10GBASE-SR Application Overview


10GBASE‑SR: 10 Gb/s serial transmission at 850 nm over 2 multimode optical fibers, with reach up to at least 300 m

10GBASE‑SR supports short wavelength serial transmission over duplex (2‑fiber) multimode optical fiber cabling. The application’s nominal symbol rate is 10.3125 GBd per lane and the supported distance varies according to the type of multimode cable used. Network equipment interface connections include duplex optical fiber connectors and standard sockets into which physical (PHY) layer transceiver modules may be plugged.

  • Connector type: SC, LC
  • Transceiver module: SFP+, XENPAK, X2, XFP
  • Defined in clause 52 of the IEEE 802.3 Standard for Ethernet
  • Initially published as IEEE Std 802.3ae™: Media Access Control Parameters, Physical Layers and Management Parameters for 10 Gb/s Operation in 2002

Optical Fiber Cabling (Channel) Characteristics:

Parameter OM3 OM4 OM5 Unit
Operating wavelength: 850 nm
Modal bandwidth (min): 2,000 4,700 MHz∙km
Operating range: 2 to 300 2 to 400 m
Insertion loss (max): 2.6 2.9 dB

Key Application Capabilities:

  • Defines a 10 Gb/s PHY for operation over at least 300 m of MMF
  • Supports full-duplex operation only
  • Preserves the Ethernet frame format utilizing the Ethernet MAC
  • Preserves minimum and maximum FrameSize of current 802.3 Standard for Ethernet

Related Applications:

The IEEE P802.3ae Task Force also specified the following 10 Gb/s Ethernet applications:

Application    Operating    Wavelength Media Operating Range1
10GBASE-ER 1550 nm Single-mode up to 40 km4
10GBASE-LR 1310 nm Single-mode up to 10 km
10GBASE-LX4 four WDM2 Multi-mode3 up to 300 m
10GBASE-LX4 four WDM2 Single-mode up to 10 km
1 Supported distance varies according to the type of optical fiber cable used.
2 1275.7 nm, 1300.2 nm, 1324.7 nm, and 1349.2 nm
3 Use of mode conditioning launch cords is not required for OM3, OM4, or OM5.
4 Links longer than 30 km for the same link power budget are considered engineered links and must not exceed specified insertion loss.

Back to TIA FOTC IEEE 802.3 Multimode Optical Fiber Ethernet Standards Explorer