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Single Mode Optical Fiber G657.A2


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Product Description

Technical Parameters

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Description:

G.657A2 bears the entire characteristics of non-dispersion shifted single-mode optical fiber and superior bending performance, which is applicable to transmission over entire wavelength from 1260nm to 1625nm. It has low macro-bending loss and even with the bending radius of 7.5mm，and the macro-bending loss at 1625nm is only 0.8 dB.

Application:

Applies to all types of optical fiber cable，especially indoor tight-buffer cable and bow-type drop cable, which is the essential part for FTTH and FTTB.

Features:

(1) It completely overcomes the attenuation of water peak at 1383nm and could operate over the entire waveband from 1260nm to 1625nm.

(2) Excellent bending performance, applicable to occasion with special requirement of bending radius.

(3) Completely compatible with existing G.652D.

(4) Accurate geometrical parameter ensures low splicing loss and high splicing performance.

(5) Excellent PMD performance supports high-speed and long repeater spacing transmission system.

G.657.A2 Fiber Color Identification

No.	1	2	3	4	5	6	7	8	9	10	11	12
Color	Blue	Orange	Green	Brown	Slate	White	Red	Black	Yellow	Violet	Pink	Aqua

G.657.A2 Fiber Technical Parameters

Optical Performance
Characteristics	Conditions	Unit	Standard Value
Attenuation	1310nm	dB/km	≤0.344
	1383nm	dB/km	≤value at 1310nm
	1550nm	dB/km	≤0.204
	1625nm	dB/km	≤0.234
Attenuation vs Wavelength Max Difference	1285nm ~ 1330nm vs 1310nm	dB/km	≤0.04
Attenuation vs Wavelength Max Difference	1525nm ~1575nm vs 1550nm	dB/km	≤0.03
Dispersion Coefficient	1285nm~1340nm	ps/(nm/km）	≤3.5
	1271nm~1360nm	ps/(nm/km）	≤5.3
	1550nm	ps/(nm/km）	13.3-18.0
	1625nm	ps/(nm/km）	17.2-23.0
Zero Dispersion Wavelength λ₀	--	nm	1300-1324
Zero Dispersion Slope S₀	--	ps/(nm²/km)	0.073-0.092
Typical Value	--	ps/(nm²/km)	≤0.086
PMD	Maximum Individual Fiber	ps/√km	≤0.06
	Link (M=20, Q=0.01%)	ps/√km	≤0.06
	Typical Value	ps/√km	≤0.04
Fiber Cut-off Wavelength λcc	--	nm	1180-1330
Cable Cut-off Wavelength λcc	--	nm	≤1260
MFD	1310nm	μm	8.6±0.4
MFD	1550nm	μm	9.7±0.6
Point Discontinuity	1310nm	dB	≤0.05
Point Discontinuity	1550nm	dB	≤0.05

Geometrical Performance
Characteristics	Unit	Standard Value
Cladding Diameter	μm	125.0±0.7
Cladding Non-circularity	%	≤1.0
Core-Cladding Concentricity Error	μm	≤0.5
Coating Diameter	μm	243±5.0
Coating Non-circularity	%	≤6.0
Coating-Cladding Concentricity Error	μm	≤12
Curl Radius	m	≥4

Mechanical Performance
Characteristics	Conditions	Unit	Standard Value
Proof Test	--	%	≥1.0
	--	N	≥8.8
	--	Gpa	≥0.69
Coating Strip Force	Peak Force	N	1.0-8.9
Coating Strip Force	Average Value	N	1.0-5.0
Tensile Strength (Weibull Probability Level)	Before -aged（sample 0.5m）（Level 15%)	Gpa	≥3.14
	Before -aged（sample 0.5m）（Level 50%)		≥3.80
	After -aged（sample 0.5m）（Level 15%)		≥2.76
	After -aged（sample 0.5m）（Level 50%)		≥3.03
Dynamic Fatigue Nd	--		≥20
Macro-bending Loss	(10 turns; Ф 30 mm) @1550 nm	dB	≤0.03
	(10 turns; Ф 30 mm) @1625 nm	dB	≤0.1
	(1 turns; Ф 20 mm) @1550 nm	dB	≤0.1
	(1 turns; Ф 20 mm) @1625 nm	dB	≤0.2
	(1 turns; Ф 15 mm) @1550 nm	dB	≤0.5
	(1 turns; Ф 15 mm) @1625 nm	dB	≤1.0

Environmental Performance
Characteristics	Conditions	Unit	Standard Value
Temperature Cycling	-60℃ ~+85℃	dB/km	≤0.05
Damp Heat Aging	85℃、 RH 85%、 30 Days	dB/km	≤0.05
Water Immersion	23℃、 30 Days	dB/km	≤0.05
Dry Heat Aging	85℃、 30 Days	dB/km	≤0.05