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1 Gbps, 2,5Gbps and 10Gbps long distance on OM1 62.5/125µm multimode fiber. Experience?

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Pello

New Around Here
After some research I found that the normal length limitations of OM1 optic fiber have been extended quite a bit. The OM1 62.5/125 multimode limitations have been extended from 275 meter up to 2km on 1Gbps and from 33m up to 300 meters on 10Gbps. Or more...?

Do people here have experience with adapters that extends the length almost 10 times from original specifications? What is the longest 1Gbps and 10Gbps over OM1 fiber people got? Have anyone been able to get 2km for 1Gbps and 300m for 10Gbps stable? What equipment was used?


Below is a list of parts I found.

1 Gbps SFP modules
Here are some modules I found. Most are not specific. Only one I found says support 2km on OM1. All of them is 1310 nm.

OM1 - 2km
Transition Networks TN-SFP-ESX6 Gigabit Extended MM SFP 1000Base-SX 1300nm Mmlc 2km 62.5micron (TN-SFP-ESX6)

Only mentions MMF multimode
SFP 1000BASE-SX+ 1310nm LC MMF DDM 2km (Model: LO-SF-1G-SX31)

Only mentions OM2 50/125µm multi-mode
Generic Compatible 1000BASE-LXL SFP Multimode 1310nm 2km Transceiver (OSP1250-312xCR)

62,5µm MMF/OM1 1km - 50/125µm/OM2 2km 50/125µm
D-Link SFP-SX-MM-2K comp. 1G Multimode 1310nm 2km SFP (F24-DL-SFP-SX-MM-2K)

50/125μm or 62.5/125μm Multi-mode - "Max 2km"
SFP: 1000BASE-SX Gigabit Ethernet Multi-mode Fiber Extended Temperature (SFP-M-2KM-G-W)

1km on OM1, 2km on OM2
HP SFP-SX-MM-2K comp. 1G Multimode 1310nm 2km SFP (F24-HP-SFP-SX-MM-2K)

Only melons SMF/MMF but not what multimode version.
Generic Compatible 1000BASE-SX SFP 1310nm 2km DOM Duplex LC/UPC SMF/MMF Optical Transceiver Module Hot (SFP1G-SX-31)


2.5 Gbps SFP modules
There is also few 2.5Gbps SFP modules. I thought they would support longer distance than 10GBase-LRM modules but specifications says no. All is 850nm.

Only mentions MMF ... Up to 300 meter.
Generic Compatible 2.5GBASE-SX SFP 850nm 300m DOM Duplex LC/UPC MMF Optical Transceiver Module (SFP2.5G-SX-85)

Up to 300m on 50/125µm MMF
Optcore 2.5G Multi-mode 850nm 300m SR SFP Transceiver (OSP2488-8503DCR)

300m transmission with 50/125μm MMF
Multi-rate 2.67G multi-mode SFP 850nm, 300m, 155M to 2.67G

Over OM1 170 meter, OM2 200m, OM3 550m, OM4 500m, OM5 ?
SFP-2.5G Series - 1-port 2.5 Gigabit Ethernet SFP modules


10 Gbps SFP modules
For 10Gbps the 10GBase-LRM (Long Range Mode) standard at 1310nm officially extends to 220 meter or 720 ft. 10GBase-LRM over OM1 and OM2 multimode apparently needs a "mode conditioning patch cord" to work. All is 1310nm except Ubiquiti that is 850nm..

OM1, 220 meter
LRM 220m over OM1 multi-mode 10G rate SFP+ 1310nm (SFP-1000-LRM)

300meter / 984.3' (850nm) but dont say what MMF
Ubiquiti Unifi 10G Multi-Mode Optical Module (UACC-OM-MM-10G-D)

220m @ OM3 MMF, 300m over SMF
On Reddit someone said they run over 200 meter on FDDI fiber (Older then OM1) with this SFP module

All 10Gbps FS modules
220 meter (850nm) and 300 meter (1310nm). But mentions OM3 and&or OM4

220 meter max over OM2
Multi-Vendor MSA Compatible 10G-SFP-220 SFP+ Module (10G-SFP-220)

ipolex - 10GB LRM - OM1, OM2, OM3 - 1310nm up to 220m

iploex - 10Gbe SR - OM1, OM2, OM3, OM4 - 850nm 300m


Mode conditioning patch cord
Information about these cables
The cables


Interesting 10Gbps length test
 
62.5nm is a very old standard multi-mode fiber standard. They were switching to 50nm 35 years ago. I worked with a lot of fiber back then. They had long range and short range back then.
 

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