMD (link design value) | ≤0.06ps/√km |
* After hydrogen ageing according to IEC60793-2-50
Features
- Low PMD
- Low attenuation
- Low water-peak level
- Low macro-bending sensitivity
- Easy open latch
- Accurate geometrical parameters
Applications
- Optical fiber cables
- Optical networks operating in O-E-S-C-L band
- Optical routes for FTTH networks
Compliances
- ITU-T Recommendation G.652.D/G.657.A1/G.657.A2/G.657.B2
- IEC 60793-2-50 class B1.3/B6.a1/B6.a2/B6.b2