Attenuation needs a wavelength.
Compare dB/km values at the same wavelength and keep standard and optional grades separate.
Understand optical fiber attenuation →
OPTICAL FIBER COMPARISON
Compare optical fiber specifications.
Compare G.652.D, G.657.A1, G.657.A2, G.657.B3, OM1, OM3 and OM4 optical fiber on reels. Review source limits and complete test conditions before preparing a bulk fiber RFQ.
SEVEN MODELS · TWO FIBER FAMILIES
Choose a comparison by fiber family.
Single-mode and multimode measurements are shown separately. Every value comes from the existing product reference table; follow a model link to review its source and full specification.
Single-mode comparison
Scroll the table to see all models →| Parameter | G.652.DBackbone & metro | G.657.A1FTTx & access networks | G.657.A2High-density FTTx | G.657.B3Indoor FTTH |
|---|---|---|---|---|
| Attenuation at 1310 nm | ≤ 0.330 dB/km (standard) | ≤ 0.350 dB/km | ≤ 0.350 dB/km | Not listed in reference |
| Attenuation at 1550 nm | ≤ 0.185 dB/km (standard) | ≤ 0.210 dB/km | ≤ 0.210 dB/km | ≤ 0.210 dB/km |
| Cladding diameter | 125 ± 0.7 μm | 125 ± 0.7 μm | 125 ± 0.7 μm | 125 ± 0.7 μm |
| Mode field diameter at 1310 nm | 9.2 ± 0.4 μm | Not listed in reference | 8.6 ± 0.4 μm | 8.6 ± 0.4 μm |
| Coating diameter | 242 ± 7 μm | 245 ± 10 μm / 200 ± 10 μm | 242 ± 7 μm / 200 ± 10 μm | 242 ± 7 μm |
| Cable cut-off wavelength | Not listed in reference | ≤ 1260 nm | Not listed in reference | Not listed in reference |
| Published bend-loss tests | Not listed in reference | ≤ 0.25 dB15 mm radius, 10 turns, 1550 nm | ≤ 0.40 dB7.5 mm radius, 1 turn, 1550 nm | ≤ 0.15 dB5 mm radius, 1 turn, 1550 nm ≤ 0.45 dB5 mm radius, 1 turn, 1625 nm |
| Next step | Full specifications →Request a quote | Full specifications →Request a quote | Full specifications →Request a quote | Full specifications →Request a quote |
Bend-loss values have different test radii, turns and wavelengths. Compare the stated conditions; these are not finished-cable installation limits.
Multimode comparison
Scroll the table to see all models →| Parameter | OM1LAN & network extensions | OM3Data centers & LAN | OM4High-bandwidth data centers |
|---|---|---|---|
| Core diameter | 62.5 ± 2.5 μm | 50.0 ± 2.5 μm | 50.0 ± 2.5 μm |
| Cladding diameter | 125.0 ± 1.0 μm | 125 ± 1.0 μm | 125 ± 1.0 μm |
| Attenuation at 850 nm | ≤ 2.7 dB/km | ≤ 2.4 dB/km | ≤ 2.4 dB/km |
| Attenuation at 1300 nm | ≤ 0.6 dB/km | ≤ 0.6 dB/km | ≤ 0.6 dB/km |
| Overfilled modal bandwidth at 850 nm | ≥ 200 MHz·km | Not listed in reference | Not listed in reference |
| Overfilled modal bandwidth at 1300 nm | ≥ 500 MHz·km | Not listed in reference | Not listed in reference |
| Effective modal bandwidth at 850 nm | Not listed in reference | ≥ 2000 MHz·km | ≥ 4700 MHz·km |
| Coating diameter | 245 ± 7 μm | 245 ± 7 μm | 245 ± 7 μm |
| Next step | Full specifications →Request a quote | Full specifications →Request a quote | Full specifications →Request a quote |
OFL (overfilled launch) and effective modal bandwidth are different measurements. A value not listed here must be confirmed against the applicable supplier datasheet.
Read the conditions before comparing the numbers.
Bend tests need their full conditions.
Radius, turn count and wavelength belong with every macrobend result. A fiber test is not a finished cable installation limit.
Compare G.657.A1 and G.657.A2 →OFL and EMB are different bandwidth tests.
OM1 overfilled modal bandwidth and OM3/OM4 effective modal bandwidth should not be treated as the same measurement.
Understand effective modal bandwidth →