Range using single-mode SFPs across multi-mode fiber

Justin M. Streiner streiner at cluebyfour.org
Thu Dec 15 13:53:18 UTC 2011

On Wed, 14 Dec 2011, Keegan Holley wrote:

> 2011/12/14 oliver rothschild <orothschild at gmail.com>
> How did you end up with a MM run this long?  SX optics are only rated at
> 500 meters at best.  Even with mode conditioning jumpers more the 1km is a
> risk.  I'm glad it held up during testing though.  Just out of curiosity
> did you purchase dark from a provider?  Is it inside of a building?

Legacy 10baseFL/100baseFX/FDDI can run fairly long distances over OM1. 
In the past I've run 100baseFX over OM1 runs with multiple cross-connects, 
out to about 2 km.


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