Information and Communication technology, Safety cable systems, Building automation, Elevator cable systems, Cable harnessing, logistics and support
Strana 164 z 528
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Poznámky redaktora
0,20 dB/√km
Attenuation 1310 Attenuation 1383 Attenuation 1550 nm
≤ 0,5 dB/km
≤ 0,4 dB/km
≤ 0,35 dB/km 0,4 dB/km
≤ 0,3 dB/km 0,4 dB/km 0,5 ps/√km
Informations
Attenuation 1625 PMD 0,5 ps/√km
≤ 0,2 ps/√km
U-146
Technical changes reserved. 0,22 dB/km max.7 0.2 0.D
Communication technology
Coating
Cladding
Core
PMD frequency scale fibre G.652.
0.652.
50% 40% 30% 20% 10% 0,025 0,075 0,1 0,2 0,25 0,3
29%
Copper unscreened
8%
Spectral attenuation according ITU-T G.C
≤ 0,4 dB/km 0,4 dB/km
ITU-T G.652.D
O-band
1300
E-band
1400
S-band
1500
C-band
L-band
1600
Systems
Wavelength [nm]
Fibre standards according ITU-T G.B
≤ 0,4 dB/km
ITU-T G.5 0.652.652.D optimised for highest data rate transmission 1310nm 1625 nm. 0,34 dB/km max. 0,24 dB/km max.D used from Dätwyler have very low PMD value which much lower than the standard request.1 0.3 0.652. 0,34 dB/km max.652. The geometrical, optical and mechanical performance corresponds the relevant international standards.652.D
Copper screened
60% 63%
Fibre optic systems with very high bit rates and very low chromatic dispersion must use single mode fibre with very low PMD (Polarization Mode Dispersion).D
≤ 0,4 0,4 dB/km 0,3 dB/km 0,4 dB/km 0,2 ps/√km
Dätwyler G.6
Typical channel space for CWDM-systems: 20nm
Fibre optic
Fibre
1270 (nm)
1610 (nm)
Attenuation [db/km]
0. 0,25 dB/km typ.
ITU-T G.
.A
Accessories
ITU-T G.Singlemode fibre
according G. 0,36 dB/km typ.0
Singlemode G.652 standard specifying the singlemode fibre into categories.652. 0,24 dB/km typ. The zero water peak the E-Band (1383-1480nm) allows use CWDM technology over the full range wavelength.652
The singlemode fibre G.652
ITU-T G. 0,05 dB/√km max.8 0.D
typ.652. Singlemode fibre G.4 0.652.A Singlemode G. 0,36 dB/km typ
