SFP 850nm - 550m MM vs SFP 1310nm MM - 2km

[rodrigues1]

Hi everyone.

Hope this message finds you well.

I would like to ask some help please to clear up a doubt. With multimode fiber, is it possible to connect an SFP MM 1,25 Gbps - 1310nm - 2km with an SFP MM 1,25 Gbps - 850nm - 550m in some way? Or is it mandatory that the wavelenght should always also match on both ends?

Thanks in advance.

[Leo Laohoo]

2kms length Multi-Mode fibre?  

I can guarantee that is not going to work.  

[Joseph W. Doherty]

Wavelength needs to match.