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

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

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

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
Type	Properties			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
	Attenuation Wavelength Characteristic		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
		Tensile Strength (10m distance)	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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