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Bend Insensitive Single-mode Optical Fiber (G.657.A1)

Optical Fiber & Fiber Patch Cables, Single-mode Optical Fiber

Bend Insensitive Single-mode Optical Fiber (G.657.A1)

Compared with other single-mode fibers, the most significant feature of G657 fiber is its insensitivity to bending, which means that the bending loss of G657 fiber is relatively small. G.657.A1 has a minimum bend radius of 10mm and is fully compatible with G.652 Single-mode Optical Fiber.

Characteristics
  • Satisfied and superior to the technical requirement of ITU-T G.652.D/G.657.A1;
  • Excellent performance of Bending Resistance;
  • Fully compatible with G.652 single-mode fiber, full-band transmission from 1260nm to 1626nm;
  • Low PMD meets the needs of high-speed and long-distance transmission;
  • High anti-fatigue parameters ensure long life under small bending radius;
Application

Applicable to various structures of optical cables, FTTH high-speed optical routing, optical cables with small bending radius requirements, optical fiber devices, etc.

Technical Specification
Type Properties G.657.A1
Standard
Geometrical Specifications Attenuation Coefficient 1310nm ≤0.35
1383nm (Hydrogen Aging) ≤0.35
1550nm ≤0.21
1625nm ≤0.23
Attenuation Non-uniformity 1310nm,1550nm ≤0.03
Attenuation Discontinuity 1310nm,1550nm ≤0.03
Attenuation Wavelength Characteristic 1288~1330nm ≤0.05
1525~1575nm ≤0.05
Dispersion Characteristic Zero Dispersion Wavelength 1300~1324
Zero Dispersion Slope ≤0.092
1288~1339nm ≤3.5
1271~1360nm ≤5.3
1550nm ≤18
1625nm ≤22
Fiber PMD ≤0.1
Fiber Cutoff Wavelength ≤1260
Macro-bend Loss (10 circles, 30mm) 1550nm ≤0.25dB
(10 circles, 30mm) 1625nm ≤1dB
(1 circle, 20mm) 1550nm ≤0.75dB
(1 circle, 20mm) 1625nm ≤1.5dB
(1 circle, 15mm) 1550nm -
(1 circle, 15mm) 1625nm -
MFD 1310nm 9.2±0.4
Size Parameter Curl ≥4.0
Cladding Diameter 125 ± 0.7
Core/Cladding Concentricity ≤0.5
Cladding Non-circularity ≤1.0%
Coating Diameter 245± 10
Cladding/Coating Concentricity ≤12
Coating Non-circularity ≤6%
Mechanical Specification Proof Test Strain ≥1.05%
Tensile Strength (10m distance) 15% Weber Fracture Probability 2.76
50% Weber Fracture Probability 3.45
Fatigue Resistance Parameter Nd ≥ 20
Strip Force (peak) N 1.0~8.9
Strip Force (average) N 1.0~5.0
Environmental Specifications Temperature Cycling Additional Attenuation (-60℃ ~ +85℃) dB/km@1310nm, 1550nm, 1625 nm ≤ 0.05
Damp Heat Aging (+85±2℃, 85%RH, 30days) dB/km@1310nm, 1550nm, 1625 nm ≤ 0.05
High Temperature Aging (85±2℃, 30days) dB/km @1310nm, 1550nm, 1625 nm ≤ 0.05
Water Immersion Additional Attenuation (23±2℃, 30days) dB/km @1310nm, 1550nm, 1625 nm ≤ 0.05
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