Sumitomo B6.a1 SM Fiber (G.657.A1)

Product Detail

Attenuation

Product Production

Attenuation vs. Wavelength

maximum attenuation change over the window from reference

Product Packaging

Point discontinuities

Point discontinuity is not more than 0.02dB at 1310nm or 1550nm.

Attenuation uniformity

If fiber Length ≥2.15km ,the difference value of segment attenuation and average attenuation is not more than 0.03dB/km。

Size and Optical Parameter

Item	Specification
MFD（1310nm） mm	8.60± 0.40
MFD（1550nm） mm	9.80± 0.50
Cladding diameter mm	125.0 ± 0.7
Cladding no-circular %	≤1.0
Cladding to core concentricity error mm	≤0.5
Secondary coating diameter mm	245.0± 10.0
Secondary coating to cladding concentricity error mm	≤10.0

Cut-off wavelength

2m fiber Cut-off wavelengthλc nm	1150≤λc≤1330
22m cable Cut-off wavelengthλcc Max nm	1260

Macro bending loss

Chromatic dispersion

Zero dispersion wavelength l₀nm	1300~1324
Slope S₀ ps/(nm².km)	0.073~0.092
At 1288~1339nm, D(l) ps/(nm.km)	≤3.5
At 1271~1360nm, D(l) ps/(nm.km)	≤5.3
At 1550nm , D(l) ps/(nm.km)	13.3~18.6
At 1625nm , D(l) ps/(nm.km)	17.2~23.7
PMD coefficient ps/km^1/2	≤0.2(fiber value)
PMD coefficient ps/km^1/2	≤0.1 (Link value)

Mechanical specification

Item	Specification
Proof test	strain≥2.0%（proof stress 19.6N）
Coating strip force N	Peak 1.0≤F≤8.9 Average 1.0≤F≤5.0
Dynamic fatigue Nd	≥20
Tensile strength (median) for 0.5m specimen length (Gpa)	weibull Probability 50%	≥3.8
	weibull Probability 15%	≥3.14
Fiber curl R （m）	≥4

Environmental specification

Environmental test condition	Induced attenuation (dB/km)
	1550nm	1625nm
Temperature dependence -60⁰C to 85⁰C	≤0.05	≤0.05
Heat & humidity aging 85±2⁰C,RH>85%,30days	≤0.05	≤0.05
Water immersion 23+/-2⁰C,30days	≤0.05	≤0.05
Heat aging 85+/-2⁰C,30days	≤0.05	≤0.05