
G.657.A1
Fiber on reelsBend-insensitive access fiber
- Attenuation · 1550 nm
- ≤ 0.210 dB/km
- Cladding diameter
- 125 ± 0.7 μm
- Coating diameter
- 245 ± 10 μm / 200 ± 10 μm

Coated optical fiber on reels · Illustrative product image
G.652.D single mode optical fiber on reels for backbone, metropolitan and access cable designs. Compare the listed attenuation limits and mode-field geometry with your wavelength, loss budget and splicing requirements.
Pricing, order quantity and lead time confirmed for your specification and delivery destination.
Values below are supplier reference limits. Test conditions and units are shown for engineering review.
| Parameter / test condition | Reference specification |
|---|---|
| Attenuation at 1310 nm | ≤ 0.330 dB/km (standard) |
| Attenuation at 1550 nm | ≤ 0.185 dB/km (standard) |
| Optional low-loss grade at 1550 nm | ≤ 0.180 dB/km |
| Cladding diameter | 125 ± 0.7 μm |
| Mode field diameter at 1310 nm | 9.2 ± 0.4 μm |
| Coating diameter | 242 ± 7 μm |