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G.657A1

Bend-insensitive single-mode fiber (G.657A1) combines the characteristics of non-dispersive mode-shift single-mode fiber with superior bending performance, suitable for full-band transmission across 1260-1625nm. Under long-wavelength conditions, its bending radius can be as small as 10nm.

Consulting Product

Product Details

G.657A1 Single-mode fiber with low bending sensitivity

product description

Bend-insensitive single-mode fiber (G.657A1) combines the characteristics of non-dispersive mode-shift single-mode fiber with superior bending performance, suitable for full-band transmission across 1260-1625nm. Under long-wavelength conditions, its bending radius can be as small as 10nm.

operative norm

It meets and exceeds the requirements of ITU-T recommended G.652D/G.657A and IEC60973-2-50 B1.3 optical fiber technical specifications.

Product Features

· Eliminate the absorption of the 1383nm water peak and realize the transmission of the whole band from 1260nm to 1625nm;

· Excellent bending performance, used in the case of special requirements for bending radius;

· It is fully compatible with existing G.652D optical fibers;

· Excellent geometric dimensions ensure low welding loss and high welding performance, and excellent PMD coefficient to meet the long relay distance and high speed requirements of transmission systems.

Product Application

· Optical cable for various structures;

· Transmission in the full band of 1260 ~ 1626nm;

· FTTH high-speed optical router;

· Cable with small bending radius, small size cables and fiber optic devices, and requirements for L-band use.

Technical Specifications

Optical fiber performance Main indicator name technical parameter
Geometry cladding diameter 125.0±0.7μm
Coating Diameter 242±7μm
Outer coating/concentricity error (OCE) ≤12μm
Inner Coating/Cladding concentricity error (PCE) ≤12μm
Core/Cladding concentricity error (ECC) ≤0.5μm
non-circularity of cladding ≤0.7%
Coating roundness ≤3%
Bend radius ≥4m
optical performance Magnetic field diameter (MFD) 1310nm 8.8±0.4μm
Magnetic field diameter (MFD) 1550nm 9.8±0.5μm
1310nm discount factor ≤0.350dB/km
1550nm discount factor ≤0.210dB/km
1383nm attenuation coefficient (after hydrogen aging) ≤0.350dB/km
1625nm discount factor ≤0.230dB/km
Maximum attenuation in the 1285-1330nm range versus 1310nm attenuation ≤0.05dB/km
Maximum attenuation in the 1525-1575nm range versus 1550nm attenuation ≤0.05dB/km
1310nm attenuation discontinuity ≤0.05dB
1550nm attenuation discontinuity ≤0.05dB
zero dispersion wavelength 1312±12nm
zero dispersion slope ≤0.091ps/(nm²*km)
1550nm dispersion coefficient ≤18ps/(nm*km)
Optical fiber cutoff wavelength ≤1260nm
Polarization mode dispersion (PMD) ≤0.2ps/√km
mechanical behavior Filter tension 1% ≥9N ≥100kpsi
Coating peeling force 1≤F average ≤5N 1.3≤F peak ≤8.9N
Dynamic fatigue parameter Nd ≥20
environmental performance Temperature cycle additional attenuation (-60℃ to 85℃) ≤0.05 dB/km
Humidity and temperature cycle with additional attenuation (-10°C to 85°C, 98% relative humidity) ≤0.05 dB/km
Water immersion attenuation (23℃,30 days) ≤0.05 dB/km
Humid heat additive attenuation (85°C, 85% RH, 30 days) ≤0.05 dB/km
Dry heat aging with additional attenuation (85℃,30 days) ≤0.05 dB/km
Flexibility 10 rings φ30mm, 1550nm ≤0.25dB
10 rings φ32mm, 1625nm ≤1dB
1 circle φ20mm, 1550nm ≤0.75dB
1 circle φ20mm, 1625nm ≤1.5dB
Fiber length 2.1~61km

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