Newer deployments often use 50/125 µm Laser-Optimized Multi-Mode Fiber (LOMMF/OM3). Fibers that meet this designation provide sufficient bandwidth to support 10G ethernet up to 300 meters. Optical fiber manufacturers have greatly refined their manufacturing process since that standard was issued and cables can be made that support 10G up to 400 meters. Laser-Optimized Multi-Mode Fiber (LOMMF) is designed for use with 850 nm VCSELs (Vertical-Cavity Surface Emitting Laser). The migration to LOMMF/OM3 has occurred as users upgrade to higher speed networks. LEDs have a maximum modulation rate of 622 Mbit/s because they cannot be turned on/off fast enough to support higher bandwidth applications. VCSELs are capable of modulation over 10Gs and are used in many high-speed networks. ICC currently not offering OM4
| Category | Diameter | Jacket Colors | Optical Source | Bandwidth | 10G |
|---|---|---|---|---|---|
| OM1 | 62.5/125 µm | Orange | LED | 200MHz*km | 33m |
| OM2 | 50/125 µm | Orange | LED | 500MHz*km | 82m |
| OM3 | 50/125 µm | Aqua | VCSEL | 2000MHz*km | 300m |
| OM4 | 50/125 µm | Aqua | VCSEL | 4700MHz*km | 400m |