HPE SFP28, Manual

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Table 4: Multimode fiber specifications
Interface types Central wavelength
(nm)
Fiber grade Transmission distance
1000BASE-SX 850 OM1 < 275 m (902.23 ft)
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 < 400m (1312.34 ft)
10GBASE-LRM
1
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)
SMF <300m (987.25 ft)
1
LRM technology requires a PHY behind the SFP port. Not all 10G SFP (or higher) can support the use of a 10G LRM
transceiver. Check the compatibility chart for your switch series to see if 10G LRM is supported.
• 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.
Table 5: Features of G.652- and G.655-compliant fibers
Single-mode fiber
type
Wavelength (nm) 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
For 1550 nm wavelength-
division multiplexing (WDM)
transmissions.
Chapter 1 Overview 9