3Com Router 5000 and Router 6000 v2.41Module Guide Chapter 4 Flexible Interface Cards (Router 6000)4-4Note:Depending on how light travels, optical fibers are divided into multi-mode optical fiber and single-modeoptical fiber.Single-mode optical fiber has very thin core, and transmits only in single mode on agiven wavelength. It features wide band and large transmission capacity.Multi-mode optical fiber allows transmission in multiple modes on a given wavelength.In multi-mode, lights in different modes travel at different speeds, resulting in phasedistortion and thus limiting the transmission band. In terms of fiber core size, thereare two types of multi-mode optical fibers: 62.5 μm and 50 μm, the transmissionmedia accepted by the ISO/IEC 11801 standard.4.2.2 Interface AttributesThe following table describes the interface attributes of the Router 1-Port 100FX MMFIC/100FX SM FIC.Table 4-3 Router 1-Port 100FX MM FIC/100FX SM FIC interface attributesDescriptionAttribute100FX SM 100FX MMConnector SCNumber of connectors 1Optical fiber mode Single-mode Multi-modeMax. transmission segment 15 km (9.3 mi.) 2 km (1.2 mi.)Central wavelength 1310nm (1261 to 1360nm) 1315nm (1270 to 1360 nm)Min. -15 dBm -20 dBmOpticaltransmitterpower Max. -8 dBm -14 dBmMin. -31 dBm -31 dBmReceiversensitivity Max. -8 dBm -14 dBmOperating mode Full duplex100MbpsSupported frame format Ethernet_II
