652. 0,36 dB/km typ. Singlemode fibre G. The zero water peak the E-Band (1383-1480nm) allows use CWDM technology over the full range wavelength.652
The singlemode fibre G. 0,25 dB/km typ.D used from Dätwyler have very low PMD value which much lower than the standard request.C
≤ 0,4 dB/km 0,4 dB/km
ITU-T G.652.B
≤ 0,4 dB/km
ITU-T G.652 standard specifying the singlemode fibre into categories.D
Communication technology
Coating
Cladding
Core
PMD frequency scale fibre G. 0,34 dB/km max.A Singlemode G.D
O-band
1300
E-band
1400
S-band
1500
C-band
L-band
1600
Systems
Wavelength [nm]
Fibre standards according ITU-T G.0
Singlemode G.D optimised for highest data rate transmission 1310nm 1625 nm. 0,05 dB/√km max.652.6
Typical channel space for CWDM-systems: 20nm
Fibre optic
Fibre
1270 (nm)
1610 (nm)
Attenuation [db/km]
0. The geometrical, optical and mechanical performance corresponds the relevant international standards. 0,36 dB/km typ.652.D
typ.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).5 0.7 0.652. 0,34 dB/km max.1 0.652.652.652. 0,24 dB/km typ. 0,22 dB/km max. 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.652.3 0.652. 0,24 dB/km max.8 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.D
≤ 0,4 0,4 dB/km 0,3 dB/km 0,4 dB/km 0,2 ps/√km
Dätwyler G.A
Accessories
ITU-T G.2 0.4 0.
ITU-T G.
0.652.652
ITU-T G.
.Singlemode fibre
according G
