Corning SMF-28e+ Bare Optical Fiber
SMF-28e+ is the G.652.D standard-bearer that was the default single-mode fiber for carrier, data center, and enterprise builds for more than a decade. It remains widely deployed and is still a current Corning product.
- ITU-T standard
- G.652.D
- Mode field diameter
- 9.2 ± 0.4 µm @ 1310 nm
- Cladding diameter
- 125.0 ± 0.7 µm
- Coating diameter
- 242 ± 5 µm
Corning SMF-28e+ delivers 9.2 µm mode field diameter, zero water peak per ITU-T G.652.D, 0.34 dB/km maximum attenuation at 1310 nm, and 0.19 dB/km at 1550 nm. PMD coefficient is specified at 0.1 ps per root-km, which supports 10 Gb/s and 40 Gb/s systems on virtually any installed length. Coating is 242 µm dual acrylate.
If your spec sheet calls out SMF-28e+ specifically, we supply SMF-28e+ rather than substituting SMF-28 Ultra or another G.652.D product. The optical parameters are compatible but the fiber identity on a certificate of compliance is what acceptance testing and network documentation require.
For new builds the SMF-28 Ultra offers better attenuation and macrobend performance with the same 9.2 µm MFD, so it splices directly to installed SMF-28e+ plant without any mode-field mismatch. If you are extending an SMF-28e+ span, the Ultra is worth considering. If you are replacing a reel in a system that is already characterized on SMF-28e+, supply the same fiber.
Specifications
| ITU-T standard | G.652.D |
|---|---|
| Mode field diameter | 9.2 ± 0.4 µm @ 1310 nm |
| Cladding diameter | 125.0 ± 0.7 µm |
| Coating diameter | 242 ± 5 µm |
| Attenuation @ 1310 nm | ≤ 0.34 dB/km |
| Attenuation @ 1550 nm | ≤ 0.19 dB/km |
| PMD coefficient | ≤ 0.1 ps/√km |
| Cable cutoff | ≤ 1260 nm |
Typical Applications
- New carrier outside plant and metro transport where the spec calls for G.652.D
- Data center interconnect at 10G, 40G, and 100G
- Exact replacement for installed SMF-28e+ spans
- Enterprise campus backbone where fiber identity on documentation matters
Why Order Corning Fiber from Aumictech?
We source directly from the Corning authorized channel. Every spool ships with documentation, including reel ID and fiber code.
0.5 km to 1,000 km on a single order. Mix lengths across spools. Choose FC, SC, or LC connectors per spool end, or leave ends bare.
Certificate of compliance and OTDR test data available on request. Required for carrier acceptance testing and network documentation.
Continental US next-day and two-day air available. International shipping on request. Most orders confirmed within one business day.
Frequently Asked Questions
What is the difference between SMF-28e+ and SMF-28 Ultra?
Both are G.652.D. SMF-28 Ultra adds G.657.A1 bend compliance, better attenuation (0.32 dB/km at 1310 nm vs 0.34, and 0.18 dB/km at 1550 nm vs 0.19), and lower PMD (0.04 ps/root-km vs 0.1). The mode field diameter is the same at 9.2 µm, so they splice to each other without mismatch. For new builds the Ultra is the better fiber. For exact-match replacement of installed SMF-28e+ plant, we supply SMF-28e+.
Does SMF-28e+ support 100G transmission?
Yes. SMF-28e+ supports 100G DWDM using coherent transceivers over typical carrier span distances. 100GBASE-LR4 and PSM4 interfaces specify G.652.D fiber. For very long DWDM spans where accumulated dispersion or PMD is a concern, the SMF-28 ULL or TXF fiber offers lower loss and PMD, but for most data center and metro 100G deployments SMF-28e+ is the standard choice.
What coating does SMF-28e+ use?
SMF-28e+ uses a 242 µm dual-layer UV-cured acrylate coating. For high fiber count cable designs where cross-section is the constraint, the SMF-28 Ultra 200 is the same fiber with a 200 µm coating. The optical parameters are identical.