HPE X130 10G SFP+ LC LH80, Руководство пользователя, Страница: 7 / 63

3
Interface type Central wavelength (n m) Fiber grade Transmission distance
OM2 < 550 m (1804.46 ft)
10GBASE-SR 850
OM1 < 33 m (108.27 ft)
OM2 < 82 m (269.03 ft)
OM3 < 300 m (984.25 ft)
OM4 < 450m (1476.38 ft)
10GBASE-LRM 1310
OM1 < 220 m (721.78 ft)
OM2 < 220 m (721.78 ft)
OM3 < 220 m (721.78 ft)
OM4 < 220 m (721.78 ft)
•
Single-mode fibers
Single-mode fibers (SMFs) have a small core size (typically 9
μm or 10 μm ) and can transmit
light in only one mode. Single-mode fibers suffer little intermodal dispersion and are suitable
for long-haul communication. Single-mode fibers transmit light at the central wavelength of
1310 nm or 1550 nm.
Telecommunication Industries Alliance (TIA)/Electronic Industries Alliance (EIA) defines that
single-mode fibers use yellow outer jackets with an "SM" mark.
ITU defines single-mode fiber types in its G series standards. The most commonly used
single-mode fibers are defined in ITU G.652 and G.655 standards. Table 3 describes features
of the G.652 and G.655-compliant fibers.
Table 3 Features of G.652 and G.655-compliant fibers
Single-mode fiber type Wavelength (n m) Features Applications
G.652-compliant fiber
(standard single-mode
fiber)
• 1260 to 1360
• 1530 to 1565
Zero dispersion at
1310 nm.
Connecting transceiver
modules with a central
wavelength of 1310 nm
or 1550 nm.
G.655-compliant fiber
(non-zero dispersion
shifted fiber)
1530 to 1565
Near-zero dispersion
around 1550 nm.
1550-nm wavelength-
division multiplexing
(WDM) transmissions.
Fiber diameter
Fiber diameter is expressed as core diameter/cladding diameter, in μ m. For example, 9/125 μ m
represents a fiber core diameter of 9 μ m and a fiber cladding diameter of 125 μ m.
As a best practice, use the following fiber diameters for the HPE Comware-based devices:
•
G.652 standard single-mode fiber
— 9/125 μ m.
• G.655 single-mode fiber — 9/125 μ m.
•
G.651 standard multimode fiber — 50/125 μ m or 62.5/125 μ m.
LC connector
CAUTION:
Cover the connector with a dust cap when it is not connected to optical fibers.