These are specifications are for single mode trunk cable support
attachment to fiber optic channel devices:
Table 1. Specifications for single mode trunk cable
support attachment to fiber optic channel devices
| Specification |
Details |
| Type of fiber |
Dispersion unshifted |
| Operating wavelength |
1270 to 1355 |
| Mode field diameter 1 |
8.7 to 10.0 |
| Core concentricity error 2 |
1.0 μm maximum |
| Cladding diameter 2 |
125 ±2.0 μm |
| Cladding noncircularity 2 |
2% maximum |
| Zero dispersion wavelength 3 |
1300-1322 nm (nominal 1310 nm) |
| Zero dispersion slope 3 |
0.095 ps/(nm2-km) maximum |
| Cutoff wavelength (λc) 4 |
1280 nm maximum |
| Cutoff wavelength (λcc) 5 |
1260 nm maximum |
| Attenuation above nominal 6 |
0.06 dB/km maximum |
| Attenuation 7 |
0.5 dB/km at 1300 nm |
Notes:
- Measured in accordance with EIA 455 FOTP 164, 167, or equivalent.
- Measured in accordance with EIA 455 FOTP 45, 48, or equivalent.
- Measured in accordance with EIA 455 FOTP 168 or equivalent.
- Measured in accordance with EIA 455 FOTP 80 or equivalent.
- Measured in accordance with EIA 455 FOTP 170 or equivalent.
- The maximum attenuation for wavelengths from 1270 to 1355 nm must
not exceed the attenuation at 1310 nm by more than 0.06 dB/km. (Typically,
this specification can be met by fiber with 1383-nm OH absorption
peaks below 2 dB/km.)
- This attenuation is a typical value, not a specification. Use
the actual dB/km attenuation value when completing a Calculated Link
Loss Work Sheet. The total link loss, however, cannot exceed 7 dB
for an fibre channel link.
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