8/2/2019 Tipo de Fibra Norma G.655. PDF

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For high bit rate DWDM systems in the Metro environment

General and applicationTeralight

Non-Zero Dispersion Shifted Fibre (NZDSF) has set the standard for high bit-rate, multi-wavelength transmission.

Its unique optimization of effective area, chromatic dispersion and dispersion slope enables excellent distortion management,cost-effective operation at 10 and 40 Gbps, tight channel spacing in C and L bands, compatibility with future S band andprovides full compliance with the new ITU G.656 recommendation.

TeraLigth

Metro is further optimized for metropolitan backbone applications. It supports 10 Gbps transmission withoutdispersion compensation for distances of about 200 km, resulting in cost savings compared to standard single mode fibre. Forlonger distances or 40 Gpbs operation, commercially available compensating devices can be used. The same fibre alsosupports short-length metro systems, providing additional cost savings.

Standards and NormsIEC 60793-2-50 Category B4

EN 60793-2-50: Class B4

ITU Recommendation G.655.B

ITU Recommendation G.655.C

ITU Recommendation G. 656

Attenuation (of cable with fibres) IEC 60793-1-40

1310 nm 0.43 dB/km1550 nm 0.28 dB/km1625 nm 0.31 dB/km

1383 nm 1.0 dB/kmGroup index of refraction at 1310 nm 1.4690Group index of refraction at 1550 nm 1.4692

Group index of refraction at 1625 nm 1.4694

Fibre properties according to IEC IEC 60793-1

Attribute Measurement method Units LimitsMode field diameter @1550 nm IEC/EN 60793-1-20 m 9.2 0.5Cladding diameter IEC/EN 60793-1-20 m 125.0 1Cladding non-circularity IEC/EN 60793-1-20 % 1.0Core (MFD) non-circularity IEC/EN 60793-1-20 % 6Core (MDF) -cladding concentricity error IEC/EN 60793-1-20 m 0.6Primary coating diameter - coloured IEC/EN 60793-1-21 m 250 15Primary coating non-circularity IEC/EN 60793-1-21 % 6Primary coating-cladding concentricity error IEC/EN 60793-1-21 m 12Proof stress level IEC/EN 60793-1-30 GPa 0.7 ( 1 %)Strip force (peak) IEC/EN 60793-1-32 N 1.3 Fpeak.strip 8.9Chromatic dispersion coefficientAt 1440 nmIn the interval 1530 nm 1565 nmTypical value at 1550 nmIn the interval 1565 nm 1625 nmIn the interval 1285 nm 1330 nm

IEC/EN 60793-1-42ps/km nmps/km nmps/km nmps/km nmps/km nm

> 0.15.5 to 10.087.5 to 13.4-10.0 to3.0

Macro bending loss at 1550 nm, 100 turns on a

50 mm mandrel.

IEC/EN 60793-1-47 dB 0.05

PMDQ Link Design Value IEC/TR 61283-3 ps/ km 0.08