HPE Aruba QSFP28 Manual page 8

Table 3: Multimode fiber grades
Fiber mode
Multimode fiber
Other factors that influence the transmission distance of multimode fibers include interface type, central
wavelength, and fiber grade. The modal bandwidth values shown above are for the fiber grades listed. There
are multimode fibers that have different modal bandwidth characteristics and do not necessarily match the
OM1 - OM4 grades.
Table 4: Multimode fiber specifications
Interface types
1000BASE-SX
10GBASE-SR
10GBASE-LRM
• 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 the mark "SM".
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. The following table describes features of the G.652 and G.655-
compliant fibers.
8
Fiber grade
OM1
OM2
OM3
OM4
Central wavelength
(nm)
850
850
1310
Fiber diameter (μm)
62.5/125
50/125
50/125
50/125
Fiber grade
OM1
OM2
OM1
OM2
OM3
OM4
OM1
OM2
OM3
OM4
SMF
ArubaOS-Switch and ArubaOS-CX Transceiver Guide
Modal bandwidth at 850 nm
(MHz*km)
200
500
2000
4700
Transmission distance
< 275 m (902.23 ft)
< 550 m (1804.46 ft)
< 33 m (108.27 ft)
< 82 m (269.03 ft)
< 300 m (984.25 ft)
< 400m (1312.34 ft)
< 220 m (721.78 ft)
< 220 m (721.78 ft)
< 220 m (721.78 ft)
< 220 m (721.78 ft)
<300m (987.25 ft)