<P> Cables can sometimes be distinguished by jacket color: for 62.5 / 125 μm (OM1) and 50 / 125 μm (OM2), orange jackets are recommended, while aqua is recommended for 50 / 125 μm "laser optimized" OM3 and OM4 fiber . Some fiber vendors use violet for "OM4 +". OM5 is officially colored lime green . </P> <P> VCSEL power profiles, along with variations in fiber uniformity, can cause modal dispersion which is measured by differential modal delay (DMD). Modal dispersion is caused by the different speeds of the individual modes in a light pulse . The net effect causes the light pulse to spread over distance, introducing intersymbol interference . The greater the length, the greater the modal dispersion . To combat modal dispersion, LOMMF is manufactured in a way that eliminates variations in the fiber which could affect the speed that a light pulse can travel . The refractive index profile is enhanced for VCSEL transmission and to prevent pulse spreading . As a result, the fibers maintain signal integrity over longer distances, thereby maximizing the bandwidth . </P> <Table> Minimum reach of Ethernet variants over multi-mode fiber <Tr> <Th> </Th> <Th> Minimum modal bandwidth 850 / 953 / 1300 nm </Th> <Th> Fast Ethernet 100BASE - FX </Th> <Th> 1 Gb (1000 Mb) Ethernet 1000BASE - SX </Th> <Th> 1 Gb (1000 Mb) Ethernet 1000BASE - LX </Th> <Th> 10 Gb Ethernet 10GBASE - SR </Th> <Th> 40 Gb Ethernet <P> 40GBASE - SWDM4 </P> </Th> <Th> 40 Gb Ethernet 40GBASE - SR4 </Th> <Th> 100 Gb Ethernet 100GBASE - SR10 </Th> </Tr> <Tr> <Td> FDDI (62.5 / 125) </Td> <Td> 160 /--/ 500 MHz km </Td> <Td> 2000 m </Td> <Td> 220 m </Td> <Td> 550 m (mode - conditioning patch cord required) </Td> <Td> 26 m </Td> <Td> Not Supported </Td> <Td> Not supported </Td> <Td> Not supported </Td> </Tr> <Tr> <Td> OM1 (62.5 / 125) </Td> <Td> 200 /--/ 500 MHz km </Td> <Td> 275 m </Td> <Td> 33 m </Td> <Td> Not Supported </Td> <Td> Not supported </Td> <Td> Not supported </Td> </Tr> <Tr> <Td> OM2 (50 / 125) </Td> <Td> 500 /--/ 500 MHz km </Td> <Td> 550 m </Td> <Td> 82 m </Td> <Td> Not Supported </Td> <Td> Not supported </Td> <Td> Not supported </Td> </Tr> <Tr> <Td> OM3 (50 / 125) * Laser Optimized * </Td> <Td> 1500 /--/ 500 MHz km </Td> <Td> 550 m (no mode - conditioning patch cord should be used) </Td> <Td> 300 m </Td> <Td> 240m <P> Duplex LC </P> </Td> <Td> 100 m <P> (330 m QSFP+ eSR4) </P> </Td> <Td> 100 m </Td> </Tr> <Tr> <Td> OM4 (50 / 125) * Laser Optimized * </Td> <Td> 3500 /--/ 500 MHz km </Td> <Td> 400 m </Td> <Td> 350m <P> Duplex LC </P> </Td> <Td> 150 m <P> (550 m QSFP+ eSR4) </P> </Td> <Td> 150 m </Td> </Tr> <Tr> <Td> OM5 (50 / 125) "Wideband multi-mode" for short - wave WDM </Td> <Td> 3500 / 1850 / 500 MHz km </Td> </Tr> </Table> <Tr> <Th> </Th> <Th> Minimum modal bandwidth 850 / 953 / 1300 nm </Th> <Th> Fast Ethernet 100BASE - FX </Th> <Th> 1 Gb (1000 Mb) Ethernet 1000BASE - SX </Th> <Th> 1 Gb (1000 Mb) Ethernet 1000BASE - LX </Th> <Th> 10 Gb Ethernet 10GBASE - SR </Th> <Th> 40 Gb Ethernet <P> 40GBASE - SWDM4 </P> </Th> <Th> 40 Gb Ethernet 40GBASE - SR4 </Th> <Th> 100 Gb Ethernet 100GBASE - SR10 </Th> </Tr>

What is the difference between om2 and om3 fibre
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