Optical Fiber

Bending Insensitive Single mode optical fiber G.657.A1

Name: Bending Insensitive Single mode optical fiber G.657.A1
Availability: InStock

G.657.A1 bending-insensitive single-mode optical fiber is engineered for FTTH drop cables and indoor cabling applications where tight bends are unavoidable. With a minimum bend radius of 10mm (1 turn, 1625nm), it delivers reliable signal transmission even when routed through tight corners, wall cavities, and dense fiber management trays. Fully backward-compatible with G.652.D standard single-mode fiber, it features low water-peak performance across the full O-E-S-C-L band (1260–1625nm) and is compliant with ITU-T G.657.A1 specifications.

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ZTOFC G.657.A1 bending insensitive single-mode optical fiber combines excellent macro-bending resistance with full G.652.D backward compatibility. With a minimum bend radius of 10mm, it delivers reliable signal transmission even when routed through tight corners, wall cavities, and dense fiber management trays. The fiber is comprehensively optimized for use across the full O-E-S-C-L band (1260–1625nm) with low water-peak performance.

Characteristics

Low macro-bending sensitivity with 10mm minimum bend radius (1 turn, 1625nm)
Full G.652.D backward compatibility — seamless splicing with standard fibers
Low water peak across full 1260–1625nm spectrum
Low attenuation: ≤ 0.35 dB/km @ 1310nm, ≤ 0.22 dB/km @ 1550nm
Optimized for FTTH drop cables, MDU indoor cabling, and dense patching

Application

FTTH drop cables and indoor cabling
Multi-dwelling unit (MDU) riser and in-building wiring
High-density fiber management trays and patch panels
Access networks requiring tight bend tolerance

Standard

ITU-T G.657.A1
IEC 60793-2-50
Compatible with ITU-T G.652.D

Key Features

Minimum bend radius: 10mm (1 turn at 1625nm) — ideal for FTTH indoor routing
Full G.652.D backward compatibility — seamless splicing with standard fibers
Low water peak across 1260–1625nm range (O to L band)
Low attenuation: ≤ 0.35 dB/km @ 1310nm, ≤ 0.22 dB/km @ 1550nm
Optimized for FTTH drop cables, MDU indoor cabling, and dense patching
Compliant with ITU-T G.657.A1

Frequently Asked Questions

1. What is the difference between G.657.A1 and G.657.A2?

G.657.A1 has a minimum bend radius of 10mm, while G.657.A2 goes down to 7.5mm. Both are fully backward-compatible with G.652.D. G.657.A1 is sufficient for most FTTH drop applications; G.657.A2 is recommended for extremely tight routing in multi-dwelling units (MDUs) with sharp corners.

2. Can G.657.A1 fiber be spliced to G.652.D fiber?

Yes. G.657.A1 has the same mode field diameter (8.6–9.5μm) as G.652.D, ensuring low-loss fusion splicing with standard splice programs. No special equipment or parameters required.

3. Is G.657.A1 suitable for long-distance transmission?

G.657.A1 has the same attenuation characteristics as G.652.D, making it suitable for distances up to 80–120km. Its primary advantage is bend tolerance for indoor environments; for purely long-haul outdoor applications, G.652.D is the more cost-effective choice.