Hello Guys,
So, i was reading some post on reddit and i got to know something about single mode fiber. Is it true that if i use single mode fiber (typically, with LR transceiver) but at a shorter distance, (instead of using Multimode) will the transceiver get burn due to laser?
I’m aware of the fact that for shorter distance, MM is preferred and for longer distances, SM is preferred. But i was curious and wanted to know whether i can use SM fiber for short distance using LR modules.
Thanks
You would need to verify that the power is within the specified operating limits for the modules in question. You can use an attenuator handle cases where you have equipment originally intended for longer distances, if you absolutely must.
Edit: I’ll add that it should be fine if we’re just talking LR here, but doesn’t hurt to doublecheck the actual numbers.
Okay, i understand but i’m asking in general.
In general LR is made such that it’s fine. This example supports 2m to 10km:
It depends on the power of the SFP+ module. There are attenuators available for this purpose:
It’s recommended to have a fiber power meter and the datasheets for the transceivers at hand. Otherwise just use MM and short range modules and save your time for more important things.
Short is not so short though. When they say this, I thin like 50’. I consider 300 meters pretty far. I realize it’s way shorter than single mode though.
I used multimode in my house. Cheaper and potentially faster as network capabilites change.
