132
3 Optical Signal Attenuation and Dispersion
Table 3.2 Recommendations for fibers used in telecom, access, and enterprise networks
ITU-T Rec. No.
Title and Description
G.651.1 (Edition 2; Nov. 2018) Title: Characteristics of a 50/125 μm multimode graded index
optical fiber cable for the optical access network
Description: Requirements of a silica 50/125 μm multimode
graded index fiber cable for the 850 nm or 1300 nm regions
G.652 (Edition 9, Nov. 2016)
Title: Characteristics of a Single-Mode Optical Fiber and Cable
Description: Discusses single-mode fiber optimized for O-band
(1310 nm) use, but which also can be used in the 1550 nm
region
G.653 (Edition 7, July 2010)
Title: Dispersion-Shifted Single-Mode Optical Fiber and Cable
Description: Discusses single-mode optical fiber with the
zero-dispersion wavelength shifted into the 1550 nm region.
Describes chromatic dispersion for the 1460–1625 nm range
for CWDM
G.654 (Version E, Mar. 2020) Title: Cut-Off Shifted Single-Mode Optical Fiber and Cable
Description: Undersea single-mode optical fiber applications
with a zero-dispersion wavelength around 1300 nm
G.655 (Edition 5, Nov. 2009)
Title: Characteristics of a Non-Zero Dispersion-Shifted
Single-Mode Optical Fiber and Cable
Description: For applications in long-haul links; describes
single-mode optical fiber with chromatic dispersion greater
than zero throughout the 1530–1565 nm wavelength range
G.656 (Edition 3, July 2010)
Title: Characteristics of a Fiber and Cable with Non-Zero
Dispersion for Wideband Optical Transport
Description: Low chromatic dispersion fiber for expanded
WDM applications in the wavelength region between 1460 and
1625 nm
G.657 (Edition 4, Nov. 2016)
Title: Characteristics of a bending loss insensitive single mode
optical fiber and cable for the access network
Description: Addresses use of single-mode fiber for broadband
access networks; includes bending conditions for in-building
use
3.4.1 Recommendation G.651.1
The economic demand for low-cost installations of high-speed short-distance optical
fiber links created an extensive market for multimode fibers. These links use moderately priced light sources that operate in either the short-wavelength region (770–
860 nm) or in the O-band (around 1310 nm). Applications include links in locations
such as an office or government building, a medical facility, a university campus, or
a manufacturing plant, where the desired transmission distance is typically 2 km or
less.
Recommendation G.651.1 gives the requirements of a 50/125 μm multimode
graded-index silica-optical-fiber cable for use in the 850 nm or 1300 nm regions.
3 Optical Signal Attenuation and Dispersion
Table 3.2 Recommendations for fibers used in telecom, access, and enterprise networks
ITU-T Rec. No.
Title and Description
G.651.1 (Edition 2; Nov. 2018) Title: Characteristics of a 50/125 μm multimode graded index
optical fiber cable for the optical access network
Description: Requirements of a silica 50/125 μm multimode
graded index fiber cable for the 850 nm or 1300 nm regions
G.652 (Edition 9, Nov. 2016)
Title: Characteristics of a Single-Mode Optical Fiber and Cable
Description: Discusses single-mode fiber optimized for O-band
(1310 nm) use, but which also can be used in the 1550 nm
region
G.653 (Edition 7, July 2010)
Title: Dispersion-Shifted Single-Mode Optical Fiber and Cable
Description: Discusses single-mode optical fiber with the
zero-dispersion wavelength shifted into the 1550 nm region.
Describes chromatic dispersion for the 1460–1625 nm range
for CWDM
G.654 (Version E, Mar. 2020) Title: Cut-Off Shifted Single-Mode Optical Fiber and Cable
Description: Undersea single-mode optical fiber applications
with a zero-dispersion wavelength around 1300 nm
G.655 (Edition 5, Nov. 2009)
Title: Characteristics of a Non-Zero Dispersion-Shifted
Single-Mode Optical Fiber and Cable
Description: For applications in long-haul links; describes
single-mode optical fiber with chromatic dispersion greater
than zero throughout the 1530–1565 nm wavelength range
G.656 (Edition 3, July 2010)
Title: Characteristics of a Fiber and Cable with Non-Zero
Dispersion for Wideband Optical Transport
Description: Low chromatic dispersion fiber for expanded
WDM applications in the wavelength region between 1460 and
1625 nm
G.657 (Edition 4, Nov. 2016)
Title: Characteristics of a bending loss insensitive single mode
optical fiber and cable for the access network
Description: Addresses use of single-mode fiber for broadband
access networks; includes bending conditions for in-building
use
3.4.1 Recommendation G.651.1
The economic demand for low-cost installations of high-speed short-distance optical
fiber links created an extensive market for multimode fibers. These links use moderately priced light sources that operate in either the short-wavelength region (770–
860 nm) or in the O-band (around 1310 nm). Applications include links in locations
such as an office or government building, a medical facility, a university campus, or
a manufacturing plant, where the desired transmission distance is typically 2 km or
less.
Recommendation G.651.1 gives the requirements of a 50/125 μm multimode
graded-index silica-optical-fiber cable for use in the 850 nm or 1300 nm regions.