C28_e LongLine™ 2010-02-04 Page 1 of 1 C28 : Properties of cabled Submarine LongLine™ SM fibre G654B : For long distance data transport across oceans and continents General and application The optical fibres are made of a high grade doped silica core surrounded by a silica cladding; They are coated with a dual layer, UV cured acrylate based coating. The LongLine™ fiber exhibits an extremely high effective area of 120 µm2, 50 % higher than standard single-mode fiber. It dramatically reduces the non-linear effects offering the possibility of higher power and consequently higher distance. The very low attenuation in the Cband and L-band further enhanced the distance capacity while preserving system margins. The trench assisted design keeps macrobending and micro-bending to a very low level. In addition the LongLine™ fiber has chromatic properties compatible with commercially available chromatic dispersion modules or reverse dispersion fibers, like used in submarine applications. The fiber complies with or exceeds ITU-T Recommendation G.654 and IEC Int. Standard 60793-2-50, type B1.2, which has the zerodispersion wavelength around 1300 nm wavelength, shows a cut-off shift at a wavelength around 1500 nm, is loss-minimized and is optimized for use in the 1530-1625 nm region. It benefits of the Draka’s proprietary plasma process technologies (PCVD and APVDTM) and coating technologies (DLPC9). The Draka LongLine™ fiber is available at different screen test tensile stress according to application and customer request, 2 % strain equivalent notably available for submarine applications. Standards and Norms IEC / EN 60793-2-50 Category B.1.2 ITU-T Recommendation G.654.B Attenuation (of cable with fibres) IEC 60793-1-40 1550 nm 1625 nm Max. attenuation change in the interval 1550 - 1625 nm (ref. 1550 nm) Max. attenuation change in the interval 1525 - 1575 nm (ref. 1550 nm) Point discontinuity at 1310 and 1550 nm ≤ 0.20 dB/km ≤ 0.22 dB/km ≤ 0.03 dB/km ≤ 0.02 dB/km ≤ ± 0.05 dB Group index of refraction IEC 60793-1-22 Effective group index at 1550 nm Effective group index at 1625 nm 1.467 1.468 Fibre properties according to IEC Effective area Mode field diameter at 1550 nm Cladding diameter Cladding non-circularity Core - cladding concentricity error Primary coating diameter – Coloured Primary coating non-circularity Primary coating - cladding concentricity error Chromatic dispersion coefficient: In the interval 1530 nm – 1565 nm In the interval 1565 nm – 1625 nm Zero dispersion wavelength, λ0 Dispersion slope at 1550 nm Cut-off wavelength Macrobending loss 100 turns on a ø 30 mm mandrel at 1550 nm 100 turns on a ø 30 mm mandrel at 1625 nm Polarisation mode dispersion (PMD) coefficient, max. uncabled PMDQ Link Design Value (calculated with Q=0.01%) Proof stress level Strip force (peak) Dynamic fatigue resistance aged and unaged (Nd) Static fatigue resistance (Ns) IEC 60793-1 typical IEC / EN 60793-1-45 IEC / EN 60793-1-20 IEC / EN 60793-1-20 IEC / EN 60793-1-20 IEC / EN 60793-1-21 IEC / EN 60793-1-21 IEC / EN 60793-1-21 IEC / EN 60793-1-42 typical IEC / EN 60793-1-44 IEC / EN 60793-1-47 IEC / EN 60793-1-48 IEC / EN 60794-3 IEC / EN 60793-1-30 IEC / EN 60793-1-32 IEC / EN 60793-1-33 IEC / EN 60793-1-33 µm² µm µm % µm µm % µm 120 11.6 – 12.4 125.0 ± 0.7 ≤ 0.7 ≤ 0.5 245 ± 10 ≤5 ≤ 12 ps/km • nm ps/km • nm nm 2 ps/(nm • km) λcc nm dB ≤ 23 ≤ 27 ≤ 1350 ≤ 0.062 ≤ 1530 * ps/√km ps/√km Gpa N ≤ 0.03 ≤ 0.1 ≤ 0.1 ≤ 0.04 ≥ 1.4 (≈ 2 % strain) 1.2 ≤ Fpeak.strip ≤ 8.9 ≥ 20 ≥ 23 * valeur garantie selon UIT-T (méthode ATM G650) Note: The Draka Comteq Cable Solutions policy of continuous improvement may cause in changed specifications without prior notice www.draka.com/communications
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