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LGB1108A Quick Start Guide
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Chapter 9: Cabling
Fiber Standards
The International Telecommunication Union (ITU-T) has standardized various fiber types for data networks. These are summarized
in the following table:
Table 9-3: Fiber standards.
ITU-T Standard
Description
Application
G.651
Multimode fiber 50/125-micron core
Short-reach connections in the 1300- nm or 850-nm
band.
G.652
Non-dispersion-shifted fiber single-mode,
9/125-micron core
Longer spans and extended reach. Optimized for
operation in the 1310-nm band. but can also be used in
the 1550-nm band.
G.652.C
Low water peak non-dispersion-shifted fiber
single-mode, 9/125-micron core
Longer spans and extended reach. Optimized for
wavelength-division multiplexing (WDM) transmission
across wavelengths from 1285 to 1625 nm. The zero
dispersion wavelength is in the 1310-nm region.
G.653
Dispersion-shifted fiber single-mode,
9/125-micron core
Longer spans and extended reach. Optimized for
operation in the region from 1500 to 1600 nm.
G.654
1550-nm loss-minimized fiber single-mode,
9/125-micron core
Extended long-haul applications. Optimized for high-
power transmission in the 1500- to 1600-nm region,
with low loss in the 1550-nm band.
G.655
Non-zero dispersion-shifted fiber single-mode,
9/125-micron core
Extended long-haul applications. Optimized for high-
power dense wavelength-division multiplexing (DWDM)
operation in the region from 1500 to 1600-nm.