Cisco 10GBASE-SR SFP Module SFP-10G-SR-S supports a link length of 26 meters on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber (MMF).
The DEM-310GT is a high performance 1310nm single mode SFP (mini-GBIC) transceiver. Supporting full duplex, Gigabit speeds on single mode fiber for distances of up to 10km on 9µm respectively