8 0.652 standard specifying the singlemode fibre into categories.D
O-band
1300
E-band
1400
S-band
1500
C-band
L-band
1600
Systems
Wavelength [nm]
Fibre standards according ITU-T G.D optimised for highest data rate transmission 1310nm 1625 nm. Singlemode fibre G.2 0.0
Singlemode G.
0. 0,05 dB/√km max.A Singlemode G. 0,24 dB/km typ.3 0.A
Accessories
ITU-T G.652.D
≤ 0,4 0,4 dB/km 0,3 dB/km 0,4 dB/km 0,2 ps/√km
Dätwyler G. 0,36 dB/km typ. 0,24 dB/km max.652.7 0.652.4 0.D used from Dätwyler have very low PMD value which much lower than the standard request. 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.652.652.652.Singlemode fibre
according G. 0,34 dB/km max.652
ITU-T G.6
Typical channel space for CWDM-systems: 20nm
Fibre optic
Fibre
1270 (nm)
1610 (nm)
Attenuation [db/km]
0.
.652.5 0.B
≤ 0,4 dB/km
ITU-T G. 0,36 dB/km typ.1 0.
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. 0,25 dB/km typ.
ITU-T G. The zero water peak the E-Band (1383-1480nm) allows use CWDM technology over the full range wavelength.D
typ.652
The singlemode fibre G. 0,34 dB/km max.652.652.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).652. The geometrical, optical and mechanical performance corresponds the relevant international standards.D
Communication technology
Coating
Cladding
Core
PMD frequency scale fibre G.652. 0,22 dB/km max
