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Beginner

Fiber Single Mode VS Multi Mode

                   Hi,

Any idea if there is a technical difference between the two types of Fiber in regards to the bandwidth? we will have a services running through out the building (240 m high),

Both single and multi mode are giving the same bandwidth? 1 G or 10 G??

Thanks

M

5 REPLIES 5
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Hall of Fame Community Legend

Single mode is for long reach and multi-mode is for short reach.

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Thanks Leo, i'm aware of the distance difference,

I'm concerning more about the bandwidth, is both types are using the same capacity? i.e we can get 10 GB speed from both types?

is the number of cores are the same in both? there will be a lot of services apps will be running over the link so I want to make sure,

WHICH WILL HANDLE MORE BANDWIDTH AND SPEED?

Thanks

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Hall of Fame Community Legend

Fibre optic, whether it's single-mode or multi-mode, can handle speeds of 100 Mbps, 1-, 10-, 40- and 100 Gbps.  I haven't even touched SAN speed.

The main thing to consider are the following:

1.  Use the same type of patch cord.  You don't use SM in one end and MM in the other.

2.  Use the same speed of module.  You don't have 100BaseFx in one end and 1 Gbps module in the other and hope that the 1 Gbps can "auto negotiate".  Not going to happen.

3.  It doesn't matter if you use different terminating ends:  SC, LC, ST.  They are just the ends and don't have any implications to speed.

4.  OM1, OM2, OM3 and OM4.  It DOES make a difference.

Comparison

Transmission Standards100 Mb Ethernet1 Gb (1000 Mb) Ethernet10 Gb Ethernet40 Gb Ethernet100 Gb Ethernet
OM1 (62.5/125)up to 2000 meters (FX)[9]275 meters (SX)[9]33 meters (SR)[9]Not supportedNot supported
OM2 (50/125)up to 2000 meters (FX)[9]550 meters (SX)[2]82 meters (SR)[2]Not supportedNot supported
OM3 (50/125)up to 2000 meters (FX)550 meters (SX)300 meters (SR)[9]100 meters[2]100 meters[2]
OM4 (50/125)up to 2000 meters (FX)1000 meters (SX)[2]550 meters (SR)[2]150 meters[2]150 meters[2]

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So you mean the above comparison is applied for single mode also? is there OM1,OM2,OM3 and OM4 in single mode?

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Hall of Fame Community Legend

Above table is for Multi-Mode.