Timeline for SFP-10G-LRM compatible with Single Mode Fiber?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 4, 2020 at 10:29 | comment | added | Zac67♦ | By IEEE standard, -LRM is only suited for MMF (see Clause 68.5 PMD to MDI optical specifications) - however, many actual products do support SMF, check their spec sheet. SMF will likely work anyway but the achievable reach can vary extremely, depending on the laser type and coupling method within the transceiver. | |
| Nov 26, 2019 at 16:35 | comment | added | A Culver | So If LRM is intended for MMF only, then it would be better to change all SMF to MMF then? | |
| Nov 25, 2019 at 22:09 | comment | added | Zac67♦ | Check IEEE 802.3 clause 68 - officially, LRM is intended for MMF only. Of course, it's possible to use it on "short" SMF runs as well. | |
| Nov 25, 2019 at 21:57 | comment | added | YLearn | @Zac67, it is the variation of LR that operates with both SM and MM. IIRC, the other 109G one that operates with both is LX4. Doesn't change the facts that just like any of the other "L" mediums that can operate on both, it has better range characteristics on SM and may require the use of line conditioning patch cords to operate properly on MM. | |
| Nov 25, 2019 at 21:52 | comment | added | Zac67♦ | The 'M' in -LRM stands for multi-mode - the L indicates Long wavelength (1300 nm). | |
| Nov 25, 2019 at 21:25 | history | answered | YLearn | CC BY-SA 4.0 |