10G over OM1 Fiber

[Tim Glen]

Hi,

Is there anyone here that is using the 10G LRM SFPs?

My org has a lot of OM1 fiber and is looking to migrate to a 10G solution over this cabling. 

I've recently rented a Fluke Versiv2 cable tester and tested the OM1. The cabling passes the test on the Fluke.  Cable lengths are all shorter than the 220m requirements.  I'd be using these mode conditioning patch cables. 

https://www.lanshack.com/LC-equip-to-ST-Mode-Conditioning-Cable-C43.aspx

I'm just concerned about attempting to run 10Gb over fiber that was designed for 100 Mb FDDI cable. 

Is my concern unwarranted?   Have people seen this solution work?   What should I look out for?

Thanks very much!

Tim

[balaji.bandi]

Look at the distance  for OM1

https://en.wikipedia.org/wiki/Multi-mode_optical_fiber

[Tim Glen]

Hi,

Thank you for the reply but there is no discussion of LRM optics in this document or in this chart so I don't believe it is relevant.  

https://en.wikipedia.org/wiki/Multi-mode_optical_fiber#Comparison

If you believe I am missing something please let me know.

Thank you

Tim

[Leo Laohoo]

The only time I've used LRM optics is on an OS2 run.

[Tim Glen]

Hi Leo

What is OS2,  do you mean OM2?

i found this document which helped a bit but I’m also still a bit concerned about the solution because I don’t hear from anyone who has used it.

https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/prod_white_paper0900aecd806b8bcb.html

Thank you

Tim

[Leo Laohoo]

---

@Tim Glen wrote:

What is OS2,  do you mean OM2?

---

OM means "optical multi-mode".  

OS means "optical SINGLE-mode".